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Johnnystaff 10-17-2012 04:18 PM

Evaporator cleaning
I just returned from the dealership, and they said they recomend an evaporator cleaning. When I asked how they did it the guy said they drill a hole into the evaporator and fill it with a cleaning foam. That seemed a little weird to me so I'm wondering, has anyone here had it done or done it themselves? If so what all is entailed in the job? I have a 2010 with 50k on it

Also-ran 10-17-2012 05:09 PM

I once saw the evaporator on the HVAC system at work in get cleaned and they did it with a can of foam.

Johnnystaff 10-17-2012 05:30 PM

where did they put the foam? did they drill a hole into it?

Also-ran 10-17-2012 08:21 PM

They soak the coils with foam, the foam drips off and evaporates. There were removable panels to get to the one at work. My guess is they need to drill a hole because the box on the focus is too small for a removable panel and/or not easily accessible.

jdetzel 10-17-2012 10:49 PM

Are you getting odor from your vents? The foam is more of a fungicide to kill bacteria and mold growing in the evaporator.
If you are not getting any odor then you do not need it.
I try to avoid running the A/C on recirculating air when I can. I think it helps keep it drier to run outside air thru.

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