Many HVAC failures are caused by a blockage of your condensate drain line. This can occur in less than a year, especially if insects, a snake, or other animals get into the drain, which is wide open and exposed on the outside of your house. Mold and other debris can also block the drain.

I would suggest buying a "Drain King 345" on Amazon for $11.90 to flush out your condensate drain. You just connect it to a garden hose and stick it into your condensate pipe inside your air handling cabinet. Much more effective than adding vinegar or hot water.

Munn's was the original installer of our AC, we stayed with them and they have been exceptional to deal with. We also purchased a washable filter and clean that frequently. We also follow Munn's instructions for flushing the drainage pipe.

Many years ago we lost our AC one night during an electrical storm that took out our power. We called them and they sent an emergency crew to the house and got our AC running.

I do believe that any of the companies mentioned on this posting are very good, if you are not good you don't last too long in TV.

I appreciate the suggestion, and they did suggestion I check it periodically - pour a gallon of water down it. The causes you suggest could happen and result in a. 100^ blockage in 24 hours. So doing it every 6 months is not enough. In fact, he suggested we pour a gallon down the drain every month. So, we put it on our schedule - about 2 1/2 minutes total. I can do that too.

Jeff Cabral at (352) 559-9558. Great job at reasonable price. He has a twice a year service plan that includes a clothes dryer vent cleaning!

Okay here's the scoop on the AC maintenance, DeSantis andMunns are both too highly rated reputable companies. If you use the one inch filters you should change them every one to two months it takes minutes and they cost just a few dollars depending on the mirv rating from several reliable blogs it appears you need mirv of 8-11. 11 will remove virtually all pollen and dust particles and is at least 50% better than eight but of course more expensive. The other thing you should do at least wasley is make sure the water drain pipe is cleaned with vinegar or a light solution of bleach / water followed by a flush of your hose. If you have the thick 4-inch filters some of them are washable and others may need to be replaced 3 - 6 months

Weuse Munns, and are happy with them. Two visits a year.

What does "wasley" mean?

Milking TV-ers
 

I was thinking exactly the same thing. Change the filter, pour the vinegar down the condensate drain and check the coils. Takes about 5-10 mins total.
I think a lot of these companies make big bucks (in total, do the math) doing very little on "maintenance". It's like they either use fear and uncertainty to get TV-ers to pony up for maintenance contracts, in the hope they get some piece of mind. I agree with you, no way for them to prevent or anticipate a break down. This is life, things can and do break, no matter how much we would like to prevent it.

Filters are not cheap for the houses with carrier south of 44. My house is 2 years old. They aren’t standard and cost approx 50 each cartridge type

Those filters only need to be changed once per year.

Weekly

Try ACE Hardware for a brand called Flanders. They also sell several other brands and they know which ones will fit the Carrier units. I think the Flanders filters are about $18 for the 16x20x4 inch size and about $32 for the 19x20x4 inch. Those nominal sizes will fit most Carrier units in The Villages.

Flushing the drain with a hose is a good idea, but most condensate drains do not have a hose connection. The "Drain King 345", sold on Amazon, allows you to screw it onto a hose and push the rubber end directly into the condensate pipe. Very easy.

Your circumstances may be different, but my condensate line has never been cleaned more than annually and has never presented a problem.