Can we freshen our air?
May 11, 2022 9:56 AM   Subscribe

Our new condo does not appear to have filters for the HVAC. Should it?

The building we moved into has a central HVAC system for the whole building. There's one air intake in our unit and several outflow vents, none of which have filters. I am not used to this; our last couple places have had central air in the house/unit that I maintained and regularly changed the filters in.

Is the fact that our current setup is filterless normal for this type of HVAC? I assume there's filtering done in the central unit (on the roof), but of course that is not something I am able to verify/maintain other than by asking the building maintenance folks.

I ask because our place is suuuuuuuuper dusty; our old place wasn't pristine, but there's exponentially more dust in this place than in that one, and I don't know whether that's due to the lack of filtering or some other externality. The airflow is good, the heat works great (haven't had to use the AC yet thanks to a legendarily wet Portland spring), so I'm not worried about the overall functionality of the system, just the level of dust I'm seeing.

I can and will take more/more frequent cleaning steps to help minimize the level of dust, for sure, but I wonder if my first step is to put a filter in our vent system somewhere that maybe should have one.
posted by pdb to Home & Garden (1 answer total)
 
There will be filters (because otherwise the AC coils would get dirty and freeze over) but they are likely located immediately upstream of the coils in the mechanical room.

Most hvac filters where people don't care (often as low as MERV 8) are pretty marginal for fine dust allowing a lot to pass through.
posted by Mitheral at 11:48 AM on May 11, 2022


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