RE: Do we change filter driers on units that have them inside the condenser?

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Hey guys

My employer is a lennox dealer and unfortunately on some of the units  they come with driers on the inside of the condenser. Do we have to change them if we are doing a pump down and swapping the evap or txv.

CoryRay Rookie Asked on March 7, 2018 in Residential HVAC.
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6 Answers

Technically speaking, if the drier itself is never exposed to atmosphere, and you’re just making a repair on a clean system (no burnout or acid as previously mentioned) then it can stay where it is… it’s good practice to do it, but not always necessary.

Super Tech Answered on March 9, 2018.
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