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How Do You Install the Air Filter on a Revolv Evaporator Coil? - Ask the Expert Episode 165

Not all evaporator coils look the same, and that can especially be said for the Revolv evaporator coil. So, how you install the air filter could be confusing. Video Script: "Hey Dan, I am looking at a Revolv evaporator coil. I'm not sure which way I should install the air filter. Does the filter just lay on each side of the unit?" No. It does not. The particular coil she is asking about is an "a" coil because it sort of looks like the letter "A". It is also uncased, so you see the coils on the sides, and she's asking if you just lay a filter on either side. You don't do that because it would not be very effective. The filter in a home heating and air split system or a package system is going to be placed somewhere between the return supply and the air handler, or the package unit, depending on what you have. The return is the air going out to the air handler. You would install the air filter between that. It would be somewhere in the ductwork. You would not just lay it on the coil. I guess you could lay one on the coil, but it wouldn't really do anything. Have more questions? Just ask them in the comments below or on Facebook or on Twitter.

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Mary Vance

Does a filter lye over the top? Does this unit require two filters ?

Brittany Ware

What size air filter does it need

Disbelief

No freaking way. In older mobile homes running mortex or these revolv evaporators with downflow air, you 100% definitely put the filter directly on the coil. Failure to do so will result in the coil plugging up with gunk from the attic vent and elsewhere. Be warned: a paper or fiber filter is NOT designed for this job. You'll need the correct size wire mesh filter. Here's an example: https://www.amazon.com/16x19-Filters-Mobile-Homes-Aftermarket/dp/B0052V8HT8 A secondary paper or mesh filter installed on the air handler intake is also advisable, but certainly not necessary in all cases. Newer mobile homes do not necessarily follow this protocol, as they tend to have a much tighter hvac system with an air filter on the intake door. However, if downflow, a wire mesh filter directly on the coil of these can only serve as extra protection that'll save you the cost of an hvac guy cutting out your coil for cleaning.

Frank

Will replace the A evaporador coil Model 1836M4A...R-410A freon....Revolv coil has two connections....a small copper connection..no problem....my Question...the large connection,the return...has a Button inside and the connecting tube has a crossed inside.... Question..does the cross inside pushes the Button of the A coil ?