Quote:
Originally Posted by Peazoup
I have a mini split in my lanai that needs service. It was installed about 6 years ago and cools and heats perfectly except now it has started to hum intermittently, sometimes hours after the unit has been turned off. I've had one what I believe to be an outrageous estimate to replace the pump. Has anyone had experience with companies servicing these units and can give me a recommendation so I can get another estimate? Thanks for any advice.
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It sounds like you may need a new condensate drain pump located in the inside unit. The pump will run even after the unit is turned off. You can buy one online for about $250, but you would probably need an HVAC technician to install it.