Humming or other strange noises coming from your residential HVAC unit can be frustrating and annoying, but they can also indicate a problem with the system. Common causes of noise in an HVAC system include issues with the fan motor, belt drive, ductwork, blower assembly and other components.
If you hear a humming sound coming from your HVAC system, it could be caused by an issue with the fan motor. When a fan motor is struggling for power due to poor maintenance or worn out parts, it can cause loud humming noises from within the unit. It’s important to have this problem looked at and repaired immediately in order to avoid further damage to your HVAC system.
Another common cause of noise from an HVAC unit is related to the belt drive. When the belt begins to wear down or slip off its track, it can cause a lot of vibration and loud humming noises. If you suspect this is the source of your noise issue, make sure to have it looked at right away so that you don’t run into any costly repair bills down the road.
Your ductwork can also be responsible for producing strange noises when air passes through them quickly enough to create a “humming” sound. It’s important to check that all of your ducts are properly sealed and insulated in order to reduce these types of sounds as well as improve energy efficiency throughout your home.
Finally, an issue with the blower assembly can also result in loud humming noises coming from your HVAC unit. The blower wheel may become damaged over time due to lack of proper maintenance or mishandling during installation which leads to vibrations and unwanted sounds coming from within your unit’s walls.
It’s always best practice to contact us if you notice any type of strange noises coming from your HVAC unit in order to diagnose and fix any underlying issues before they escalate into costly repairs down the road or a fire hazard or other dangerous situation.
