Promax Hvac & Plumbing

Promax Hvac & Plumbing handles HVAC work out of Mountain View and serves San Jose plus the wider Bay Area. The crew takes on AC repair and installation, furnace repair and replacement, heat pump and mini split setups, water heater swaps including tankless and heat pump models, plus full system maintenance and ductwork. They run as a licensed contractor open seven days with same day calls for no cool or no heat issues and free estimates on bigger jobs.

Homeowners call them for water heater replacements like swapping a gas unit for a 65 gallon heat pump model where the team used a quad breaker to avoid a full panel upgrade. Other jobs include putting in four indoor Mitsubishi mini split units while removing an old gas furnace and patching walls, plus Navien heat pump water heater installs. Furnace fixes often involve quick response when the system quits, with the crew handling rebates and city inspections as part of the work.

They show up on time, keep the site clean, and stay in touch through texts and calls with a direct name and number each step. Pricing comes in reasonable with clear estimates and help filing rebates. Service covers San Jose and nearby spots like Santa Clara County, and they handle both residential and commercial rooftop or VRF setups with same day options when needed.

Reviews give them top marks for clear communication, professional installs, and handling details like inspections without extra headaches. Recurring notes cover fast response on repairs, neat work on mini splits and water heaters, and solid follow through on rebates. DIRT Score 4.8 from 101 reviews on Finds.

DIRT Score = confidence-weighted rating across verified review platforms. How is this calculated? →

“Five-Star Service! Extremely Professional, Efficient, and Worry-Free! I recently hired Promax Service Group to replace my old gas water heater with a new 65-gallon heat pump unit, and the entire experience was outstanding. Max and Alex were the main installation team on-site, providing top-tier service from start to finish. My main concern initially was my crowded electrical panel. Instead of pushing for an expensive and time-consuming panel upgrade, Albert proactively suggested using a Quad Breaker. This smart, space-saving solution perfectly accommodated the new 240V dedicated circuit while keeping the whole project highly efficient and cost-effective. Their pricing was very reasonable and completely transparent. Furthermore, when I noticed a minor technical mismatch between the invoice model code and the exact nameplate on the machine, Anna from the office immediately stepped in and updated the documentation in minutes to ensure my local SVCE rebate would go through seamlessly. The whole process was smooth, timely, and free of any typical contractor drama. I highly recommend Promax Service Group to anyone looking for premium workmanship and authentic professionalism!”

“I usually don't like to work with structured companies when dealing with my home repairs. But Pro Max is that rare company that is actually there to support the customer, rather than put up a wall between me and the people working on my home. I felt I had the whole team working on my furnace. My furnace was not an easy fix. Response times were very quick.. They were more available than I was.. They were extremely communicative with emails and texts and follow up; always providing a phone number and a name, and always courteous and friendly. I had 5 or 6 phone calls back and forth with Nick one morning with questions and explanations and decisions. And they were truly professional in their craft. When the first part that they replaced did not fix the problem they applied what I had already paid to the cost of the next part and repairs. (Yes, I checked the price from other sources) These are people who really stand behind their work. Thank you, Max, Nick, Anna, and Kostas!”

“They installed Mitsubishi HVAC mini-split system at my home with 4-indoor unit, removed existing gas furnace and patched the wall. They did a wonderful job. They take their work very seriously, paying attention to every minute detail, always on time, keeping everything neat and clean. Also handled the rebate process on timely fashion. I highly recommend them for the quality of service they provide for the price.”

“The Promax team gave me the best estimate for my Navien HPWH. Not only that the team is very good at communicating to ensure that my questions are asked, confirming appointments, and helping with my rebate applications. The team is friendly and did a great job with the installation. They came back to help me with the water heater menu and trying to setup the rebate. I highly recommend Promax for providing excellent service.”

“My experience with ProMax Service Group was excellent. I had a mini split air and heat installed and they provided professional, reliable, and affordable services. There were 4 mini units and main Unit outside. Very transparent, informative with all paperwork including city inspection. Thank you for your service.”