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Question DetailsAsked on 10/27/2017

Do I need UV kit on AC unit tech wants to sell me 1

Every time tech comes to service AC,he try’s to sell UV kit to kill mold. Previous techs. Sprayed and washed with water hose.

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1 Answer


If you have a chronic mold problem, especially mold in the ducts too, then maybe so - ditto if you are needing frequent coil cleaning because it is molding up (though that can commonly be solved by extending the after-run time of the fan to dry the coil as it warms beck up).

I would say probably only about 10% of A/C coils need a U/V unit (which to be effective needs to be multi-bulb and cover both sides of the coil, not just one bulb on one side - so $1000 range item to install plus noticeable electric bill increase), and most of those are in areas with continual high humidity during the A/C season like along the Gulf Coast and humid parts of the Mississippi Valley and Southeast predominately.

Also commonly an issue with units running in cool, moist areas like coastal Pacific Northwest or far Northeast where the A/C is not so much for cooling but for humidity control and air cleaning - like with owners with asthma or severe allergies or such.

Answered 2 years ago by LCD

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