Almost all of today’s HVAC systems are pretty quiet as manufacturers have figured out ways to take noise levels way down. However, you may still have an older system that is quite noisy which can be incredibly frustrating, especially during those hot summer nights when you have to blast your air conditioner and don’t want to be kept awake by the roar of your AC unit. So, how do you reduce and control the noise that comes from your HVAC system? Well, there are a number of ways to control the acoustics of your heating and air conditioning system, but it takes finding the culprit first. Once you find out what is causing the noise, you can investigate further. Here is how to control home HVAC system noise.
First, you’ll want to perform a preliminary inspection. The noise could be coming from any part of your HVAC system, but it is up to you to find the problem first. For instance, you may have detritus in your outdoor fan unit, which is causing the fans to jam. Sometimes small tree branches or twigs can fall in your fan blades and cause all sorts of problems. Be sure to try and isolate the problem before you attempt to silence your HVAC system. If you don’t isolate the issue, the issue could get worse and your HVAC system could get noisier and noisier over time.
One of the most common areas of HVAC noise is in the fan unit. If you are hearing loud noises coming from this section of your HVAC system, it is definitely time to do something about it. In most cases, this issue is simple to fix. All you have to do is turn off your unit completely and open the fan unit. After you open the unit, you’ll first want to look around for any visible signs of damage to the fan blades to make sure they’re working efficiently. Then you’ll want to check if the sound is coming from debris inside the that’s getting caught in the fan blades and if you locate any culprits, safely remove any obstructions from the fan blade area.
You may also have an issue with your ductwork that is causing the sound as one of the most common HVAC noise problems is leaky ductwork. If you have an older system – or even an older home – there is a good chance that you have leaky ductwork. What is leaky ductwork exactly? Basically, your ductwork may have little tears and rips that occur over the years as your system works hard to heat and cool your home. Ideally, you want to find where these leaks are and seal them with a combination of epoxy resin and plumbers tape. . Leaks are not only noisy, but they can also cause your system to work inefficiently and cost you money.
Lastly, a noisy air conditioner could also be a sure-fire sign that your system is ready to be upgraded. After a while, older HVAC systems simply break down or cease to work the way they are supposed to. The noise is merely a signal telling you that it is time to replace it. But this isn’t often such a bad thing, because you may be able to upgrade to a newer, better system like a zoned HVAC system. One of the benefits of upgrading to a zoning system is that it is more efficient because you can control the temperatures for each room separately.