AC Installation in San Jose, CA
Ready to upgrade an aging unit or add a new AC to your San Jose home? We size and install the right system for you.
AC Installation in San Jose & the Bay Area
A new air conditioner is only as good as its installation — an oversized or badly ducted system short-cycles, dehumidifies poorly, and dies young. Promax installs central AC and heat pump cooling systems across San Jose the right way: a Manual J load calculation for your actual square footage and sun exposure, matched indoor and outdoor equipment, new refrigerant lines where needed, city permits, and California-required HERS verification.
As a Bryant Factory Authorized Dealer we offer factory-backed equipment at every budget level, from solid single-stage systems to whisper-quiet variable-speed inverters. Financing is available, free estimates always include good/better/best options, and installation is usually complete in one day.
AC Installation, Built to Last
Every AC installation starts with a plan: a system sized to your home, the permits and testing the job requires, and a written quote you can review before you commit. Free in-home estimates on new systems and replacements. If you would rather spread out the cost, financing is available on approved credit.
- Proper load calculation, required permits, and HERS testing on every job
- We check every rebate and incentive you qualify for at your free estimate.
- Your written quote itemizes equipment, labor, permits, and every rebate you qualify for
What's Included With AC Installation
Every ac installation project 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.
- Manual J load calculation for your actual home, not the old nameplate
- Matched indoor and outdoor equipment for rated efficiency
- New refrigerant lines where the old ones don't meet spec
- City permit and California-required HERS verification
- Financing options and a good/better/best written estimate
Signs You Need AC Installation
These signs usually mean your current system is near the end of its useful life, and each repair tends to buy less time than the last. Holding on too long means rising energy bills, repeated service calls, and the risk of an unexpected breakdown. Call (669) 777-1997 or book online, and we will help you weigh repair against replacement.
- Your current AC is 12–15+ years old or needs R-22 refrigerant
- You're adding square footage or finishing a garage/attic space
- Repairs are becoming frequent or increasingly expensive
- You want a quieter, higher-efficiency SEER2 system
Brands We Install
Promax is a Bryant Factory Authorized Dealer, so Bryant equipment is installed by technicians with factory-backed training. We install the other brands shown here as well, and we help you compare them for your home and budget. Every brand here is widely supported, so replacement parts stay easy to find long after the installation.
Need AC installation help in San Jose?
Related Services
Most ac installation 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
What size AC do I need for my house?
Roughly one ton of cooling per 600–1,000 sq ft in San Jose's climate, but insulation, windows, orientation, and duct condition swing that widely. We perform a real load calculation instead of guessing — correct sizing matters more than brand for comfort and longevity.
Should I install an AC or a heat pump?
If your furnace is also aging, a heat pump replaces both for a modest premium and eliminates gas combustion for cooling season — we'll check current rebate and incentive eligibility for you (HEEHRA's single-family funding is fully reserved statewide right now, so we'd add you to the waitlist). If your furnace is newer, a matched AC may make more financial sense. We'll price both in your free estimate.
Does a new AC installation include a permit?
Always. San Jose requires a mechanical permit and HERS testing for AC changeouts, and unpermitted work can bite you at resale. Permit fees and testing are line items in our written quote — never a surprise.
How long does a new AC take to install?
A straightforward changeout with existing, compatible ductwork is usually a one-day job. Adding new line sets, a new electrical disconnect, or duct modifications can extend it to a day and a half — we'll give you a firm timeline in your written estimate.
What SEER2 rating should I choose?
California requires a minimum of 14.3 SEER2 for new central air conditioners. For San Jose's summers, we usually recommend 15.2–17+ SEER2 — the extra efficiency pays back over the system's 15-year-plus lifespan, especially if you run the AC daily in July and August.