So here’s the nightmare story of a broken A/C unit, what’s wrong with it, and the story as condensed as I can make it…brace yourselves…
3 years ago my A/C broke and we had the condenser replaced. It was very old. The work was performed by a contractor provided to me by my home warranty company. A year later it stopped working, the warranty company sent someone else, and they replaced the coil inside the furnace to make it compatible with the new outdoor unit, something that should have been done originally.
Fast-forward two years. The lines are covered in ice, the coil inside the furnace is a block of ice, and there’s ice all over the lines and middle of the condenser outside. The first tech comes out and says it’s because of poor airflow. He replaces the furnace (also about 25 years old). The A/C runs for a few days, then freezes up again. He comes back and thinks it’s a defective coil. He replaces the coil inside the furnace (even though it’s only about 2 years old). It runs again for 3 days, then the same thing…ice everywhere.
A new tech from a different company comes out next. He says it’s low on Puron refrigerant and a coil outside also has a small leak. He’ll be back soon to replace this coil and add the refrigerant. I asked him if this is what’s causing the unit to ice up, as that’s been the recurring issue over and over again, and I got a bit of a wishy-washy response of, “Well it might be what’s causing that.”
I’m worried he’ll come out, do this small fix, then everything ices up again. Any suggestions on what else could be causing this?