HVAC Repair and Installation for San Jose Homes
MasterFix HVAC Repair Service repairs, installs, and maintains heating and cooling systems in San Jose and nearby cities including Campbell, Santa Clara, Sunnyvale, Cupertino, and Los Gatos.
Services
What we fix and install
We work on the systems that keep your home comfortable year-round, from air conditioners and furnaces to heat pumps and ductless mini-splits. Whether you need a repair, a new installation, routine maintenance, or help with dust and air quality, here is what we do.
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AC Repair
If your AC is blowing warm air, short cycling, freezing up, leaking water, or making new noises, it needs a diagnosis. MasterFix technicians check the electrical parts, refrigerant, airflow, and drainage. We… -
Heating Repair
If your heater is blowing cold air, cycling on and off, making new noises, or leaving rooms uneven, it likely needs repair. A MasterFix technician inspects the whole system, explains whether a… -
Heat Pump Installation
A heat pump is worth considering when your furnace or AC is aging, failing, or due for replacement, and the South Bay's mild winters suit heat pumps well. We inspect your home,… -
AC Installation
A new AC makes sense when your system struggles on hot days, needs frequent or major repairs, uses phased-out R-22 refrigerant, or your home has no central cooling. We measure your home,… -
Furnace Repair
If your furnace blows cool air, cycles on and off, makes new noises, or won't light, it likely needs repair. Most problems, such as a failed ignitor, flame sensor, or blower part,… -
Ductless Mini-Split Installation
A ductless mini-split makes sense when you have no ductwork, a room the central system can't keep comfortable, or an addition that needs its own heating and cooling. We size each indoor…
- We explain what we found before any repair work begins.
- When both repair and replacement are reasonable, we lay out the options and let you choose.
- Emergency service is available 24/7.
Service areas
Where we work
We serve homeowners throughout San Jose and nearby South Bay and Peninsula communities. If your city is listed below, we can help with repairs, installations, and maintenance.
- CampbellLocal service & repairs
- Los GatosLocal service & repairs
- Santa ClaraLocal service & repairs
- Monte SerenoLocal service & repairs
- SaratogaLocal service & repairs
- CupertinoLocal service & repairs
- SunnyvaleLocal service & repairs
- MilpitasLocal service & repairs
- Los AltosLocal service & repairs
- Mountain ViewLocal service & repairs
- FremontLocal service & repairs
- Los Altos HillsLocal service & repairs
About us
Heating and Cooling Service Built Around South Bay Homes
MasterFix HVAC Repair Service works on heating and cooling systems in homes across San Jose and the surrounding South Bay. The Santa Clara Valley has dry summers and mild, damp winters, and inland and southern neighborhoods get noticeably hotter in summer than areas near the Bay. That means air conditioners here often work hardest in late summer, while furnaces and heat pumps see lighter but steady use through the cooler months. We repair and install central air, furnaces, heat pumps, and ductless mini-splits. We also handle the maintenance, duct cleaning, and indoor air quality work that keeps those systems running well. When something breaks, our technicians start by finding the actual cause. Then they walk you through what they found and what your options are. If a repair makes sense, we say so. If replacement is worth considering, we explain why and let you decide. Emergency service is available 24/7 for the times your system quits at night or on a weekend.
More about how we workWhat to expect
How a visit goes
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Diagnose First, Then Recommend
We find the cause of the problem before suggesting a fix. You get a plain explanation of what is wrong and what it will take to correct it.
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Straight Answers on Repair vs. Replace
Some systems are worth fixing and some are near the end of their life. We give you an honest read on your equipment so you can make the call that fits your home and budget.
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Clear Information on Rules and Incentives
Bay Area appliance rules and electrification incentives change over time. We explain how current rules apply to your situation and confirm any incentive offer before including it in a quote.
FAQ
Common questions
Do you offer emergency HVAC service?
Yes. We offer 24/7 emergency service for heating and cooling breakdowns, including nights and weekends.
Do I have to replace my gas furnace because of the new Bay Area Air District rules?
No. The Air District appliance rules do not require you to replace equipment that is working. They apply only when an existing furnace or water heater fails or is replaced.
What does the 2029 furnace rule mean for me?
Under Bay Area Air District Rule 9-4, natural gas furnaces manufactured from 2029 must meet a zero-NOx emission standard. In practice, that points homeowners toward heat pumps when they replace a furnace after that date. If your furnace is aging, it can help to think about your options before it fails.
Can I still get the federal tax credit for a heat pump?
The federal Energy Efficient Home Improvement Credit (25C) covered qualifying heat pumps placed in service before December 31, 2025. It is not available for new installations after that date.
Are there any local incentives for heat pumps?
Bay Area homeowners can check BayREN and their local clean energy provider for current heat pump and electrification incentives. Amounts and availability change by funding cycle, so we confirm the current offer before including it in a quote.
When should I schedule AC maintenance?
Spring is a good time, before the hottest part of summer. Inland and southern parts of the Santa Clara Valley run noticeably hotter than areas near the Bay, so air conditioners there tend to work hardest in summer and benefit from a check-up beforehand.
Is a ductless mini-split a good option for my home?
Ductless mini-splits work well for homes without ductwork, for additions and converted garages, and for rooms that stay too hot or too cold. We can look at your layout and tell you whether a mini-split, a ducted heat pump, or another option makes more sense.
Should I replace my water heater now because of the Air District rules?
The zero-NOx date for small water heaters under Rule 9-6 was set for 2027. The Air District Board is considering amendments in November 2026 that could delay it. Check the current rule before planning a water heater replacement.
Need Heating or Cooling Help?
Whether your AC stopped cooling, your furnace won't start, or you're planning a heat pump installation, MasterFix HVAC Repair Service can help. Contact us to schedule service. For breakdowns that can't wait, emergency service is available 24/7.