FeaturedVerifiedHVAC Companies in Santa Clara, California

Promax Service Group

Featured in Santa Clara Today 5.00 (76 reviews)(669) 777-1997

Promax Service Group was founded in Santa Clara in 2024. It provides heating and air-conditioning repair, installation and maintenance across San Jose and Santa Clara County, with cold-climate hyper-heat systems among its heat-pump offerings.

Show all 8 photos

Business Highlights

Promax lists California C-20 HVAC license #1133885.
Promax describes its technicians as EPA-certified.
Promax lists itself as a Mitsubishi Diamond Contractor, Bryant Factory Authorized Dealer and Navien Service Specialist.
Promax says it is licensed, bonded and insured.
The company says its technicians are background-checked, factory-trained employees.
Promax describes a satisfaction guarantee: it says it returns after a visit to make things right.
Promax says parts-and-labor warranty coverage applies to every repair and installation.
Promax says customers approve an exact price before work begins.

Service Area

San Jose, Atherton, Belmont, Campbell, Cupertino, Fremont, Los Altos, Los Gatos, Milpitas, Mountain View, Palo Alto, Redwood City, San Mateo, Santa Clara, Saratoga and Sunnyvale.

Featured on ProsGrade. Promax Service Group is one of 7 HVAC companies ProsGrade lists in Santa Clara, California.

Listing details

8 services listed, including HVAC systems, Air conditioning and Furnaces. Open 7 days a week. Rated 5.0 from 76 reviews.

Verified listing details
Service information
Customer review signals
Photo gallery
Public contact information
Published local profile

How This Business Compares

How Promax Service Group compares with the other 6 HVAC companies on ProsGrade in Santa Clara, using public Google ratings and review counts.

Ranks in the top half of the 7 Santa Clara HVAC companies on ProsGrade by Google rating and review volume.
Rated 5.0 on Google, at or above the 5.0 average of other Santa Clara HVAC companies on ProsGrade.
One of 7 Santa Clara HVAC companies on ProsGrade rated 4.7 or higher from at least 10 reviews.

Services Covered

8 services

HVAC systemsduct sealing; smart thermostat upgrades
Air conditioningsame-day repairs; high-efficiency installations; seasonal tune-ups
Furnacesgas and electric brands; Bryant systems
Heat pumpsducted and ductless; single-room mini splits to whole-home all-electric conversions
Water heaterstraditional tank, tankless and heat-pump models
Ductless split systemsup to eight indoor zones per outdoor unit; wall-mount, ceiling-cassette or floor-console heads
VRF/VRV systemsMitsubishi CITY MULTI and Daikin VRV; branch controllers and heat-recovery piping
Rooftop package units

Reviews

What customers say

Reviewers praise quick responses, clear communication and professional installation work. One homeowner says a central HVAC replacement was installed within two days; another with a difficult furnace repair appreciated that the amount already paid was applied toward the next part and repairs.

Customer Reviews

Vikram Saxena

I worked with ProMax to replace our central HVAC system. My experience with the ProMax team was exceptional. What stood out was their willingness to work with me to design a system that fits our needs, as well as their promptness, professional behavior and speed of execution. Our project involved removing the existing ducting from the crawlspace and adding new ducts in the attic along with a new Mitsubishi heat-pump-based central AC+Heat system. While other vendors said that we may be without heat for 3-5 days, the Promax team worked overtime to install the replacement within two days. Slava was also very patient while we were designing our system, sharing multiple choices, incorporating our feedback, and answering a ton of questions. Our household is very happy with the new system, and I strongly recommend Promax for your HVAC needs.

View full reviewShow less

Mary Nice

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!

View full reviewShow less

Howard Chong

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.

View full reviewShow less

Write a Review

Share your experience with this business. Reviews are moderated before they appear publicly.

Frequently Asked Questions

How does Promax handle a repair visit?

A technician diagnoses the system on site and provides a detailed estimate. After approval, Promax orders needed parts and schedules the repair.

How long does an HVAC replacement take?

A straightforward furnace or AC changeout usually takes one day. A full replacement involving new ductwork or a furnace-to-heat-pump conversion typically takes two to three days.