The must odor is coming from the cooling coil caused by the buildup of mold
mildew, dust and dirt embedded into the coil. That spray stuff just
temperoralrily masks the problem. A true no rinse coil cleaner is the only
true and correct method of correcting the problem. On the average there is
about 3/4 of a cup of junk on the coil bad for the health and one of the
biggest problems in the industry.
Fresh smelling A/C: results guaranteed
1 pint of common ordinary rubbing alcohol
3' long 3/8" copper tubing with a short "J" bend at 1 end
1 small funnel
connect the "J" end of the copper tubing to the air conditioner condensate
drain hose under the vehicle (the thing that drips water). Stick the long
end of the tubing up through the engine compartment so you can reach it
from above. The copper tubing must be long enough to extend above the
center of the dash. Now pour the rubbing alcohol into the upper end of the
tubing using the funnel. Continue adding more alcohol until it starts to
spill over onto the floorboard of the car or truck. Don't worry, the
alcohol will evaporate and won't harm the carpet. This will backflush the
system and kill the mold & mildew spores. Now disconnect the copper
tubing. If desired you can collect the alcohol in a cake or pie tin as it
drains back out and reuse it again.
A/C now all nice and fresh again, guaranteed.
Now, to keep it nice and fresh, switch your A/C over to max heat about 1/2
block before stopping for the day (every day). This will dry out the
system and prevent the mold and mildew from ever forming.
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