Correct Temp Inc

We have used Correct Temp for about 5 years; they do annual inspections and maintenance on both our furnace and our central AC. The techs that come to the house are professional and neat (we ask them to wear shoe-​booties to keep dirt out) and they always are pleasant and efficient.

I have used them in the past, so I scheduled an appointment for annual boiler service months in advance.
They gave me a 2 hour window (10am –12pm). My wife cancelled plans to make sure she was available during the day of the appointment. At 11:30am I miss two consecutive phone calls while in a meeting. I returned their call at 12:15 to be told my house was skipped over since I did not respond in the 15 minute window they allowed. They were unapologetic stating this is their policy.

Called to have a service tech look at an old system. At first was told that all techs are busy to have someone look at system today — would be an emergency service visit. The temp in the house is over 100 degrees and the humidity is just as bad — mind you it has been this way for a couple days now and I am at my breaking point. I say fine — charge me for an emergency visit and send the tech over. Not 10 minutes later I get a call back saying Oh we were wrong, we have techs available and will send one over as a normal service call. I am thinking great — may want to do business with this company… that was until the tech shows up.
As I figured, the tech said the equipment is old — recommends replacing. He could test to see if there is a leak at a huge sum of $ but no guarantees he can/​will find leak or that he can fix it. Or he can fill the system, but if there is a leak he is not sure how long it will last.
I tell him to go ahead and fill/​charge the system. By the time the tech leaves the system was on but no cold air coming out (exactly as it was prior to his coming and charging me $ 400). Tech leaves system dies — completely dead. I call to have tech sent back — pulls apart thermostats — they are working fine — looks at system again says safety switched tripped — cleans and resets. Again, system on but doesn’t do anything to cool house (again paid $ 400 to be exactly where I was before tech came).
As I sit here and think — well that was a waste of $ 400 and spend an additional sum of $ to get portable a/​c units what do I now notice — the thermostat that was working perfectly fine until the tech looked at it now doesn’t work at all.
So, looks like not only did I pay them to fix a system they didn’t fix, looks like I also paid them to break something that worked perfectly fine until they touched it.

I used Correct Temp recently to get a quote on some HVAC work that I needed done in my house.
The showed up on time, were informative, and helpful in planning my project.
I received my quote via email about 1 week later. The quote was OK, not as detailed as I would have hoped, as I had to email some questions as to what exactly would be covered or not in the quote.
The quote was high, as another company bid lower.
Appears to be a decent company. I would call them again to bid if I had another project.