HVAC systems are generally reliable and require little maintenance. However, like any other mechanical system, they can develop problems over time. And while some problems may not be serious enough to warrant a call to a repair company, there are certain noises that indicate a problem that needs to be addressed. Here are five HVAC noises that you shouldn’t ignore.

1. Grinding

If you hear a grinding noise coming from your HVAC system, it’s likely that the fan motor bearings are starting to fail. The fan motor bearings are what allow the fan blades to rotate smoothly. When they fail, the fan blades will start to grind against the housing, which will cause noise.

This can be a serious problem as it can lead to the motor overheating and burning out. If you hear this noise, the team at Polar Express Plumbing, Heating and Air Conditioning can check it out before you experience a complete failure.

2. Squealing

A squealing noise coming from your HVAC system is usually indicative of a belt that needs to be replaced. The belts in your system help to keep the various components working smoothly, so it’s important to replace them as soon as possible when they start to fail.

If you hear a squealing noise, it’s best to shut off the system and arrange to have it looked at. Trying to operate the system with a failing belt can cause further damage to the system.

3. Banging

Banging noises coming from your HVAC system are usually indicative of a problem with the blower motor. The blower motor is responsible for circulating air through the system. When it starts to fail, it can make a banging noise as it struggles to turn on.

The motor may also be starting to come loose, or there could be something caught in it that’s causing it to bang around. Either way, this is a problem that needs to be checked out.

4. Rattling

Rattling noises can be caused by a number of factors, but they’re usually indicative of loose parts. This can be anything from loose screws to damaged ductwork. While it may not seem serious, a service call could prevent the problem from becoming serious.

5. Hissing

Hissing noises coming from your HVAC system are usually indicative of a gas leak. Your HVAC system likely uses natural gas or propane to heat your home or rental property, and a leak can be very dangerous.

This is a very serious problem that needs to be addressed immediately. If you smell gas or hear hissing, you should shut off the system, evacuate the area, and call your gas company right away.

How to Determine the Cause of a Noise From Your HVAC System

If you hear any of the above-mentioned noises coming from your HVAC system, it’s important to call a professional for help. A trained technician will be able to quickly diagnose the problem and make the necessary repairs.

In some cases, the noise may be coming from something as simple as a loose screw or piece of ductwork. However, attempting to diagnose the issue on your own and assuming that the noise is nothing serious can lead to much bigger problems down the road.

If you’re not sure whether or not a noise from your HVAC system is cause for concern, it’s always best to err on the side of caution and call. They’ll be able to quickly diagnose the problem and get your system back up and running smoothly.

Let Us Fix Your Troubling HVAC Noises

When you turn to Polar Express Plumbing, Heating and Air Conditioning, you can be sure that you’re getting the best possible service. We’ve been serving homeowners in the Lake Elsinore, California area for over 20 years, and we’re dedicated to providing our customers with the highest quality service possible.

Whether you need a simple repair or a complete system replacement to fix the cause of the noise, we’re here to help. And if the noise is benign but you’re interested in a quieter air conditioner, we offer QuietCool whole house fans. With these ventilation systems, homeowners save money and energy while enjoying whisper-quiet operation.

We also provide air purification, filtration, and humidification services to meet all of your HVAC needs. If you’re concerned about the noise your HVAC system is making, or if you’re interested in any of our other services, don’t hesitate to contact us today.

Meet the Author
Anthony Dieringer
Anthony Dieringer

company icon