Why Are High Efficiency Furnaces So Loud?

If your furnace is running loud, you may be wondering why it’s making a lot of noise. After all, other people at your office have High Efficiency furnaces that are very quiet. Fortunately, there are some solutions to this problem. Listed below are a few common causes of noisy furnaces.

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Older furnaces tend to be louder than newer ones

If you have an older high efficiency furnace, you may want to consider replacing it. These units use more energy and are more likely to break down, resulting in expensive repairs. Choosing a newer model will also ensure that you will save money on your energy bills.

Some newer models use dual-stage heating instead of a standing pilot to ignite the gas burners. This saves energy by operating at a lower capacity 75 percent of the time. This means the high setting is only used when the weather is very cold.

You may hear a whistling noise from the fan when the furnace is turned on. It is possible that the fan shaft is bent or is loose. In this case, you may have to open the doors to let the air flow. If the noise continues, you may need to call a professional.

Draft inducer motor

If you’re experiencing excessive noise from your furnace’s draft inducer, it may be a faulty motor. Some inducers have recessed fan blades, which you can turn manually. If you cannot turn them freely, they may be damaged or need to be replaced. If you suspect a motor problem, contact a service provider or technician.

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While repairing a motor is possible, it is usually not recommended. It is a difficult task and requires professional expertise. Sometimes the motor may be damaged beyond repair, and this can cause excessive noise. Sometimes, you can replace a motor yourself by tightening a screw or cleaning out the insides of the inducer.

If your draft inducer motor is grinding, it may be a faulty motor bearing. Inducer motors require bearings that ensure a smooth motion. If a motor bearing breaks, you should replace it. If you cannot remove the old inducer fan assembly, consider an electrical problem.

Worn out bearings

The noise from your high-efficiency furnace may not be normal. However, there are ways to get rid of the noise and keep your family warm. The first step is to identify the cause of the noise and repair it. If you notice a rattle in your furnace, this may be the sign of a worn-out bearing or loose components.

Another reason your high-efficiency furnace may be so noisy is due to a broken motor bearing. These bearings may have become worn out, causing the motor to chug loudly. To fix this issue, you should contact an HVAC specialist.

Watery noises

If you notice watery noises coming from your high-efficiency furnace, there are a number of potential causes. While some of these sounds may be the result of a simple mistake, others may indicate a more serious issue. In any case, you should contact a professional to investigate the problem.

First, it’s worth determining whether the noise is coming from the blower or some other component. A noisy blower might be a sign that the fan belt is not functioning properly. Or the blower motor may need lubrication. Make sure you use the proper type of lubricant.

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Another possible cause is a clogged drain pipe. This part of the high-efficiency furnace is responsible for allowing the condensate to escape the home. If this part is blocked, water may back up in the furnace. This can lead to a leak.

Delayed gas ignition

Delayed gas ignition is a major safety issue with high-efficiency furnaces, and it can also cause equipment problems. It can cause a small explosion, which can result in a loud bang or boom. In addition, it can cause problems with the heat exchanger, which can crack over time and leak poisonous fumes into the home’s air. If left unchecked, a delayed ignition can also result in a flash fire, which can cause severe burns.

High efficiency furnaces are notorious for their loudness, and the loud bangs they produce can be alarming. One possible cause is a delayed gas jet ignition. The delayed gas jet ignition leads to a mini-explosion and gas buildup, which can result in a loud bang.