Second Air Conditioner filter

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bobalong

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Just thought I'd share this. Few weeks ago I did the final winterization on my engines.

Had everything with me, even a helper. Now I'm ready to spin off the oil filters. Got my zip lock ready, oil filter wrench, 3/8 socket wrench. Turned the nut right off the bottom of my filter socket (the kind that cups over the bottom of the filter cartridge) Called my mechanic, he suggested poking a huge screwdriver thru it (I knew that but didn't have one big enuf to help)

He came down and had a strap type wrench, it really stretched it but he got them off.

Now as for the A/C filter. While I was waiting for help I routed a new drain condenser tube from my foreward A/C. Noted that the mesh filter was clean and all was good. Then since I had time for just inspecting stuff, I found a second filter about 18" from the one attached to the condenser. Who knew ? I'd never seen it before. There was a grill covering it, but the fins were faced down and the only way to see the filter was to stick your head somewhere there was really no reason to be.

Needless to say almost 3 years use without being cleaned, it was choked up.
 
He is talking about return air filters. Most units come with a filter located right at the coils. Then it is common for builders to mount a filter right behind the return air grill up stream of the unit.
 
90% of return air grills have a filter They have to be checked every season the ones black nylon plastic they are washable. the one ones in aluminum mesh they can be washed too other wise replace with the thin plastic ones they great. The foamy just replace them. That's one of the causes of damaging compressors and fans too run hot and high amperage. Air filters must need attention all times cars ,houses, boats etc. If you have pets I would suggest more often.
 
My Chris has two AC units. The foreward unit only has the aluminum mesh filter attached to the condenser. I know there is no filter in the air return grill because I have removed it tryin to figure out how to change the air flow and resistance. The flex duct from the blower blows into the bottom of a square box in the wall cavity and then they attached a grill to the side of the box. Lots of air rush sound as the air blows into the flat interior wall of the box and then changes direction and out the grill. I need a chamelion (sp) rotating ball deflector to smooth the air flow inside of the box. Haven't figured it out yet. The grill is there till I do.

Never figured on the foreward AC having two filters. It splains why the blower motor always made a weird sound. As boatcomfort stated, it's been causing excess amp draw and heat. Now I know.
 
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