1. Thermostat replacement. Charged $130 for service call, where he diagnosed a faulty thermostat in about 1 minute. Charged $98 for the replacement thermostat. 2. A/C repair Didn't really want to work on A/C at the beginning of winter, asked me to delay it to accommodate other customers' urgent heating repairs. I was agreeable. Finally they diagnosed leaking evaporator coils and replaced those. I think the part costs around $500 and it was 1/2 day work for 2 people, including redoing the rain lines, flushing the lines, "filter dryer"(?), and 10lb new refrigerant, total $1895, which they didn't itemize on the invoice. Hidden inside the manual for the compressor was instructions for registering for the extended warranty. I didn't notice it; they didn't point it out. It still didn't work, and they were good about allowing me to defer payment until they could identify the next problem a couple of weeks later, a bad low pressure cutoff valve. They replaced that, and didn't charge me for it because it still wasn't working, and they think water got into the compressor unit, because of the leaky coils, which has to be completely replaced. (I think that could have been figured out earlier and they shouldn't have sold me the new refrigerant, which probably has to be flushed out and discarded.) At that point I paid for the work already done, but it's still not working. They promised a quote on the new compressor, but never got it. Called to remind them, and again they didn't follow up. Now, 2 months later, I'm giving up and looking for a different company to finish the repair.