Sometimes, whenever my HVAC turns on to cool or heat, it makes a loud, deep thumping noise when it first turns on.
It almost seems like it's trying to start up, but getting stuck, making this thumping noise and stopping briefly. So, the air blows, thump, stop, air blows, thump etc but eventually (after maybe 5-10 of these cycles) it runs normally.
Any idea what it could be?
It almost seems like it's trying to start up, but getting stuck, making this thumping noise and stopping briefly. So, the air blows, thump, stop, air blows, thump etc but eventually (after maybe 5-10 of these cycles) it runs normally.
Any idea what it could be?