If you are hearing loud screeching and rattling noises when you turn your furnace on the bearings in the blower motor or the blower motor itself could be to blame.
Furnace air flow loud.
The problem is to understand the cause and from there see how the situation can be remedied.
Your blower or furnace fan should be set to deliver the proper airflow per ton.
If there s rattling in your furnace and ducts such vibrations may have simple fixes.
While every home is different and requires a unique fix here are some of the most common solutions to air noise resulting from high static adjust the fan speed.
Here are a few things.
Loud hvac air return.
Loud furnace causes solutions blower motor.
In the room above the furnace room i used to measure 33dba noticeable noise at a distance of of 1m from one of the return air intakes and now i measure 28dba not noticeable.
If the filter is too restrictive the noise will travel back up the ducting to the intake vent producing the same problem.
If you notice something wrong such as the furnace not blowing hot air properly please take it seriously and call for furnace service from our.
Your blower motor forces the warm air out of your furnace and through the air ducts in your home.
I can recommend this system to reduce the noise further but you should first check that your furnace has as much unrestricted air flow as possible.
I didn t want to add another filter behind.
High static pressure is a common problem.
Loud blowing air and fan noise.
The furnace may need greater air flow and thus larger ducts.