Air Conditioning Evaporator Cleaner

JefferiesFarnol · 1st July 2022, 18:25

Hello chaps,

I've finally got my A/C working (fingers crossed for a while, at least). I had a man come round to do it and there didn't seem to be an active leak and we couldn't work out how all the gas had gone just a few days after the garage re-charged it; but as we all know, garages are not infallible. In any case, it has dye in it now so if there is a leak, we'll be able to see it next time.

One thing I've got now is a musty smell only for a few seconds when the A/C starts so I want to clean the evaporator (which I suppose I should be doing anyway). It seems the foam kind is the best and the only readily available one I can find is by Liqui-Moly. I'd sooner spray it up through the drain hole than down through the vents, but I wonder if anyone can say which hole is the right one?

I've done the plenum drain mod so if I leave my prodding stick poking through that one, will I see the evaporator hole next to it?

1st July 2022, 18:25	#1
JefferiesFarnol Avid contributor Rover 75 Tourer Join Date: Aug 2021 Location: Canterbury Posts: 168 Thanks: 64 Thanked 18 Times in 15 Posts	Air Conditioning Evaporator Cleaner Hello chaps, I've finally got my A/C working (fingers crossed for a while, at least). I had a man come round to do it and there didn't seem to be an active leak and we couldn't work out how all the gas had gone just a few days after the garage re-charged it; but as we all know, garages are not infallible. In any case, it has dye in it now so if there is a leak, we'll be able to see it next time. One thing I've got now is a musty smell only for a few seconds when the A/C starts so I want to clean the evaporator (which I suppose I should be doing anyway). It seems the foam kind is the best and the only readily available one I can find is by Liqui-Moly. I'd sooner spray it up through the drain hole than down through the vents, but I wonder if anyone can say which hole is the right one? I've done the plenum drain mod so if I leave my prodding stick poking through that one, will I see the evaporator hole next to it?