Quote:
Originally Posted by retiredguy123
I don't have any maintenance agreement at all. But, annually is not often enough to add vinegar or to flush out the condensate line. I do it every 3 months. I change the filter every 6 months. Those are really the only things you need to do, except to inspect the inside of the air handling unit and the outside coils for dirt or mold. I think it is a waste of money to pay an HVAC technician to come to your house to do anything to a system that is operating properly. They cannot prevent a breakdown. Call a technician when the system fails. Also, don't pay in advance for repair service because you will be stuck with one company who may not be available when you need them.
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Your circumstances may be different, but my condensate line has never been cleaned more than annually and has never presented a problem.