add Freon and keep going?
I have a 15 year-old 3 ton Goodman system. It heats and cools fine and my electric bills are reasonable. I was having scheduled maintenance done every 6 months. About two years ago I was told there was a leak in the air handler evaporator coil. He recommended I seriously consider replacing the system and he added 1 lb. R-22. In the next year he added Freon again but didn't seem as concerned about the leak.
I am due maintenance and considering using a different firm to get a fresh opinion. The system I had before this one lasted 22 years before replacement. I am inclined to keep adding Freon as needed until I have to replace this system. By the way, I am in an older townhouse with the duct system pretty unaccessible and there is no attic. That is another reason I am hesitant since duct work might have to be done.
I have been putting off maintenance because I don't want to deal with the pressure to purchase a new system when I'm not sure if it's necessary.