My home was completed in April 2001, and the air handler was installed in a closet in the garage. The closet's air space does not vent into the attic, garage, or inside living space which makes the air pretty warm and stagnant. Since I live in South Texas near the coast, the weather is typically hot and humid most of the year which causes condensation to build up on the outside of the air handler. The condensation was so bad, that the builder has had to replace the air handler, the platform, and some surrounding drywall.

Should I make the builder place the air handler in the attic? They placed a louver on the closet door (in the garage), but now I see a "not so nice" louvered door every time I drive into the garage.

Air Handler in Garage