HVAC Maintenance & Tune-Ups in San Jose, CA
Spring for the AC, fall for the furnace. A 21-point tune-up keeps every system in your San Jose home efficient, safe, and covered by its warranty.
HVAC Maintenance in San Jose & the Bay Area
A San Jose home runs two seasons of equipment on one set of filters, ducts, and thermostats, and each system sits idle for months before it has to perform. A professional HVAC tune-up is a 21-point inspection that gets whatever you own ready for the job ahead. On the cooling side, we clean the condenser coil, verify the refrigerant charge (a sealed system never 'uses up' refrigerant, so a low charge means a leak worth finding), test capacitors and contactors under load, flush the condensate drain, and measure the temperature drop across the coil. On the heating side, we clean the burners, igniter, and flame sensor, inspect the heat exchanger, check the venting, and run a combustion analysis and carbon monoxide safety test. Heat pumps get both sets of checks, plus reversing valve and defrost operation in each mode.
Timing matters as much as the checklist. Book your AC tune-up from March through May, before the first 95°F week, and your furnace tune-up from September through November, before the first cold snap. A heat pump works year-round, so it earns a visit in both seasons. Between visits, the best thing you can do is change the filter: a 1-inch pleated filter every one to three months, a 4–5 inch media filter once or twice a year, and sooner during wildfire smoke season. A tuned system runs on clean coils and the right refrigerant charge, so it moves heat with less strain on the compressor and blower, which means lower bills and fewer breakdowns. It also keeps your paperwork in order, because many manufacturers expect documented annual service for their extended parts warranties, and every visit ends with a dated written report and photos you can keep on file.
Think of it as a maintenance plan that doesn't need a contract. New customers can book the $99 tune-up special for an AC or furnace (per system, not combinable with other offers). Once we have served you, you are a returning customer, and every repair or maintenance visit after that gets 15% off labor. If an inspection turns up a failing part, HVAC Repair prices it before any work starts. Diagnostic fee waived with any repair. If the equipment is at the end of its life, HVAC Installation covers the replacement. Free in-home estimates on new systems and replacements. When airflow or duct leakage is the weak link, HVAC Ductwork handles sealing and replacement. Business owners can ask about maintenance programs under Commercial HVAC and Rooftop Package Units, and if something fails before your appointment, our Emergency page shows what to do and who to call.
HVAC Maintenance: What Every Visit Covers
This is what a technician does on every HVAC maintenance visit: inspect the system, clean the parts that cost you efficiency, and leave you a written report of what we found. Same-day service for no-cool, no-heat and no-hot-water calls, 7 days a week. Most other visits scheduled within 1–2 days. New customers can start with our $99 tune-up special, which covers a 21-point inspection, coil cleaning, a refrigerant check, and a written health report per system.
- Multi-point inspection of components, wiring, and refrigerant charge
- Coil, filter, and drain-line cleaning for peak efficiency
- Written health report so small issues don't become costly breakdowns
What's Included With HVAC Maintenance
Every hvac maintenance 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.
- 21-point inspection for your AC, furnace, or heat pump, with a written report and photos
- Condenser coil cleaning, refrigerant charge check, and capacitor and contactor testing under load
- Burner, igniter, and flame sensor cleaning with a heat exchanger inspection
- Combustion analysis and carbon monoxide safety test on every furnace visit
- Heat pump check in both heating and cooling mode, including reversing valve and defrost operation
- Filter check, thermostat calibration, condensate drain flush, and airflow measurement
Signs You Need HVAC Maintenance
These signs mean the system is overdue for a professional inspection, even if it is still running. Skipping maintenance lets dirty coils, clogged drains, and worn parts quietly cut efficiency and shorten the life of the equipment. Call (669) 777-1997 or book online, and we will inspect, clean, and tune the system before a small problem becomes a breakdown.
- It has been more than 12 months since the last professional tune-up, or you can't remember when it was
- Energy bills are creeping up with no change in how you use the system
- The system takes longer to cool or heat the house than it used to
- Musty or dusty smells at startup, or new rattles and humming from the equipment
- The furnace flame looks yellow or flickering instead of steady blue
- You just bought or moved into the home and don't know the system's service history
Brands We Service
Promax is a Mitsubishi Diamond Contractor and Bryant Factory Authorized Dealer, so Mitsubishi Electric and Bryant equipment is serviced by technicians with factory-backed training. We service the other brands shown here as well, so one team can look after every system in your home. Our trucks carry common parts for these brands, so many small issues found during a visit can be fixed on the spot.
Need HVAC maintenance help in San Jose?
Related Services
Most hvac maintenance 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's the difference between an AC, furnace, and heat pump tune-up?
The 21-point visit is built around the equipment you have. An AC tune-up focuses on the condenser coil, refrigerant charge, capacitors, and condensate drain. A furnace tune-up focuses on the burners, igniter, flame sensor, heat exchanger, venting, and a combustion and carbon monoxide test. A heat pump gets both sets of checks plus the reversing valve and defrost cycle, because it has to perform in both modes. If you have a furnace and an AC, you can book both together.
How often should I have my HVAC system serviced, and when?
At least once a year, timed to the season that matters most: AC from March through May, furnace from September through November. A heat pump runs year-round, so spring and fall visits are the better schedule. Systems older than about 10 years, or ones that run most of the day, benefit from two visits a year because small problems show up sooner.
How much does an HVAC tune-up cost in San Jose, and is there a maintenance plan?
New customers can book our $99 AC or furnace tune-up, priced per system and not combinable with other offers. After that first visit you are a returning customer, and repair and maintenance visits get 15% off labor, which works like a maintenance plan without a long-term contract. Heat pump and mini split tune-ups are priced when you book, and you always hear the number before we start.
Will skipping maintenance void my HVAC warranty?
Not automatically, but many manufacturers ask for proof of regular professional service before they approve an extended parts warranty or a major claim, and the requirements vary by brand. Check your warranty paperwork for the exact wording. Every tune-up ends with a dated written report and photos, which gives you a documented service history to show if a claim ever comes up.
How often should I change my HVAC filter?
Check it monthly. A 1-inch pleated filter usually needs replacing every one to three months, and a 4–5 inch media filter every six to twelve months, depending on pets, dust, and how much the system runs. During wildfire smoke season, check it more often. For most San Jose homes, a MERV-11 to MERV-13 filter balances filtration and airflow.
Does an HVAC tune-up include a carbon monoxide test?
Yes, on every gas furnace visit: we run a combustion analysis, inspect the heat exchanger for cracks, and test for carbon monoxide. Keep working CO alarms near sleeping areas as well. Most alarms need replacing every 5 to 10 years, so check the date printed on the back of yours.