We've used P.K. Wadsworth for a couple of years for clean-and-checks. They came out this year and told us our compressor was about to break, plus we needed a chemical cleaning of the outside of our a/c and a bacterial cleaning of the inside. Would cost nearly $4000. Since the unit was 12 years old, they suggested we consider just replacing it. After some run-around, the estimator finally came out and and gave us estimates for two options, around $6,500-$7000. We decided to get another couple of estimates, and when I explained what we were told to a local company (the owner came out), he said "that doesn't sound right". He asked if he could get his tools and take a look at the unit. After checking it out, he told us there was nothing wrong with the compressor and we could clean the outside with a hose. He did note a couple of things that had been screwed up in prior years (left the caps off the refrigerant valve, put the wrong capacitor(?) in) and said we should top off the refrigerant. Should cost about $250. Looks like we have a new HVAC company.