Heating and Cooling Repair for San Jose Homes
CoolVantage HVAC Service repairs and installs air conditioners, furnaces, heat pumps and ductless systems in San Jose and nearby cities including Campbell, Santa Clara, Cupertino, Los Gatos and Milpitas.
- We diagnose the problem and explain what we found before any work begins.
- We lay out your repair and replacement options in plain language and let you choose.
- We confirm current incentive details before including them in a quote.
Services
What we fix and install
Most of our work is fixing heating and cooling systems that have stopped doing their job, from an AC blowing warm air to a furnace that won't stay lit. When a system is due for replacement, we also install central air, gas furnaces, heat pumps and ductless mini-splits. We handle seasonal maintenance, duct cleaning and indoor air quality work too.
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AC Repair
If your AC is blowing warm air, running nonstop, short cycling, leaking, icing up, or making new noises,… -
Heating Repair
If your furnace or heat pump won't start, short-cycles, blows cool air, or makes new noises, schedule a… -
Heat Pump Installation
A heat pump is worth considering when your furnace or air conditioner is failing, struggling, or due for… -
AC Installation
A new AC makes sense when repairs are frequent, the system can't keep your home cool, or you… -
Furnace Repair
If your furnace won't heat, short-cycles, makes new noises, or smells unusual, it likely needs repair, and most… -
Ductless Mini-Split Installation
A ductless mini-split is a good choice when you need heating and cooling in rooms or homes without…
About us
Local HVAC Work Built Around South Bay Homes
CoolVantage HVAC Service works on heating and cooling systems in homes across San Jose and the surrounding South Bay. Most of our days are spent on repairs. That includes an AC that runs but won't cool, a furnace that keeps cycling on and off, a heat pump that ices up, or a system that won't turn on at all. When replacement makes more sense than another repair, we install new air conditioners, furnaces, heat pumps and ductless mini-splits. The Santa Clara Valley has dry summers and mild, damp winters, and that climate shapes how we size and set up equipment. Homes in the hotter inland and southern parts of the valley often need more cooling capacity than homes closer to the Bay. Every visit starts with finding out what's actually wrong. Then we walk you through your options in plain terms, including when a repair is the reasonable choice, and you decide what happens next.
More about how we workService areas
Where we work
We serve homeowners in San Jose and across the South Bay and Peninsula, including Campbell, Los Gatos, Monte Sereno, Saratoga, Cupertino, Santa Clara, Sunnyvale, Mountain View, Los Altos, Milpitas, Fremont and Morgan Hill. Summer heat varies a lot across this area, so we factor in where your home is when we recommend equipment.
What to expect
How a visit goes
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Diagnosis Before Recommendations
We test and inspect the system first, then tell you what's failing and why. You'll know what we found before we suggest any fix.
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Straight Talk on Repair vs. Replace
If a repair will keep your system running well, we'll say so. If replacement is worth considering, we'll explain the reasons, including the equipment's age, its condition and how often it has needed repairs.
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Current Information on Rules and Incentives
Bay Area appliance rules and rebate programs change. We check the current details before your project instead of relying on what was true last year.
Need service? Leave your number — we call back fast.
Do the new Bay Area air quality rules mean I have to replace my gas furnace?
No. The Bay Area Air District appliance rules don't require you to replace working equipment. They apply only when an existing furnace fails or is replaced.
What changes if my furnace needs replacing after 2029?
Under Air District Rule 9-4, natural gas furnaces manufactured from 2029 onward must meet a zero-NOx emission standard. In practice, that points most homeowners toward a heat pump when they replace a furnace after that date. If your furnace is aging, it helps to understand your options before it fails.
Can I still get the federal tax credit for a heat pump?
No, not for new installations. The federal Energy Efficient Home Improvement Credit (25C) covered qualifying heat pumps placed in service before December 31, 2025. It doesn't apply to systems installed after that date.
Are there local incentives for heat pumps?
There may be. Bay Area homeowners can check BayREN and their local clean energy provider for current heat pump and electrification incentives. Amounts and availability change with each funding cycle, so we confirm the current offer before including it in a quote.
I'm also thinking about my water heater. Do the rules affect it?
They might. Rule 9-6 set a zero-NOx date of 2027 for small water heaters. The Air District Board is considering amendments in November 2026 that could push that date back. Check the current rule before you plan a water heater replacement.
How do I know whether to repair or replace my AC?
It depends on the system's age, what's wrong with it, how often it has needed repairs and how well it keeps your home comfortable. We'll go over those factors with you after we diagnose the problem.
Is a ductless mini-split a good fit for my home?
Mini-splits work well for homes without ductwork, for additions and converted garages, and for rooms that stay too hot or too cold on a central system. We'll look at your layout and tell you whether one makes sense.
How often should my HVAC system be maintained?
Most homes benefit from a tune-up once a year, ideally before the season when you'll use the system most. Heat pumps run in both summer and winter, so many homeowners have them checked before each season.
Need Your Heating or Cooling Looked At?
Tell us what your system is doing, or not doing, and we'll schedule a visit to find the cause. We'll explain what we find and go over your options before any work starts.