Heating, Air Conditioning, Fridge, HVAC/Central AC Freeze Up
I have a Lennox central AC that is probably over 30 years old. It has frozen up before and replacing the filter has always solved the problem. It froze up again yesterday, so I decided to clean the evaporator coil (I've never done this in the 20 years I've lived here), I changed the filter and I cleaned off the outside unit (It had quite a bit of build up on it).
The unit seems to be working ok now, with better air flow. If all of the cleaning didn't work and there's a bigger problem, do you have any idea how long it will take for it to freeze up again? I guess I'm just wondering when I can consider myself in the clear for having to make a service call :)
Thanks so much for any insight you can give.
Hi Susan, Sorry it took so long to get back to you. I would say you are in the clear. If you change the filter every two month's and wash off the outside coil once a year it shouldn't freeze up again.
The only other way it will freeze up is if the system develops's a leak.