Commercial HVAC Services in San Jose, CA
Keep your tenants, staff, and customers comfortable — installation, replacement, and maintenance programs for commercial buildings across Silicon Valley.
Commercial HVAC in San Jose & the Bay Area
Downtime costs money. Whether you manage a retail storefront on Santana Row, a restaurant kitchen, a dental office, or a light-industrial building, Promax keeps your HVAC running with minimal disruption to business. We install and service rooftop package units, split systems, VRF/VRV multi-zone systems, make-up air, and dedicated server-room cooling across San Jose and Santa Clara County.
Property managers choose us for preventive maintenance contracts — scheduled filter changes, coil cleaning, and inspections that catch failures before tenants feel them — with priority emergency response and consolidated reporting for your portfolio. We handle Title 24 compliance, crane logistics, permits, and after-hours scheduling so your business never has to close for comfort.
Commercial HVAC, Done Right
Here is what our commercial HVAC work covers: system design and installation, repairs on every major brand, seasonal maintenance, and licensed, EPA-certified technicians on every job. Same-day service for no-cool, no-heat and no-hot-water calls, 7 days a week. Free in-home estimates on new systems and replacements.
- Full-system design, sizing, and installation
- Repairs on every major brand, with parts on the truck for most first visits
- Seasonal maintenance that prevents costly breakdowns
- Licensed, EPA-certified technicians for every job
What's Included With Commercial HVAC
Every commercial hvac visit covers the items below, and the scope and price are confirmed in writing before any work starts. When it's finished the technician walks you through what was done and what to watch for. We call back within one business hour, 7 AM – 10 PM.
- Rooftop unit, split system, and VRF installation and service
- Preventive maintenance contracts with priority emergency response
- Title 24 compliance, crane logistics, and permit handling
- After-hours and weekend scheduling to avoid business disruption
Need commercial HVAC help in San Jose?
Related Services
Most commercial hvac jobs touch one of these, and the same licensed Promax team handles all of them. Each page lists what's included, typical costs and the questions San Jose homeowners ask most. Not sure which you need? Call (669) 777-1997 and we'll point you to the right one.
Where We Work
Promax Service Group serves homes and businesses in San Jose, across Santa Clara County, and in nearby Peninsula and East Bay cities. Same-day service for no-cool, no-heat and no-hot-water calls, 7 days a week. Choose your city for local details, or call (669) 777-1997 to confirm we cover your address.
Frequently Asked Questions
Do you offer commercial maintenance contracts?
Yes — quarterly or semi-annual programs sized to your equipment, with documented inspections, priority emergency dispatch, and discounted repair rates. Multi-property portfolios get consolidated scheduling and reporting.
Can you work outside business hours?
Absolutely. We routinely schedule commercial installations and noisy work for early mornings, evenings, or weekends so your business stays open. We're staffed 7 days a week.
What size commercial projects do you take?
From single-unit RTU swaps on a small retail building to multi-floor VRF installations in office buildings. If it heats, cools, or ventilates a commercial space in the South Bay, we can install and maintain it.