My "residential" 7 ton system (both ac and heating) is newly replaced about 2.5 years ago with Ruud units. The outside unit (condensor) is 7 ton that is matched with two (2) 3.5 ton inside units. The line iced up all the way to the outside condenser recently. Called in my ac guy who said all is well except that there are leak(s) in the outside condensor copper lines. We saw oil-like patches and spills near the base and close to the compressor... Any how, he offered 3 options and I need to know which is the best fix (assuming he is right about the leak being the cause):
1. Use a "No Leak" chemical to seal the leak
2. Finding and soldering the leak(s) in the condenser]
3. replace the whole condenser unit
It is 3 weeks without the AC, and AC huy just kept on delaying the fix...
Thank you so much for any input!