Coil Cleaning in Houston, TX

What dirty coils actually cost you

The bill is the small part. A fouled evaporator coil runs colder, ices over, and then drips where it shouldn't. In Houston that coil usually sits in the attic, directly above sheetrock. Water finds the secondary pan, then the ceiling. A float switch helps only if it still works. Slugged compressors and stained bedroom ceilings both start as a gray mat on the coil face.

That mat builds on the upstream side, where you can't see it. Return-side leakage is the usual source. Attic dust gets pulled into the air handler. So does blown insulation, plus shed fiberglass from eroding duct board liner. Single central returns make it worse, because all the velocity loads one grille.

Cleaning means flushing against the direction of airflow. Debris went in one way. It has to come out the same way. Many cased A-coils have no real access, so a panel gets cut and resealed afterward. We rinse, then clear the condensate line and trap, because a clean coil sheds more water than a dirty one.

Blower wheels foul alongside the coil. Loaded vanes move less air. We check that wheel before calling the job done.