As an agent, I can confirm from a cost perspective. Plenty of exceptions like most good HVAC companies advertise. Generally those type of plumbing and electrical companies are not ripping people off ,rather, they are just repairing more than what is needed. Examples: Michael and Sons & JES are notorious for this. Generally most of these companies are honest just expensive.

I know only 2 large HVAC in this area who have good reviews but are actually very sketchy. Reviews are a poor way to measure these companies honesty or workmanship.

For example, ones with good reviews are often when are made people to feel special. They might fix something for 1/2 the cost of another company and the person thinks they were just being nice.

What that reviewer does not realize, is they probably did not repair what they said. Or they might have charged the manufacturer the cost for parts and not tell the client.

I won’t say the bad ones but I will confirm the good ones.