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Serving Metro Atlanta & Surrounding Areas

Cunningham Associates
Heating and Air Conditioning, Inc.

Why is My Furnace Making That Weird Sound?

Your furnace operates at a relatively low noise level. The few sounds it does make are not disruptive and usually go unnoticed as the winter drags on. That’s why a sudden change can indicate your furnace is suffering from a malfunction. The type of noise your furnace is emitting can help you pinpoint the cause behind the sound. If your system is making an unusual noise, and you’re concerned, keep reading to find out what the sound means for the health of your furnace.

Rattling…

A rattling or banging sound can indicate a component in your furnace has come loose. Unfortunately, without inspecting the unit there is no way to tell which part is no longer secure. Ignoring the sound can lead to the malfunction getting worse, meaning the rattling will grow louder, and the loose component will completely disconnect. If this happens, turn your furnace off immediately, and contact a HVAC specialist. Having your system inspected before the rattling or banging increases in volume is crucial when it comes to saving your furnace from a serious breakdown, and keeping your repair cost manageable!

Squealing…

A furnace that squeals points to a blower motor that lacks proper lubricant between its moving parts. The friction created as the components in the motor rub together produces the unfortunate noise. During a yearly inspection, a HVAC technician examines the blower motor to ensure it has enough oil, and if it doesn’t, they add the needed amount. If you didn’t get your furnace serviced before the heating season started, and your unit is squealing, it’s time to give us a call.

Clicking…

Clicking sounds coming from your furnace can signal an issue with your unit’s igniter. If the sound lasts for only a minute or two, the igniter is likely dirty and needs to be cleaned. A problem with the flame sensor is also a possibility. The flame sensor acts as a safety mechanism, which ensures there’s a flame present when the gas valve opens. Without a flame sensor, gas would be released with no flame to ignite it. If the sensor is malfunctioning, it may not sense a flame even when a flame is present. If this happens, the gas valve will close prematurely. Problems with your furnace igniter should be addressed immediately by a highly trained HVAC technician.

When your furnace works to warm your home, the only sounds you should hear are a quiet hum and a rush of air flowing through your vents. If those noises are replaced by a sound you’re not familiar with, please contact our team here at Cunningham Associates to schedule an appointment.

The Top Signs That Your Furnace May Need to be Replaced

With winter right around the corner, you may want to take a moment to consider the condition that your furnace is in and whether you should consider having it replaced this fall. By replacing your furnace before winter arrives, you will ensure your comfort in the coming months by preventing your furnace from breaking down on you when you need it most.

Hitherto, how will you know when your furnace is in need of replacement? While one of the clearest signs that your furnace needs to be replaced is age, as furnaces are only made to last between 15-20 years, there are several other indicators that your furnace may be nearing the end of its usable life. Below are a few of the signs you can look out for in your home.

You Cannot Keep Warm

When trying to determine the condition of your home’s furnace, think back to the last time you had to run it; did it keep you and your family warm? Or were you constantly cold no matter how often you adjusted the thermostat? If you were unable to keep warm, this is a clear sign that your furnace is failing and needs to be replaced, as it is no longer able to sufficiently do its job.

Different Rooms Are Different Temperatures

Similarly, your furnace likely needs to be replaced if there are great variations in temperature throughout your home. If some rooms are freezing while others are hot, this is a sign that your aging furnace is having trouble distributing heat evenly throughout your home, and it will likely need to be replaced before winter.

Your Furnace is Making Unusual Sounds

One of the clearest signs of a failing furnace is if it begins to make any unusual sounds. While your furnace may make a certain amount of noise when it first turns on and off, you will be able to tell that something is wrong if these noises get louder, or if they change drastically. For instance, if your furnace begins to make popping, banging, clanging, or screeching sounds, this is a clear sign of trouble. While your furnace may be able to be repaired, you will want to consider your furnace’s age before you invest more money into it.

Please feel free to contact us to learn more about the signs that you can look out for indicating that your furnace needs to be replaced. The team here at Cunningham Associates is always happy to help!

3 Reasons to Schedule a Furnace Tune-Up Before Winter Hits

November weather means turning on your furnace for a long winter. If the first cold snap hasn’t hit your local area yet, then now is the best time to get your furnace serviced. Here’s why:

  • The beginning of winter is a busy season for heating contractors and furnace repair companies, which could delay your repair. You don’t want to wait until after the first big storm to get your furnace serviced. Not only can that leave your home without heat during the following low temperatures, a long delay can damage your heating system more or even be dangerous if you have a gas-powered furnace.
  • Servicing your system can help solve problems before they start. Small malfunctions and inefficiencies build up over time, and getting your HVAC checked before you use it regularly can help you catch those problems before your system breaks. Having your furnace serviced means a trained professional checks your ventilation, gas and power connections, and the internal cooling system, which saves you money on larger, preventable repairs.
  • Tune-ups help your home’s air quality. Any air conditioning system in your home collects dust and debris as it circulates air. While changing the filter is one of the best steps you can take to ensuring that allergens are removed from the air and your system isn’t overworking due to poor ventilation, sometimes it’s not enough. Dust can build up in the internal workings of your furnace and mildew that may have built up during the furnace’s dormant season needs to be removed.

Scheduling a tune-up for your furnace before the busy winter season not only helps ensure the system will run once the weather turns, it helps keep your furnace running efficiently. So, contact Cunningham Associates to set up a time to schedule a tune-up.

Short Cycling Furnace Causes: Dirty Flame Rod

Ever wonder what causes a cycling in a furnace? We encourage you to read this article to learn how a dirty flame rod can lead to short cycling.

The Flame Rod 

The flame rod is part of a furnace’s built-in safety system. Its job is to help regulate the state of the gas valve. The idea is that, when ignition is successful, the burner flames will heat up the flame rod, causing it to send a signal to keep the gas valve open. If, however, combustion does not occur, the cold flame rod will soon shut down the gas valve, thus keeping raw gas from leaking out.

Problems 

This is all well and good–so long as the flame rod can do its job correctly. The problem is that, over time, contaminants build up on the surface of the rod. Such contaminants hamper its ability to detect heat. Eventually they will keep it from being able to do its job at all, meaning that the rod, failing to detect heat, will close the gas valve down even when combustion is occurring.

Fortunately, a furnace technician can often resolve this issue simply by giving the flame rod a thorough cleaning with sandpaper or steel wool. If your furnace has been short cycling, it is important to have your flame rod inspected as soon as possible.

Give Cunningham Associates a call today with any questions or service needs you may have.