Golden State Comfort Systems

Mark & Greg, each have 30+ years of experience and are the best price in town! Look no where else! These HVAC professionals can handle any job and will do it right. I got multiple quotes in the Fairfield/Vacaville area and they were the best price. They replaced my evaporator coil, pressure tested my lines, vacuumed my lines, and added refrigerant. Couldn't be more happy with the service they provided. Better than the big HVAC names in town!

Mark and Greg are fantastic. Professional, knowledgable, communicative, patient, and punctual. I highly recommend them for any HVAC work.

It started when my wife and I bought a new home in Fairfield and wanted to upgrade the 35 year old Honeywell thermostats to something digital/modern. I found the high ratings for Golden State Comfort Systems and called them up. They were at the house the next day. They did an inspection of the gas furnaces and AC units, explained they were functional but also 35 years old and likely to go out some day soon, but were otherwise functional. They topped up the refrigerant in the AC units without being asked and didn't charge us anything for it.

I had these poor guys come over to the house three times to figure out why the new thermostat was rebooting constantly. We eventually came to the conclusion that the furnace powering the thermostat was tripping off and on and likely needed to be replaced. My wife and I thought about replacing the gas furnace but, with gas prices where they are, considered a heat pump. And with another furnace and 2 AC units also 35 years old, we went ahead and jumped on a full system replacement. Mark and Greg were immediately the chosen contractors. 2 hard days of work and we couldn't be happier.

We went from a $150 thermostat to a full system replacement. Mark and Greg were never pushy, they were clear about options, patient, and we felt like we made the right decision because of their consultation.

Outstanding work, guys, thank you.

Both of the guys (Paco and Mark I believe) were extremely professional and polite, they kept both my spouse and I informed and updated throughout their visit. They arrived early and quickly diagnosed that a different contractor company incorrectly wired our AC unit into a new furnace and got our system back up and running in less than 20 minutes. With this heat not going anywhere they were exactly who and what we needed, thanks again!

Greg and Mark are amazing. My 23 year old AC decided to die during a heatwave 3 weeks ago. I reached out via Yelp and talked to Mark and Greg came out same day. Great communication via text.

Super nice local Fairfield folks. VERY honest not trying to upsell me more expensive units and telling me what I really don't need and do.

Took 1 1/2 days to do a full install of a new furnace and AC unit with testing. Fair price but mostly just cool guys who do great work and are easy to work with. HIGHLY recommend them. Thanks gents!

Wow! These guys are amazing!
They came out to check out our cooler and it was too far gone, we new it was only a matter of time for our old system. So we had them put in a new Heating and cooling System. They helped us to select the right one for us.
I was totally amazed by their ability to think outside the box. And a bonus, the air conditioner is as pretty as a new car.
Lol. They were very personal and professional. Hard to find qualities now days. I would recommend them to everyone I know!