Why do I have rust on my wall?

Many folks in Arizona have big ugly rust streaks on the exterior wall of there homes. The question is…Why? Well usually this is caused by a clogged drain line. If the indoor section of your air conditioner is in the attic, it will have a drain attached to it. The drain is for the condensation that accumulates on the cooling coil. If that drain is clogged or you have a malfunction in the unit itself, this water (condensation) will overflow into the safety drain pan that is underneath the air handler or cooling coil within the attic.

The safety or secondary pan is not intended for long term use and will rust. The longer it has water in it the greater the degree of rust. Most builders placed the secondary drain pipe high on your exterior wall. The idea is to alert a home owner that water is draining from the emergency pan. However, most homeowners don’t know so the problem persists and the wall becomes stained with rust.

If you have water draining from a pipe high on the exterior wall of your house, call us so we find out why the primary drain is not working and why water is overflowing into the safety pan.

The photo below is a new drain pan with two water safety switches that will shut the system down if water gets into the safety pan. Drain Safety Switches

Air and Water Factor Cooling, Heating, & Plumbing services, Phoenix, Ahwatukee, Chandler, Gilbert, Mesa, Scottsdale, Fountain Hills, Gold Canyon, Apache Junction, & Sun Lakes. We service all brands including, Trane, Carrier, Lennox, Amana, Goodman, Day & Night, Comfortmaker, ICP, Ruud, Rheem, Heil, and all others.