Precision Air & Heating is literally the worst. Do NOT, under any circumstance, let these folks into your home.
I had a 4 year preventative maintenance agreement with Precision. My 2 A/C units were running great but I had a "free" PM call to use. Bad mistake. The Precision tech inspected both units and the air handlers and said everything was running well, but suggested we get the evaporator coils cleaned, which we did, and paid for. Literally 30 minutes after he left, our "running well" system showed a red light "COOLING SYSTEM FAILURE". I shut down the unit and Precision said they'd send someone out the next day.
A new technician inspected the check/warning signal and the unit. In the middle of his inspection and diagnosis, he said a fuse had just blown and there was a "complicated" wiring system that now needed repair.
Once he fixed these two problems (which apparently did not exist the previous day and/or were not identified by the previous technician), he pointed out that the upstairs unit was (suddenly, after their initial service) performing poorly (a split of only 7 degrees and a lukewarm coil). He said the previous technician's judgment or assessment of the splits was wrong and suggested that the unit needed freon, quoted me a price, which I agreed to, and then added the freon.
Imagine my surprise when he handed me a bill for rewiring a "complicated" board and replacing a fuse that were fully operational before he came to my house!!! I felt I had no option but to pay him to get him about $300 to get him out of my house.
I called Precision. No response. I called again, and they asked me to send a letter. I did. No response. That's it, I'm done.
As I see it, the first tech made errors and/or damaged the fully-functional system, and the 2nd tech made more mistakes (and charged me for them) in trying to correct them. If the 1st tech did not make mistakes, then why did these never-before-seen problems occur immediately after he left? If the splits were bad yesterday, why did he not catch it? Why was I charged to fix the damage done by the 2nd tech who tried to diagnose and correct the problem? I was charged for their shoddy & destructive work.
Both techs sold me hard on re-upping my soon-to-expire PMA. In fact, the 2nd tech quoted me a even higher price than the 1st tech did a week earlier. I guess they just make up these numbers as they go... Crazy.
More amazing is that the 2nd tech continued to push the new PMA after I expressed my extreme dissatisfaction at his service and my disbelief at being billed for their mistakes.
I don't want anything from Precision, I just want to let people know that nobody should let this company do ANYTHING to your cooling & heating system.