AC Repair and Heating in Gilroy, CA
Modern Air, the family-run HVAC company from Morgan Hill, repairs and installs ACs, furnaces, and heat pumps for Gilroy homes. We’ve kept the South Bay comfortable since 2009.
Licensed & insured, CA CSLB #935704 · All brands · Financing available
We answer 24/7 (408) 497-0444
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HVAC in Gilroy, Just Up the Road From Us
Gilroy is 13 miles from our Church Street shop in Morgan Hill, about 15 minutes down US-101, and we treat it as home turf. When your air conditioning gives out in a Gilroy heat wave, you’re not waiting on a van dispatched from the far side of San Jose. A local tech can often be there the same day, and no-cool emergencies get priority on the schedule.
We’ve worked Garlic Capital homes and businesses since 2009, from the historic blocks around Old City Hall to Eagle Ridge on the west side and the ranches out toward Rucker. Different parts of Gilroy fail in different ways, and knowing which neighborhood you’re calling from usually tells us half the story before we arrive.
Gilroy Heat Is Its Own Problem
Here’s a number most contractors up the valley never design for: the state energy code assigns Gilroy a 93°F cooling design temperature, 7 degrees hotter than San Jose’s 86°F, with extreme-day sizing at 101°F. Federal climate records back it up, Gilroy averages about 745 cooling degree days a year against San Jose’s 525, roughly 42% more cooling load, and the city’s all-time record is 115°F. Gilroy even gets the colder end of winter, with a 23°F design low.
That gap is why a bid copied from a San Jose spec sheet fails here. An undersized unit runs flat out and never wins an August afternoon, an oversized one short-cycles and dies young. Add the dry, dusty heat rolling off the surrounding farmland, which loads filters and coils faster than in any leafy suburb, and Gilroy systems need honest sizing and a real maintenance rhythm more than anywhere else we work.
Old Gilroy and the East Side
The city’s own housing data says what our techs see every week: Gilroy’s oldest homes sit downtown and on the east side. More than a third of Gilroy’s housing predates 1980, over 2,100 homes predate 1960, and close to 800 go back before 1940. In those houses we find gravity-furnace retrofits, undersized returns, ducts from two furnaces ago, and additions that never got their own airflow.
If you’re searching for AC repair in Old Gilroy, that history is exactly why your system behaves the way it does. We diagnose the whole system, not just the unit that quit, because in a pre-1960 house the equipment is often fine and the ductwork is the real problem. Repairs get upfront pricing after the diagnosis, and replacement estimates are free.
Eagle Ridge, Glen Loma, and the West Side
The west and southwest sides are a different animal: Eagle Ridge and the newer Glen Loma neighborhoods went up mostly from the late 1990s onward, which means a wave of builder-grade systems is now hitting the 15-to-20-year mark more or less street by street. When one neighbor’s condenser dies, the same-vintage units nearby usually aren’t far behind.
That’s not a sales pitch, it’s a planning tip. If your system is original to the house, a tune-up tells you honestly how much life is left, and replacing on your schedule beats replacing during a July heat wave. Larger two-story floor plans up the hill also benefit from zoning and right-sized returns, which we check as part of any estimate.
Rucker and North Gilroy
North of the city line, Rucker and the properties along Monterey Road and the Uvas Creek side are unincorporated Santa Clara County, so building permits run through the County, not Gilroy City Hall. We pull permits with both offices weekly, so the paperwork difference costs you nothing.
The homes out here live a rural life: bigger parcels, long duct runs, wells with electric pumps, and full-day sun with farmland dust on the wind. We size and service equipment for that reality, and we’re 10 minutes away when something quits.
Rebates and Permits in Gilroy
Gilroy is a Silicon Valley Clean Energy community, and that matters when a system gets replaced. As of mid-2026, SVCE pays a $2,000 rebate when a heat pump replaces a gas furnace, and $3,000 for income-qualified households. Incentive programs open and close as funding moves, so we confirm what’s active the week we quote, and we handle the application paperwork.
Every changeout in Gilroy city limits is permitted through the City of Gilroy Building Division and brought up to California’s Title 24 energy code, with the inspection scheduled for you. Rucker-side properties go through the County of Santa Clara instead, and we handle that too.
Honest Work, Clear Pricing
- Repairs start with a diagnosis, then you get the price upfront before any work begins.
- Replacement estimates are free, with straight answers on whether repair or replacement actually makes more sense.
- Wisetack financing is available when a big job shouldn’t wait.
- All brands serviced, from the 1990s survivor to last year’s heat pump.
Modern Air has been Gilroy’s neighbor since 2009, and almost 400 reviews across Google and Yelp say we treat it that way. Call (408) 497-0444 to schedule service in Gilroy. Licensed, insured, CA CSLB #935704.
A Simple, Transparent Process in Gilroy
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(408) 497-0444, or send the form and we reach out the same day.
Same-day diagnosis
A local, background-checked tech finds the problem and quotes it upfront.
Fixed right, guaranteed
Clear pricing before work starts. Financing if you need it.
Local Facts That Shape Your HVAC Job
Gilroy has the hottest official design conditions in Modern Air’s service area: the state energy code sizes systems here for a 93°F cooling design day versus 86°F in San Jose, and the city’s all-time record is 115°F.
California Title 24 energy code applies to all HVAC installs and changeouts in Gilroy.
City of Gilroy Building Division
As an SVCE community, Gilroy homes can claim a $2,000 heat-pump rebate when replacing a gas furnace, $3,000 income-qualified, as of mid-2026. Incentives change, so we verify what’s active before you sign anything.
About 13 miles south via US-101, roughly 15 minutes from our Morgan Hill office.
Same-day diagnosis across Gilroy, every day.
Complete HVAC Service in Gilroy
Trusted Across the South Bay
“So prompt and helpful! We are so relieved that our furnace problem was fixed with a new thermostat!”
Connie R.Gilroy · Thermostat installation“Very responsive, timely, professional and friendly. I will call them with any HVAC issues”
Dennis S.Gilroy · HVAC service“Excellent service. Billy was such a professional and handled my AC maintenance with precision and friendliness. Modern Air is my go to Hearing and Air Conditioning company.”
Marsha B.Gilroy · AC repairNeed an HVAC Tech in Gilroy Today?
Call or text Modern Air, a local technician gets back to you the same day.
Call or Text (408) 497-0444
Why Gilroy Homeowners Choose Modern Air
Modern Air is a licensed California HVAC contractor (CSLB #935704) based on Church Street in Morgan Hill, About 13 miles south via US-101, roughly 15 minutes from our Morgan Hill office. Our technicians know Gilroy’s neighborhoods, its permit process through the City of Gilroy Building Division, and the rebates that can cut the cost of a high-efficiency upgrade. That local knowledge means faster service and fewer surprises.
Gilroy HVAC Questions, Answered
How fast can Modern Air get to Gilroy?
Our shop is on Church Street in Morgan Hill, about 13 miles and 15 minutes up US-101, so same-day service in Gilroy is often possible. Peak summer books up fast, so call early in the day and no-cool emergencies get priority.
Why does my AC struggle in Gilroy heat?
Gilroy runs measurably hotter than the rest of the county. The state energy code sizes Gilroy systems for a 93°F design day versus 86°F in San Jose, and federal climate records give Gilroy about 42% more annual cooling load than San Jose. A unit sized for a milder city, or one aging past 14 years, simply can’t keep up here, and farmland dust loading the coil makes it worse.
Do you service homes in Old Gilroy and the east side?
Yes, and they’re some of our most common calls. The east side has the oldest housing in the city, with thousands of Gilroy homes dating to before 1960. Undersized returns, tired ducts, and furnaces past their design life are the usual suspects, and we quote repairs upfront after a diagnosis.
What rebates can Gilroy homeowners get on a heat pump?
Gilroy is a Silicon Valley Clean Energy community, and as of mid-2026 SVCE pays a $2,000 rebate when a heat pump replaces a gas furnace, or $3,000 for income-qualified households. Programs open and close, so we check what’s active when we quote and handle the paperwork and the Title 24 permit.
Do you cover Rucker and the rural area north of Gilroy?
Yes. Rucker and the ranch properties along the Monterey Road corridor are unincorporated, so permits run through the County of Santa Clara instead of Gilroy City Hall. We work under both offices weekly and handle the difference for you.
Are you licensed to work in Gilroy?
Yes. Modern Air holds CA CSLB #935704, fully insured, and has served the South Valley from neighboring Morgan Hill since 2009.
Nearby Areas We Serve
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