Air conditioning vents can sometimes emit a high pitched whistling sound.
If your air conditioning vents are emitting a high pitched whistling sound, it’s important to get to the bottom of the issue and eliminate the noise.
What is causing the sound?
This sound often occurs when there is insufficient air flowing through the return vents, which can happen for a variety of reasons.
One of the most common causes of whistling sound is dirty filters. It may be that the return vents have a blockage, the dampers may be closed, or there are too many doors closed in the home.
The noise comes when there is not enough air being received by the blower. The pressure increases and any noise given off by the HVAC system becomes increasingly louder. This sound can be thought of as an early warning sign that something is amiss with the system and it gives homeowners a chance to rectify problems before they escalate and become more costly to repair.
It’s important to get the problem solved fast because with a lowered flow of air, the system is having to run harder. This will increase your bills and put a strain on your system.
Solving the problem
How to resolve this issue all depends on the reason for the reduced airflow. The skills of a trained St Louis HVAC technician may be necessary to solve the problem.
Dirty air filters
As air filters do their job, they gradually become clogged up with dust and dirt. Fixing this is a simple task, just change the air filter. It is generally recommended that air filters be changed every three months.
Blocked return or supply vents
Sometimes this is something as simple as a piece of furniture that is placed in front of the vents. It could be that the vents are dusty. Even if a room is not in use, the vents should not be blocked as it can affect the entire system.
A quick check of all the dampers will easily eliminate this as the cause of the whistling noise.
Too many doors are closed
A clear air flow throughout the home will ensure that the system has enough air within it. Leaving more doors open can sometimes fix the whistling noise issue.
Give Hely Heating & Air Conditioning a Call!
We have the experienced and skill necessary to get to the bottom of your issue! Give us a call 24/7 at (636) 305-9555.