Althoff Home Services Blog: Posts Tagged ‘Residential HVAC’

Why Is My Furnace Running but Not Blowing Hot Air?

Monday, October 29th, 2018

Your furnace clicks on and the blower motor is running, but the air coming from the vents is cold or cool instead of hot. Or maybe the air starts off hot, then turns cool before the furnace shuts down.

Let’s look at some of the solutions to this common furnace problem.

1. Check the air filter.

Has it been awhile since you changed your furnace air filter? If you use disposable air filters, we recommend checking them every month and changing them if they’re dirty.

A dirty air filter affects more than just your home’s air quality (though don’t get us wrong, that’s important). The humble air filter is at the root of many furnace problems.

A clogged, dirty air filter blocks the return air flow to the furnace, meaning:

  • There’s less air to blow out of your vents. This could account for your “cold air” feeling.
  • The furnace can overheat. The furnace is suffocating without enough air, so it has to work harder and run longer to heat your home. Imagine trying to run a marathon with a heavy cloth around your mouth and nose, and you’ll get the idea. Soot builds up on the heat exchanger over time, making it even less efficient. All this can easily cause the heat exchanger to overheat. Your furnace has safety controls that automatically shut down the burners in case of overheating. Though the hot air stops, cool or cold air will continue to blow for awhile in order to cool down the unit to safe level.

Try changing the air filter to see if this resolves your cold air problem. If that doesn’t help but you still suspect your furnace is overheating, it’s time to call in a professional HVAC technician. Repeated overheating will damage the heat exchanger and lead to a big repair bill.

2. Check the thermostat.

If you’re getting cool air instead of warm, the problem may not be your furnace at all. It may be an issue with the thermostat. Thermostats are fiddly things—plus, you never know who in the house might have done some “unauthorized adjustments.”

  • Make sure the thermostat is set to “heat” instead of “cool.” (Yes, this sounds obvious, but it’s been the cause of many a service call!)
  • If your thermostat has a fan setting, set it to “auto” instead of “on.” If it’s set to “on,” the blower fan may run continuously even when the furnace isn’t heating the air up to the set temperature.
  • Open the thermostat panel and gently blow out any dust or debris. A dirty thermostat can sometimes malfunction.
  • If your thermostat runs on batteries, try replacing them. Most thermostats run off your home’s central power with battery backup, but some run exclusively on battery power. Dying batteries can cause the thermostat to send incorrect temperature information to the furnace.
  • Ensure that the thermostat is firmly attached to the wall and none of the wires are loose or damaged.
  • Take note of the air temperature near the thermostat. A thermostat reads the temperature of the air immediately around it. Is the thermostat in a spot that is noticeably warmer than the rest of your house? The thermostat will apply that temperature to the rest of your home, which can lead to cooler air than you wanted as the thermostat tries to regulate the temperature.

If all of these things check out but you still suspect a malfunction, the thermostat may need recalibration or replacement.

3. For gas furnaces: Make sure the gas supply valve is on.

Have you had any repairs done lately? Someone may have shut off the gas supply valve to do a repair and then forgot to turn it back on. Without the gas supply, there’s nothing for your furnace to burn to create the heat. Check that the gas valve handle is inline (parallel) with the gas pipe—that means it’s on. When it’s off, the handle is perpendicular to the pipe.

If this doesn’t fix the problem, and you smell gas, turn off your gas supply and call a professional right away. Gas leaks are dangerous.

4. For gas furnaces: Check the pilot ignitor, flame sensor and/or pilot light.

Problems with your pilot light can cause your gas furnace to blow cold air.

Most modern gas furnaces have an electronic pilot igniter coupled with a flame sensor rather than a physical pilot light. These can malfunction—repairing or replacing them is a job for a professional HVAC technician.

A dirty or clogged pilot ignitor can prevent the furnace from igniting properly. While working with the ignitor is a job for a pro, you can check for a dirty ignitor if you know how and feel absolutely comfortable shutting off power to your furnace, taking off the front panel, and locating the ignitor.

If you have an older gas furnace with a standing (physical) pilot light, the light can go out. This is usually the result of the gas company shutting down the gas lines for maintenance or an emergency. Once you’ve confirmed that the gas line is safely back in operation (a quick call to the gas company is a good idea), try relighting the pilot light according to the instructions for your unit. If it won’t stay lit, call a professional. There may be a problem with the thermocouple or ignition system.

5. Consider the air ducts.

Is your furnace blowing hot air in some rooms but not in others? Does it seem like the airflow is weaker than you remember? Problems with your vents or ductwork are likely to blame.

Take a look at the air vents and make sure that the dampers (the little handles on the front panel) are parallel with the ductwork. This means that that dampers are fully open and allowing for maximum airflow from your furnace.

Still getting cool air from the vents? You may have leaking ducts. Cracks, holes and gaps in your ductwork allow the hot air from your furnace to escape before it reaches the vents. Not only will you have cold spots, but leaky ductwork will run up your energy bills and pull in dust and debris that then gets circulated into your home.

Over time, ducts can actually break due to the stress of fluctuating temperatures. Insulation can break down and fall into the duct space, clogging it. If a duct has collapsed or is severely obstructed, you’ll experience a reduction in airflow. Your furnace’s heat exchanger may overheat due to the lack of air, causing the burners to shut down.

If you suspect a problem with your ductwork, contact a professional who specializes in that area.

Furnace still not blowing hot air? Call in a professional.

A furnace problem won’t fix itself. Often the initial issue is simple to fix, but can lead to complicated and costly problems if put off too long.

If you’re in the Greater Chicago area, schedule your furnace service online or give us a call at (815) 455-7000. Our licensed Chicago HVAC technicians can diagnose the problem and get it resolved fast so you’re not left in the cold.

This information is provided as a general guideline. Althoff Industries does not assume any liability resulting from the provided information.

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Why Do You Need a Draft Check and Combustion Analysis?

Wednesday, October 17th, 2018

Gas fired appliances like furnaces, boilers and water heaters create gases as a byproduct of the combustion process. In order for these appliances to work safely, they must be vented properly and maintain a proper draft to make sure the gases exit your home. Gas leaks, high carbon monoxide levels, and improper drafting can all be dangerous if not addressed.

Gas fired appliances like furnaces, boilers and water heaters create gases as a byproduct of the combustion process. In order for these appliances to work safely, they must be vented properly and maintain a proper draft to make sure the gases exit your home. Gas leaks, high carbon monoxide levels, and improper drafting can all be dangerous if not addressed.

These gases are made up of oxygen, carbon monoxide and carbon dioxide. A safe burn is represented by having the correct mixture of these components. An improper mixture can mean poor performance of your system and worse a safety concern. Only by using a combustion analyzer can these be checked.

Draft and combustion should be checked every year to ensure the safe and efficient operation of your gas-fired appliances. Here’s why you should make sure your annual furnace maintenance includes these two elements.

What is a draft check and why is it important?

Draft is required to draw flue gases and carbon monoxide safely out of a living area. This is generally accomplished through a chimney or vent system.

This flue draft will occur naturally in properly installed appliances unless it is affected by some outside force. Outside forces can include an attic fan, kitchen fan, the removal of a vent cap during high winds, or even a birds nest or other animal intrusion into the chimney.

If the flue draft gets interrupted or is impeded, carbon monoxide can back up in the chimney, eventually leaking or “spilling” into the home through the draft hood.

Verifying draft and checking for spillage is an important safety consideration for your furnace. Using a draft gauge to measure draft pressure inside the flue can determine:

  • If the furnace has sufficient combustion air to operate properly
  • If the flue gases can flow freely out of the home

If improper draft is found, the cause should be remedied to protect your household from carbon monoxide and to ensure proper operation of the equipment.

What is a combustion analysis and why is it critical?

Your gas furnace is manufactured to repeatedly and automatically ignite its burners throughout the winter, maintaining a comfortable temperature in your home. To accomplish this safely and efficiently, the right amount of combustion gases must be present.

A combustion analyzer measures the amount of carbon monoxide, the amount of oxygen, and the temperature of the flue gas in your furnace. This information is important for the following reasons:

  • Safety. Levels of carbon monoxide outside of the manufacturer guidelines can be dangerous.
  • If there is an imbalance or abnormality in the measurements, it helps the technician zero in on the underlying problem. Some hidden problems are impossible to diagnose without a combustion analyzer.
  • It provides an accurate measure of the efficiency of your furnace.
  • It reveals issues related to over firing and under firing. Both cause poor performance and shortened lifespan of your equipment if not corrected.

See a draft gauge and combustion analyzer at work.

This video shows how the draft gauge and combustion analyzer work to ensure your home is safer and your furnace is operating efficiently.

https://youtu.be/MOUlOSIaLDM

Make sure your annual furnace tune-up includes a draft check and combustion analysis.

Not every HVAC company doing furnace maintenance includes a combustion analysis and draft check as part of their gas furnace tune-up package. These steps are too important to skip, so always make sure you ask if they’re included before booking.

If you’re in the Greater Chicago area, schedule your heating system tune-up with Althoff Industries. Every gas furnace tune-up we perform includes a draft check and combustion analysis. We do it because it’s the only reliable way to assure the efficient and safe operation of your gas furnace.

Contact us at (815) 455-7000 to schedule.

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Where are My Water and Gas Shut Off Valves?

Tuesday, August 14th, 2018

If you need to turn off your home’s gas or water due to a needed repair or a weather issue, first you have to know where the water and gas shut off valves are located. Ideally, you’ll want to locate the main or master shut offs, as well as the supply shut offs, before an emergency happens.

SAFETY NOTE: If you suspect a gas leak, do not try to turn off the gas to your home. Get outside, move away from the house, and then call the gas company.

If you have a water leak, your municipal water supplier may have an emergency number you can call to report it.

How to Find the Main Water Shut Off Valve

There are actually two main water cut off valves – one before the water line reaches the meter and the other on the “house side” of the water meter. These turn off the water supply to the entire home. In colder climates, both the meter and the shut off valves are located inside the house to prevent freezing. In warmer climates, the meter and the valves will either be outside the house or below ground, inside a box.

Turn off your home’s water supply: Turn the main shut off valve that’s on the house side, after the meter.

  • If it’s a lever, turn it so it’s at a right angle, or perpendicular, to the water supply line. To turn the water back on, turn the lever so it’s parallel, or in the same direction as, the supply line.
  • If the main shut off valve is a round handle like the ones on outdoor faucets, simply turn it clockwise to turn off the water (righty-tighty) and counter-clockwise to turn the water back on (lefty-loosey).

Note: You may notice two other valves outside your house, but they are only for use by the city workers. An underground curb stop valve is located between your home’s water meter and the water main in the street. There’s also a “corporation stop”, which is where the house water line and the water main meet.

How to Find the Water Supply Shut Off Valves

It’s not always necessary to shut off the main water supply. If you’re just repairing or replacing one fixture, like a faucet, you can turn off the water only to its individual supply line. Also called a supply stop, this shut off valve is usually a small metal oval or round handle located on the water line running to your toilets, water heater, dishwasher, faucets, washing machine and water softener

In some cases, you may find a t-shaped connector on the water supply line for your furnace humidifier or your refrigerator’s ice maker. Be sure to monitor these, as they’re a common source for leaks. Building codes in many areas require them to be replaced with supply stops to prevent water damage.

How to Find the Main Gas Shut Off Valve

If you have any natural gas appliances in your home, the main gas shut off valve that you’ll want to look for is usually inside, where the gas line enters the house. However, older homes may only have one shut off at the meter itself. In most cases, the meter shut off valve is only for use by the gas company, fire department or a plumbing or HVAC contractor.

When you shut off the main gas supply, keep in mind that you’ll have to relight the pilot lights in your gas appliances, unless they have an electronic ignition system. Relighting instructions can usually be found in the owner’s manual or on the appliance itself, but if you’re unsure or not comfortable with it, you can always call a professional like Althoff Industries to take care of it for you.

Turn off your home’s gas supply: The way to shut off the main gas valve depends on what type of setup your house has.

In newer homes, the gas shut off valve may look like a bright yellow lever on a black iron pipe where the gas supply line enters your house. To turn off the gas, just turn the lever perpendicular to the line, and then turn it parallel to the line to turn the gas back on.

If your home is newer and has a high-pressure gas system, the gas supply line will be a flexible copper pipe. The indoor main shut off valve can usually be found near your home’s furnace or water heater, just before the pressure regulator.

Homes that use propane will have a shut off valve on the tank as well as one on the gas line before the connection to the first appliance.

To turn off the gas in an older home that uses natural gas and doesn’t have an indoor shut off, you’ll have to use the street-side shut off valve outside on the gas meter. The valve typically looks like a small rectangle, but you’ll need a special wrench to open and close it. To turn off the gas, turn the valve perpendicular to the incoming gas line. Turn the valve parallel to the line to turn the gas back on. It may be a good idea to pick up a gas meter shut off wrench at your local home improvement store and then leave it attached to the meter in case you need it.

How to Find the Gas Supply Shut Off Valves

Every gas appliance has an individual shut off valve so you can repair or replace it without turning off the gas to your entire home. It’s typically a lever that you turn perpendicular to the line to shut off the gas; turning it parallel to the line will turn the gas back on.

The service, or supply, shut off valve for gas appliances should be located on the flexible supply line, called an appliance connector, no more than 6 feet from the appliance itself. The line may be visible for furnaces, gas fireplaces and water heaters, but gas dryers and stoves will need to be pulled away from the wall to get access to the shut off valve.

This information is provided as a general guideline. Althoff Industries does not assume any liability resulting from the provided information.

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Top 4 Reasons Your Air Conditioner Isn’t Working

Tuesday, July 3rd, 2018

Oh, fantastic. You’re sweltering on a hot day and no matter how low you set the thermostat, your air conditioning system just can’t seem to cool the house. Or maybe you feel warm-ish air coming out of the vents instead of nice cold air. What could be going on?

There are many possible reasons why your air conditioner isn’t working, but here are the four most likely ones.

1. Refrigerant leak

When most people think about their air conditioner, they think that cool air is being created. In actuality, the job of the air conditioning system is to collect heat from inside the home, move it outdoors and release it.

Have you ever driven past a construction site and seen a line of dump trucks carrying dirt away as they clear the land? One by one the trucks are loaded, filled and then driven away to be dumped at another location.

In the same way that a dump truck is used to haul dirt from one place to another, refrigerant is used in the air conditioning system as the container to move heat. Each pound of refrigerant is designed to carry a certain amount of heat outside and release it. A system that doesn’t have enough refrigerant will not be able to cool the house properly or at all.

Symptoms of low refrigerant are:

  • Blowing warm air
  • Poor performance (“I have my stat set at 70 and I can’t get the house below 75!”)
  • Icing on the refrigerant line

If you previously had enough refrigerant and now the level has dropped, there is a leak that must be addressed.

2. Failed capacitor

Your air conditioning unit requires more energy to start up than is available through your home’s wiring. A capacitor is added to the circuit to give the unit an electrical jumpstart. Your system contains several capacitors that help start the compressor, outdoor fan motor, and blower motor inside. The most common capacitor to fail is the compressor motor run capacitor.

Capacitor failure is very common but inexpensive and quick to repair. Since it is a very common repair, service technicians stock these on their trucks. Most capacitors fail simply due to age. The life expectancy can vary, but the typical rating is about 5-7 years.

3. Failed contactor

A contactor is a small device that controls the flow of electricity to your air conditioner’s components. Think of a contactor like a drawbridge. When the drawbridge is down, cars can drive freely over the bridge to the other side. When the bridge is up, cars have to wait until it is lowered again.

Contactors work in the same way but instead of controlling traffic, they control the flow of electricity. When your air conditioner is not in a cooling cycle, the contactors are in the “up” position blocking the flow of electricity. When the thermostat wants to start a cooling cycle, a small voltage is sent to the contactors that tells them to lower into the “down” position. Contactors will stay in the down position until the thermostat is satisfied.

Contactors typically fail due to age and normal wear and tear. Like the capacitors, failure on this component is very common but can be repaired quickly.

4. Lack of maintenance

Probably the most common reason for air conditioner failure is lack of maintenance. Like any piece of machinery, your furnace and air conditioning system requires maintenance.

Here are some common consequences of poor maintenance that can leave you without cold air or with a higher-than-normal cooling bill:

Plugged filters

As air from your home blows across the evaporator coil, heat is absorbed by refrigerant and delivered outside. If the filter is plugged and air flow is restricted, it will cause the coil to freeze and leave you without air conditioning.

dirty air filter

Plugged condensate drain lines

In addition to cooling, your air conditioner removes humidity from the air. This water is removed through a small drain pipe and deposited in a floor drain or outside. Left unmaintained, over time this drain can form a clog. The clogged drain can cause the excess water to backup and cause damage to your furnace or property.

Plugged condenser coils

Heat removed from the house is taken outside and released. If the outdoor coils are not maintained and kept clean, your system will be very inefficient. The unit’s inability to release heat will cause the system to run much longer and do a poor job of cooling the home.

Let the pros at Althoff take care of your AC system before there’s a problem.

If it’s been awhile since you’ve had your AC system checked out or maintained, do yourself a favor: Get it done before you’re left without cold air on a hot day. Our licensed Chicago HVAC technicians can take care of your AC tuneup or get you set up on a regular maintenance plan for peace of mind. If you’re experiencing a problem now, give us a call and we’re on it! Contact us at 800-225-2443 to schedule.

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The Difference Between Commercial and Residential HVAC Services for your Chicago Property

Wednesday, June 13th, 2018

Commercialv vs Residential HVAC Services for your Chicago Property

Do you know the differences between residential HVAC and commercial HVAC? Knowing the differences can help you choose the right contractor for your routine maintenance, repairs and HVAC replacements.

Residential HVAC

Residential HVAC contractors repair, replace and maintain central air conditioning and heating units on single-family homes. These units often contain an outdoor condenser that is located near an outside wall and is responsible for dissipating heat and an indoor unit that is responsible for filtering the air and pushing the cool air through the air ducts.

Commercial HVAC

Commercial HVAC units are much larger than residential HVAC units because they are needed to cool much larger spaces, and they must be repaired, maintained and installed by commercial HVAC contractors that are familiar with large systems. These units are typically located on rooftops, and depending on the size of the building, more than one rooftop unit may be installed. Unlike the residential HVAC system, the commercial rooftop unit is an all-in-one unit that contains everything needed to heat and cool the building. The only items located inside the commercial or large multi-story building are the air ducts and the thermostats.

The Primary Differences Between Commercial and Residential HVAC Units

There are three main differences between commercial and residential HVAC units, including the size of the units, the location and the expansion options.

1. Size and Power of the Unit

Commercial HVAC units are often much larger and much more powerful than their residential counterparts. This is because they must be able to heat, cool and dehumidify the occupied spaces of the building, which could range in size from 5,000 square feet to more than 100,000 square feet. By contrast, single-family residential homes average about 2,000 square feet, and their heating and cooling functions are often separate with the cooling functions being controlled by the central air conditioner and the heating functions controlled by a furnace or heat pump.

2. Location of the HVAC Unit

Because commercial HVAC units are so large, they are often located on rooftops to keep the bulky and oftentimes unsightly equipment out of view of the public. Rooftops also offer lots of room, which means multiple rooftop units can be easily connected together to add heating and cooling power. Residential HVAC units are rarely located on roofs. Instead, the inside parts of the unit are typically located inside an HVAC closet, and the outdoor unit is typically located near an exterior wall and connected to the interior unit via copper piping and electrical wiring.

3. Expansion Options

Residential HVAC units are not typically expandable. Instead, the residential HVAC technician chooses the right sized unit by calculated the occupied square feet, number of doors and windows and ceiling heights. Once the area to be cooled is known, the right sized unit can be purchased and installed. If expansions are performed on the house and additional cooling power is needed, the unit has to be replaced with a large HVAC system.

By contrast, commercial HVAC units are designed to be expandable. If the commercial building undergoes a renovation that increases the occupied square footage, additional rooftop units can be connected to the existing units in order to provide more heating and cooling power.

Residential and Commercial HVAC Services with Althoff

We are proud to be able to provide the entire city of Chicago and the surrounding communities with residential HVAC services and commercial HVAC services. Our residential and commercial heating and cooling technicians are experienced in repairing, replacing and maintaining all types of HVAC equipment from complex rooftop units located on multi-unit multi-story buildings to central units located outside single-family homes.

To talk to one of our HVAC technicians about replacing, repairing or maintaining your residential HVAC system, call us at 815-455-7000. To have your commercial HVAC system serviced, replaced or upgraded, call us at 800-225-2443.

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How to Keep Your Household Safe from Furnace Carbon Monoxide Poisoning

Monday, February 12th, 2018

Most of us view our homes as inanimate objects, constructed of wood, bricks, steel, glass, and roofing materials. Few look at our houses as a representation of who we are. Literally.

Take, for example, our home’s electrical system. It serves as the “nervous system” of our houses, providing the power it needs to function efficiently. A home’s plumbing serves much like our own and even our insulation qualities are similar. Have you ever given thought to the fact that your home’s HVAC system serves as the lungs of your home?

For the most part, in extremes of heat and cold, we rely on our heating and air conditioning to provide us with clean, refreshing air. There are those few months in Crystal Lake and NW Chicago that we can shut it all off and open our windows but for the most part, we rely on our HVAC “lungs” to provide us with comfortable, safe, clean air to breathe.

There is a potential problem that can occur, however, particularly in colder weather. It is the issue of a carbon monoxide leak. A furnace carbon monoxide leak is a serious issue that takes diligence to prevent and expert technicians to diagnose and resolve.

What is Carbon Monoxide?

Carbon monoxide is a colorless, odorless flammable gas that is created when the combustion of carbon is not completed. The biggest issue with carbon monoxide is that it is toxic, causing illness, brain damage and even death can occur.

How is Carbon Monoxide Produced?

Carbon monoxide is produced by anything that burns carbon as a fuel. This includes water heaters, fireplaces, charcoal grills, kerosene, gas heaters, wood stoves, and even clothes dryers. The more energy an appliance uses, the greater the risk of the carbon monoxide it can produce.

Why is it a Dangerous?

Carbon monoxide is dangerous because takes the place of oxygen in the bloodstream and prevents oxygen from getting to the heart, brain, and organs. When exposed to carbon monoxide in large amounts, humans can be overcome in just a matter of minutes. This can cause a person to lose consciousness and ultimately suffocate in a relatively short period of time.

How Can You Protect Yourself and Your Family?

The best way to prevent yourself and family from carbon monoxide poisoning may be through the installation of carbon monoxide detectors. This will serve as a last line of defense in the event carbon monoxide levels in your home are becoming dangerous. There are steps you can take, however, to minimize your home’s carbon monoxide levels so they never reach the point of becoming dangerous.

  • Schedule an annual tune-up or maintenance check on your furnace. Most carbon monoxide issues develop over time and can be discovered and addressed by an annual maintenance check on your furnace. Many carbon monoxide issues develop gradually and can be prevented by these maintenance checks.
  • Change air filters often. As inexpensive and easy to change as air filters are, many homeowners simply forget or fail to change their air filters often enough. This can prevent fresh air from entering your furnace.  It also increases the risk of carbon monoxide production.
  • Make sure your furnace was installed correctly. It doesn’t matter whether your furnace was installed 10, 20 or 30 years ago, there may have been errors made in its installation. Poor ductwork, venting or blower installation can create carbon monoxide problems. They also may be inhibiting your furnace from operating efficiently. Standards are higher today. To make sure carbon monoxide is not an issue with your system, contact a professional.

Few things may be as frightening as the thought of a furnace carbon monoxide leak. We rely on our furnaces as a source of warmth and comfort. If it has been more than a year since you’ve had a furnace check-up, cleaning or tune-up, we would encourage you to schedule one today. Of course, we would call us at Althoff Industries. For over 50 years we’ve been keeping families safe and comfortable in NW Chicago. We would be honored to assist you.

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3 Most Common Winter Furnace Repairs

Tuesday, February 6th, 2018

During winter’s blast, our furnaces work overtime to keep us comfortable without much regard to age or condition. Eventually, the weakest link in a heating system will fail, creating a need for a furnace repair. While your furnace may carry a decade or longer guarantee, some of the smaller, more susceptible parts, like those listed below, may fail prematurely.

Here are the most common furnace repairs our technicians encounter each winter.

1. Igniter Failure

Igniter failure is the single most common cause of gas furnace problems we see.

Furnace igniters replaced the pilot light systems that started gas furnaces in the past. If you remember “the pilot light going out” on your old gas furnace, you know that pilot lights were inefficient and often extinguished by drafts.

Rather than an actual standing flame, modern ignitors use electricity to heat small wires or filaments until they produce a spark to ignite the gas furnace. While igniters are safer and much more energy efficient than the old pilot lights, they’re still a common source of furnace issues.

Ignitors can malfunction with age, wear and tear. A dirty or clogged ignitor can prevent your gas furnace from igniting properly.

2. Issues With the Flame Sensor

The flame sensor is another part of the furnace ignition system that is prone to failure.

Older gas furnaces had a thermocouple, which could detect the heat put off by the pilot light. If the thermocouple determined there was no pilot light, it would prevent the flow of gas to the furnace for obvious safety reasons.

Modern furnaces use a flame sensor which, in essence, serves the same purpose. A flame sensor will prevent the flow of gas into your furnace if it detects there is no ignition source like a flame ignitor. The flame sensor must perform this task dozens if not hundreds of times per day throughout the cold weather months. Over time, the flame sensor can fail due to this great demand.

3. Problems With the High-Limit Switch

Have you noticed that your furnace will kick on minutes before warmer air begins to circulate throughout your home? This is the high-limit switch at work.

The high-limit switch has the important job of keeping the blower from powering air through your home until it’s heated sufficiently. Without a functioning high-limit switch, you’d be shivering in cold, unheated air!

This is another part of your furnace that is asked to perform thousands of times through the winter and will likely eventually fail.

When To Call An HVAC Professional

While it’s possible for experienced do-it-yourselfers to complete some of these common repairs on their own, we would caution against taking on such a task if you feel at all uncomfortable. Most modern furnaces combine electricity and gas to create combustion—two elements that require caution, know-how, and appropriate safety measures. When it comes to any furnace repair, the safety of you and your family is the primary concern.

If you’re in the Greater Chicago area, schedule your furnace service online or give us a call at (815) 455-7000. Our licensed Chicago HVAC technicians can diagnose your furnace problem and get it resolved fast so you’re not left in the cold.

This information is provided as a general guideline. Althoff Industries does not assume any liability resulting from the provided information.

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HVAC Installation Day: 6 Steps our Team Takes to Ensure Success

Wednesday, January 31st, 2018

HVAC installation day for your new HVAC system is an exciting time for our team at Althoff Industries. While we try to minimize any negative impact HVAC installation day may have on you and your family, we want you to know what to expect. We also hope that the day brings a certain excitement to you, knowing you will soon have a new, more efficient HVAC system providing a more comfortable indoor environment.

There are six general steps our team takes to help ensure the successful installation of your new equipment.

  1. Loading and preparation at our shop. Installation day starts with making sure we not only have your new HVAC equipment aboard our trucks but all the tools, testing equipment, and components to complete your installation properly, safely, and efficiently. This takes making sure we have everything we need loaded before we head to your NW Chicago suburb area home.
  2. Arrival and meeting of the installation team. Once our technicians arrive, they will introduce themselves and explain a bit about the installation process and what you can expect. They will determine the best place to park vehicles as to offer as little inconvenience to you as possible.
  3. Preparation for installation. Preparation for installation includes determining the easiest and simplest pathway to the installation site(s) and making sure any flooring is covered to prevent any potential damage. Once access is determined, the real work is ready to begin.
  4. Removal and disposal of old equipment. Before we can install your new equipment, we must remove the older equipment it will be replacing. This can sometimes be a relatively simple process but in some instances where very old equipment is involved, it can be a challenge. We will remove all of the old equipment and get it ready for disposal upon our departure.
  5. Installation of new equipment. Once the old equipment is removed, we will bring your new HVAC equipment into place and begin the installation process. Even after installation, our job is not done as the HVAC system must be carefully tested and checked for safe, smooth, and efficient operation. This is done through an initial start-up and thorough monitoring and testing using specific HVAC testing equipment to monitor gasses, combustion, and airflow.
  6. We’ll explain your equipment and its operation. Once our technicians are completely satisfied your new HVAC equipment has been properly and safely installed, they will explain the operation of your equipment to you and the routine maintenance you can perform to keep it running at peak efficiency.

You should begin enjoying the benefits of your new HVAC equipment quickly through better heating and cooling of your home and lower energy bills! Our goal is to leave your home as we found it, only better!

We’ve prepared a brief video of our team preparing for an install. Enjoy the show!

You can help us on HVAC installation day by removing any items that may be in the path while we take out or bring in your equipment. For the safety of any pets as well as our technicians, please keep any animals in a separate area during the installation process. If you have a cat or dog that is sensitive to noise or strangers, you may want to consider having a friend or relative take your pet during the installation period.

Keep in mind, the installation of a new HVAC system is a major project. It is likely the largest mechanical system in your home. There will be noise and technicians will be coming in and going out of your house frequently. While we do everything we can to minimize disruptions, it is an involved process.

Thanks for choosing Althoff Industries. If you ever have any questions about your new HVAC system or would like to know more about keeping your indoor air as clean and comfortable as possible, please contact us.

Heating System Repairs 24 hours NW Chicago Suburbs (1)

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Whole House Humidifier Pros vs. Cons

Wednesday, January 24th, 2018

Many view home heating from a pretty straight-forward standpoint. If they are comfortable, their thermostat is set correctly. If they are not comfortable, the thermostat is set too low or too high. Of course, when multiple family members are involved, this can create quite a challenging situation that is often resolved by the person who pays the utility bills. There is, however, another major factor in the comfort of your home. It is humidity.

We are all familiar with humidity during our Chicago summers but humidity plays a significant role in comfort during our winters in the Crystal Lake area as well.

Humidified air can feel much warmer, cozy, and comfortable. Dry air can lead to static electricity, premature drying of wood cabinets, flooring and furniture, and even more frequent illness. Families are often surprised at the amazing impact a properly humidified home can have on their comfort, especially during the cold weather months. They can also see energy saving benefits.

Some are familiar with smaller, single-room humidifiers that can help humidify a small space. These portable humidifiers can offer some relief but if lack of humidity is an issue for the whole house, and having an impact on you and your home’s comfort you may want to consider a whole house humidifier.

What is a Whole House Humidifier?

A whole house humidifier is a device that works with your furnace to add moisture into the air in your home. This moisture is provided through your home’s plumbing and is heated and dispersed into your home through your furnace and ductwork. A whole house humidifier is sometimes referred to as a furnace humidifier and provides air that simply feels warmer.

Pros and Cons

If you experience dryer air in your home, you can find relief from either a portable or whole house humidifier. Portable humidifiers only impact a small area and the water tank the humidifier uses must be refilled frequently. A whole house humidifier will improve the comfort of your entire home and because it is directly fed moisture through your plumbing, refilling a tank is unnecessary.

The downsides to a whole house humidifier are few but significant. First, a whole house or furnace humidifier can be a sizeable investment. Many, however, find that the air is warmer in their home following installation, allowing them to operate their furnace at a lower temperature. This, of course, can translate into long-term energy savings, which can help offset the original investment.

The other con to the installation of a whole house humidifier is that it can be a fairly complex task. It should be handled by a professional. A furnace humidifier must be installed correctly to provide full value. Beyond exceptional comfort, families using a whole house humidifier experience less illness and annoying static shocks.

Contact the Pros at Althoff Industries

If you’ve ever caught yourself saying “I can’t seem to get warm in here” or are constantly edging the thermostat upwards to stay warm, the problem may not be the heat but the lack of humidity. We invite you to contact us at Althoff Industries for a complete assessment of your HVAC system and your indoor air quality. We can help determine the efficiency of your present system and help you decide if a whole house humidifier can be beneficial to you and your family.

Staying comfortable indoors is more than just about the heat. Discover the important role well functioning equipment and humidity play in the warmth of your home with a call to Althoff Industries.

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What To Do Before Calling for Emergency Furnace Repair

Wednesday, January 10th, 2018

It’s a frigid winter day and you wake up to a cold house. You soon discover that the heater isn’t working! Your first thought is to call for emergency furnace repair.

Before you grab your phone, you can take a few simple steps to see if you may be able to resolve the issue on your own. This may help correct the problem quicker and without the expense of a potentially unnecessary emergency furnace repair call.

5 Quick Furnace Troubleshooting Tips

1. Check your thermostat.

  • Make sure that the thermostat is on and set to “heat.” This sounds obvious, but you wouldn’t believe how many service calls happen because the homeowner didn’t know that someone (like a guest or child) adjusted the settings!
  • If your thermostat has a fan setting, set it to “auto” instead of “on.” Otherwise, the fan may blow continually even when the air isn’t being heated.
  • If the room temperature is lower than the thermostat setting, try adjusting the setting up a few degrees to see if the furnace kicks in.

2. Make sure you have power to the furnace.

Even if you have a gas furnace, an interruption in electric power will interrupt your furnace from producing heat. You may have a circuit breaker that has tripped.

If that’s the case, you can reset it by turning the circuit all the way off and then on again. If the circuit immediately breaks again, call a professional.

3. Check your air filter.

An air filter that is extremely clogged will not allow the air to be heated properly. It may cause your furnace to overheat and shut down.

Remove the filter and hold it against the light. Can’t see any light through it? Replace it. We recommend checking your furnace filter every month and replacing as needed.

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4. If you have a gas furnace, make sure the gas supply is on.

If you’ve had any repairs done lately, someone may have shut off the gas supply valve and then forgot to turn it back on. Or, the gas company may have shut down the gas lines for maintenance. A quick check with the gas company is a good idea if you think this may be the case.

  • Check the gas valve at the gas company’s meter.
  • Check the gas valve on your furnace. Your furnace’s gas valve is on when the handle is inline (parallel) with the pipe. If it’s off, the handle will be perpendicular to the pipe.

If you smell gas, turn off the supply and immediately call a professional.

5. Check the ignition source or pilot light.

Most modern furnaces have an igniter coupled with a flame sensor rather than a physical pilot light. Both of these can wear out and require repair. In fact, ignitor and flame sensor problems are some of the most common furnace repairs we encounter.

If you have an older furnace, your unit may have a physical pilot light. A draft or interruption in gas service can cause the pilot light to go out. If your pilot light is out, and you’ve already confirmed that you have a safe gas supply, try relighting it according to your owner’s manual. (This is usually done with a fireplace match or long barbeque-style lighter.)

If you’re not comfortable with this, or the pilot light won’t stay lit, call a technician.

4 Furnace Facts to Know When Calling for Repair

If the above steps do not resolve your issue, it’s time to call for furnace repair. Gathering the following information will help your technician resolve the issue more promptly.

  • Make note of your furnace brand and model number.
  • Make note of your furnace’s approximate age.
  • Write down the steps you took in trying to determine the problem.
  • Be sure to let the repair company know if they have done previous work for you.

Share the above information when you’re on the phone with the customer service representative when scheduling your service call.

At Althoff Industries, we appreciate having this information so our technician has a head start on the specific problem. He or she can make sure to have the appropriate part or parts to resolve the problem on the initial call.

Althoff Industries offers Chicago-area emergency furnace repair 24 / 7 / 365.

Waking up to a home without heat can interrupt your entire day. It is our goal at Althoff Industries to minimize any disturbance to you and your home and restore heat quickly and safely. If the loss of heat is the result of a deeper issue relating to the age or maintenance of your furnace, we will discuss your options with you.

If you live in the NW Chicago suburbs or Crystal Lake and McHenry County area, we invite you to make Althoff Industries your go-to team when it comes to the comfort of your indoor air. Any day, anytime, we are here to assist you. Call (815) 455-7000.

This information is provided as a general guideline. Althoff Industries does not assume any liability resulting from the provided information.

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