I have known Greg and Mark at Golden State Comfort Systems for many years. They're members of my business networking group as well. Greg and Mark are very knowledgeable and extremely thorough on the job. They sell Trane systems, which sell themselves. Greg and Mark have tremendous customer service and are a delight to work with. I highly recommend them for HVAC installation and repair!
May 2026
Greg and his team were absolutely fantastic to work with from start to finish. In my experience, what really makes people choose an HVAC company comes down to trust, communication, honesty, pricing, and confidence that the job is going to be done right the first time — and Greg checks every one of those boxes. He’s incredibly knowledgeable, experienced, responsive, and easy to communicate with. You can immediately tell you’re dealing with someone who truly understands HVAC systems and has spent years mastering the trade. What I appreciated most was how honest and straightforward he was throughout the process. No pressure, no upselling, no trying to sell... read full review
May 2025
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!
I have known Greg and Mark at Golden State Comfort Systems for many years. They're members of my business networking group as well. Greg and Mark are very knowledgeable and extremely thorough on the job. They sell Trane systems, which sell themselves. Greg and Mark have tremendous customer service and are a delight to work with. I highly recommend them for HVAC installation and repair!
Greg and his team were absolutely fantastic to work with from start to finish. In my experience, what really makes people choose an HVAC company comes down to trust, communication, honesty, pricing, and confidence that the job is going to be done right the first time — and Greg checks every one of those boxes.
He’s incredibly knowledgeable, experienced, responsive, and easy to communicate with. You can immediately tell you’re dealing with someone who truly understands HVAC systems and has spent years mastering the trade. What I appreciated most was how honest and straightforward he was throughout the process. No pressure, no upselling, no trying to sell... read full review
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!