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Old 05-06-2004, 08:19 AM
acr acr is offline
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AC Evaporator Problem-Help Appreciated

My evaporator assembly has started forming excessive water on the underside of the evaporator, inside the car. It's dripping down on the passenger side floorboard. Drain hose seems clear. Hot Rod Air unit, about two years old. Any ideas on problem & how to fix? (Sorry if this is posted in the wrong subect area.)

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Old 05-06-2004, 08:50 AM
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Some more information could be helpful.
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Old 05-06-2004, 08:59 AM
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The hose should be routed outside, condensation is normal.

Troy

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Old 05-06-2004, 09:13 AM
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The drain hose is routed outside the car. The water is forming on the underside of the plastic evaporator assembley cover that routes the cold air to the various ducts/vents & is mounted INSIDE the car, right above the passengers feet & transmisson tunnel.
All I can figure to do is mount a drain tray inside the car to catch the water. Croz, let me know if you need more info. Thanks for the replys.
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Old 05-06-2004, 04:38 PM
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Ah, ok, I wasn't thinking earlier. If you can't mount it outside, then insulating it could help reduce or stop condensation.
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Old 05-06-2004, 08:10 PM
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Will do, maybe I'll try some of that black cork type insulation that is self adhesive. Thanks to Croz & Troy for your comments.
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Old 05-06-2004, 08:38 PM
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Don't you just love the humidity. Just as condensation forms on the outside of a glass of iced tea the plastic housing is getting colder than your local dew point. the only thing you can do is to insulate the housing and the any portion of the suction hose that is on the inside of the car.
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Old 05-06-2004, 08:49 PM
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Thanks again! Anybody have a suggestion on the best type/brand of insulation for this application?
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Old 05-06-2004, 09:40 PM
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If the suction hose and fitting don't show I just use water pipe insulation. For the condensor box the cork type would work or maybe Dynamat. Dynamat is what high end car stereo installers use to keep body panels from rattling. 20 bucks worth from summit catalog should do the trick. It all depends what shows. If it's well hidden you could go to your local home center and a small roll of pipe wrap and aluminum tape.
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