Is it normal for my air handler coil to be severely rusted out?
4 Reasons
- This is usually the case when an air handler is placed in an attic where temperatures average between 90 degrees to 140 degrees with humidity levels averaging 80 to 100%. The other poplular location is the garage, where temperatures are milder, averaging between 80 degrees to 100 degrees with humidity levels averaging 80 to 100%.
- The air handler usually works non-stop most of the year. It is busy cooling and removing humidity. This means the air handler usually remains moist and never has a chance to dry out. This is one reason the insides becomes rusty and sometimes moldy.
- Add all the cleaners, air fresheners,wood treatments and everything else that is in your home's air to the moisture, and you have a chemical stew that sits on the coil in the air handler and chews away at it. Regular maintenance will help clean this mixture of chemicals off the coil and monitor the condition of the coil.
- Technician generated problems. Inexperienced, lazy or indifferent technicians that use the wrong cleaners in the wrong places. Sure the acid foams up nice and removes most of debris, but how well did they rinse off that coil. That acid won't stop working because the technician left. Usually the acid joins the rest of the chemical stew chewing on your coil.
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