re: A/c not cooling at night

quote:

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Is the fan still blowing? It is that would tell you that it isn’t freezing

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If your evaporator coil in the unit itself freezes, the fan will still blow, but you won't get any cold air out of the vents.

I had that problem just a month or so ago. I wound up taking my unit apart enough to get to the coils and saw they were frozen solid. I took my wife's hair dryer and defrosted the thing, and that took almost an hour to get all the ice out the coils and fins. Then I saw where the coils were dirty and took one of those stiff nylon brushes and pulled all the dirt off the coils.

After putting it all back together again, it worked fine and has done so ever since.

I have double filters on my unit and change them regularly and that was only the 2nd or 3rd time I've had to clean the coils on the thing since I put it in back in 92.