Air Conditioning Repair & Installation in the South Bay
Fast diagnosis, right-sized installs, and honest pricing on every brand, from the Morgan Hill team that’s cooled the South Bay since 2009.
Licensed & insured, CA CSLB #935704 · All brands · Financing available
We answer 24/7 (408) 497-0444
Request service or a free estimate
Cooling That’s Diagnosed Right and Priced Honestly
When your air conditioner quits during a South Bay heat wave, you want a real answer fast, not a sales pitch. Modern Air sends an experienced technician who finds the actual problem, explains it in plain language, and quotes the fix before any work starts. We’ve been doing it from our Morgan Hill office since 2009, and we bring the same standard whether you’re in a Willow Glen bungalow or a Gilroy ranch home.

Repair, Replacement, and Maintenance
- AC repair, Capacitors, contactors, compressors, refrigerant leaks, frozen coils, blower motors, control boards, and thermostats. We carry common parts on the truck so most repairs are done in one visit; specialty parts are ordered and scheduled fast.
- AC installation & replacement, Right-sized systems matched to your home, not just the size of the old unit. Oversizing wastes money and wears out equipment, so we size it correctly and show you the options.
- AC maintenance & tune-ups, A thorough seasonal inspection that keeps efficiency up and surprises down. Maintenance-plan members get priority scheduling.
Real numbers, not guesses: diagnostics start at $110, most repairs land between $223 and $2,899 parts and labor, and a typical full replacement runs $1,683 to $10,392 installed. Those ranges come from more than 7,000 completed jobs, and you get your exact price in writing before any work begins. Our HVAC cost breakdown shows what pushes a number to either end of those ranges.

We Won’t Sell You a System You Don’t Need
Two companies once told a San Jose homeowner his compressor was dead and the whole system had to go. We took a look and found a failed capacitor, replaced that one part, and the system ran for years until he replaced it on his own schedule. That’s how Modern Air works.
We recommend only what’s needed, never use fear tactics, and our technicians are never paid to upsell. When replacement genuinely is the better long-term move, we’ll show you the math and let you make the call.

Signs Your AC Needs Service
If your system is blowing warm air, short-cycling on and off, leaking water, making new noises, or quietly driving up your energy bills, it’s time to have it looked at. Catching a small issue early almost always beats an emergency call in the middle of August. Right-sizing matters here too, an undersized or poorly ducted system will struggle no matter how new it is, which is why Modern Air looks at the whole picture, not just the box outside.
Quality Work, Backed in Writing
Every installation includes a three-year labor warranty and every repair a two-year labor warranty, on top of the manufacturer’s coverage. Andrew has honored that warranty even after it expired when the issue came down to our craftsmanship, because standing behind the work matters more to him than the date on the paperwork. Free estimates on new systems, upfront repair pricing, financing through Wisetack, and a team that answers when you call, that’s cooling done the Modern Air way.
A Simple, Transparent Process
Call or text us
(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.
All Major HVAC Brands
What South Bay Customers Say
“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 repair“I was a commercial contractor for 40 years, and know a professional worker when I see them work. Billy didn’t waste any time, and found the problem immediately. My new AC people from now on.”
Joe W.Sunnyvale · AC repair“My experience with modern air was wonderful start to finish. Scheduling and keeping track of the appointment is easy via text and email. During the scheduled initial visit for an estimate, our professional, Billy was consultative and down to earth. The estimate was easy to approve via email.”
Rich F.Los Gatos · AC repairFrequently Asked Questions
How much does AC repair cost in the South Bay?
Repair cost depends on the part and the system, so Modern Air gives you upfront pricing after diagnosis, never a guess over the phone. Estimates on full replacements are always free, and financing is available through Wisetack on qualifying work.
Should I repair or replace my air conditioner?
If your system is under about 10 to 12 years old and the repair is minor, fixing it’s usually the smart call. We’ve talked plenty of homeowners out of a needless replacement, sometimes it’s just a capacitor. When a system is old, inefficient, or failing repeatedly, we’ll lay out repair-vs-replace numbers honestly and let you decide.
What AC brands do you service and install?
All major brands, Trane, Lennox, Carrier, Mitsubishi, Daikin, Rheem, Goodman, and American Standard. As a Trane dealer we install equipment we can warranty; we don’t install units bought online, because those manufacturers won’t honor the warranty.
Do you offer same-day AC repair?
Often, yes. We do our best to get a technician out the same day, and no-cool emergencies get priority. Peak cooling season books up fast, so the earlier you call or text 408-497-0444, the better.
What warranty comes with a new AC installation?
New installations carry a three-year labor warranty, and repairs carry a two-year labor warranty, on top of the manufacturer’s equipment warranty. When a problem is our craftsmanship, we stand behind it.
Schedule Your Free Estimate Today
Call, text, or send the form, a local technician gets back to you the same day.
Call or Text (408) 497-0444