The Bay Area Comfort Team That Does It Right
Promax Service Group is a local, licensed HVAC contractor built on one idea: treat every home like our own, and every customer like a neighbor — because they are.
Local Roots, Factory-Level Expertise
Promax Service Group started in San Jose with a small crew, one van, and a simple frustration: too many homeowners were getting oversold, over-charged, or left waiting for days in an uncomfortable house. We set out to be the company we'd want to call ourselves — honest diagnostics, upfront prices, and technicians who show up when they say they will.
Today we serve hundreds of homes and businesses across Santa Clara County and the Peninsula, and we've earned the industry's top factory credentials: Mitsubishi Diamond Contractor (their highest tier of training and warranty backing), Bryant Factory Authorized Dealer, and Navien Service Specialist. We're EPA-certified and licensed by the state (Lic #1133885).
Founded in 2024 and based in Santa Clara, CA, growth hasn't changed the rules: answer the phone 7 days a week, quote the real price before work starts, and leave every home cleaner — and more comfortable — than we found it.
What We Promise on Every Job
✓ Upfront, flat-rate pricing
You approve the exact price before any work begins. No hourly meters, no surprise line items.
✓ Satisfaction guarantee
If something isn't right after a visit, we come back and make it right — that's the whole policy.
✓ Our own employees, never subs
Every technician in your home is a background-checked, factory-trained Promax employee.
✓ Licensed, bonded & insured
California C-20 contractor Lic #1133885, EPA-certified refrigerant handling, full liability coverage.
✓ Code-compliant, always
Permits pulled, HERS testing scheduled, and inspections passed on every installation — protecting your home's value.
✓ Clean-home promise
Shoe covers, drop cloths, and a full cleanup. You'd never know we were there — except for the comfort.
Certified by the Brands We Install
Factory certifications aren't wall decorations — they mean deeper training, better equipment pricing, and stronger warranties for you.
Our Stages of Work
We keep our service process simple and transparent. Here's how we work with you.
- 01
Request
Contact us with your HVAC concerns. We'll listen carefully and arrange a convenient appointment for a diagnostic visit.
- 02
Technician Visit & Diagnosis
Our certified technician examines your system on-site to identify the root cause of the problem.
- 03
Estimate Provided
You receive a detailed, no-obligation estimate outlining the issue, proposed solution, and associated costs.
- 04
Your Decision
Take your time to review the estimate. If you're happy with it, we move forward — questions welcome anytime.
- 05
Parts & Scheduling
Once approved, we order any necessary parts and schedule the repair at a time that's convenient for you.
Get to know us the easy way — book a free estimate.