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Errm, what do I ask my contractor to do, please? FWIW, I have an older home with 4-inch ductwork but was meticulously maintained by former owners. (The filters are the 16x25x4 - reads MERV8/MERV11)

Just had a lovely Carrier Infinity system (furnace and a/c) installed; it's GREAT.

THE PROBLEM: I am going through those filters every two and one half WEEKS !!! Granted, I smoke and have pets...

Yes, I've changed the remote batteries x 2 (always use Duracell).
Also, done the "reset" on remote, and also switched On/Off the Circuit Breaker.

Remote: Sometimes when pressing either the Temp...

I'm having cooling problems with my Fujitsu a/c and heat pump unit, installed in June 2010. It worked FANTASTIC up until 7/23/11. Temp was mid 80s; I left it running (remote temp 64, fan high; a/c...