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View Full Version : Multiple air filters or just 1....



Wildduk
06-14-2011, 03:51 PM
We just got a new house...It is 2 stories with a unfinished basement....It has 2 Frigidair A/C units and gas heat.....

Currently there are only return filters located at the air handlers.....There are multiple returns located around the house, about 2-3 per story......

Should I replace and add filter grates to these returns, or is the 1 on the air handle enough.....Every other house I lived in had filters located at the begining of the air return...

Thx

heatingman
06-14-2011, 08:39 PM
The ones on the air handlers are sufficient. DO NOT ADD SECONDARY FILTERS. Residential hvac equipment is not designed to handle multiple inline filters.