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4.6

(207 reviews)

Top-rated heating and air conditioning pros.

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Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)

Serving Gilroy, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Our annual HVAC inspection went flawlessly. The technician was thorough, friendly, and gave helpful maintenance tips. System is running better than it has in years."
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+24

Response time3 days
10 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Valley Heating, Cooling, Electrical and Solar
Valley Heating, Cooling, Electrical and Solar
4.7(
1,755
)

Serving Gilroy, CA and surrounding areas

Approved

In business since 1962

Free estimates

Emergency services offered

"I first contacted Valley to get a quote on how much it would cost to get air conditioning installed. I live in an older town home that is approximately 1100 sq. ft. They sent someone out to take a look and see what was involved. He was very professional and explained what was involved including getting permits from the city. He quoted the amount and provided me with an invoice. I contacted them 3 months later to say I was ready for the install. The installation turned out to be quite challenging due to the way my home is constructed, but Valley made it work. The service person had to stay a few hours longer but I wasn't charged anything extra for it. They stuck with the amount of the estimate that was quoted. It's only been a couple of months since the install, but I have to say my only complaint at this point is how cold it gets when I turn on the air. But that's a nice problem to have. :)"
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We provide HVAC sheet metal fabrication, blown in insulation with Owens Corning’s new AttiCat™ Expanding Blown-In PINK FIBERGLAS® and Solatube® installations to add light where you need it without the increasing your electric bill.
The SunSource® Home Energy System puts you in control of your monthly bills by creating and using solar energy, reducing your need for electricity from your utility provider.
Owners, Jeff and Cindy Faulkner
13 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Comfort Energy Inc
Comfort Energy Inc
4.6(
120
)

Serving Gilroy, CA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Technician added a new compressor, hand cleaned the air-conditioning system since the vacuum could not be connected to an electrical outlet and recommended other optional services which we are considering.
"
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+12

Response time1 day
62 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Ventwerx, Inc.
Ventwerx, Inc.
4.5(
63
)

Serving Gilroy, CA and surrounding areas

Approved

In business since 2000

Warranties offered

Credit card accepted

"I got a call from them within 2 minutes of requesting a quote. They had a very friendly, competent and quick-working tech at the house within 3 hrs or so, and he had the needed replacement component in his truck. He was in and out in about 30 minutes -- I can't imagine anyone doing the job any quicker/better or less intrusively! My new go-to guys for any future HVAC service needs!"
Ductless Mini Split
Ductless Mini Split Insta
Furnace and AC Install
Furnace and AC Install
Furnace and AC replacement

+4

Response time20 mins
2 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Alanis Air HVAC
Alanis Air HVAC
5.0(
18
)

Serving Gilroy, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Warranties offered

"I found Alanis Air through Angi/Home Advisor because we were having HVAC issues in our new home. Our 4 year old system would turn on for only a few minutes and then stop. I believed it was a wiring issue, but it happened to be a short in the condenser. Alanis Air replaced the parts promptly. I was also concerned that part of our remodeled house could be cooled better.. So after exploring options (i.e. adding a second system, ductwork redesign, adding a mini split ceiling cassette, or wall mount) we decided to go with a Fujitsu wall mount. Alanis Air also carved and framed out an attic access in our closet where the remodelers shouldâ  ve put one but didnâ  t. They patched and painted free of charge and did a great job. I highly recommend them."
York Heat Pump
York 3 Ton heat pump
Coil removal
Condenser Removal
Ductwork

+4

Response time3 hrs
Response rate99%
43 neighbors recently requested a quote
Avatar for Aire Serv of Campbell & Saratoga
Aire Serv of Campbell & Saratoga
4.9(
21
)

Serving Gilroy, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1991

Free estimates

Emergency services offered

"Alton was great and very knowledgeable. He was very patient and helpful. Hands down best hvac service in town. Marco was also very professional and punctual when arriving to the appointment. 5 stars!!"
Furnace install
Heat Pump - Condo Install
Heating & A/C Project
Water Heater Replacement
System Swap Out

+58

115 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for Rittinger Heating and Air
Rittinger Heating and Air
5.0(
18
)

Serving Gilroy, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Rittinger responded quickly. Alan, the tradesman they sent over was professional and quick. I hired them to install a clothes dryer vent and to open up a vent in my garage for the hot water heater. The work was high quality and installation was clean."
Service maintenance
Service maintenance
Service maintenance
Service maintenance
Service maintenance

+2

26 neighbors recently requested a quote
Avatar for Ace Mechanical
Ace Mechanical
4.9(
20
)

Serving Gilroy, CA and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

Ace Mechanical provides excellent quality HVAC work for both residential and commercial properties and makes sure that all of his clients have their expectations met. Raul handles customer communications and will always make sure to leave his clients with the best service possible.

Response time7 hrs
13 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for A-1 Heating and Cooling, Inc.
A-1 Heating and Cooling, Inc.
4.2(
125
)

Serving Gilroy, CA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"I had a recent experience with A-1 Heating & Cooling and I have to say they bring their A-game to any job they plan to do. I took 3 months to hire them, and they were very persistent and worked with my budget, which made me feel like they really cared about fulfilling my needs and care to get my business. Work was done as discussed, timing was on point. Goal was to get an AC installed and move the heater up to the attic. It took them 3 days to finish this job, but there was no interruption in the hallway, everything was kept clean, and it was done in a very honest and respectful manner. I highly recommend this pro, and also want to give a shout-out to Hyman Kang, who was eager to convince me to choose them. Thank you!"
CLEANER AIR
COMFORT THAT LASTS
Response time2 days
43 neighbors recently requested a quote
Recommended by87%of homeowners
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Heating and Air Conditioning questions, answered by experts

While an air conditioner can temporarily run with a dirty filter, it is not recommended as it will not work efficiently. A dirty filter forces the system to work harder to circulate cool air, leading to reduced airflow, increased wear and tear, and higher energy bills. This added strain can cause the air conditioner to overheat or fail prematurely. Furthermore, a clogged filter may allow dust and dirt to accumulate in your ductwork, negatively impacting air quality. It is more cost-effective to clean or replace filters regularly than to pay higher utility bills and risk needing to replace the entire AC unit.

For washable or electrostatic air conditioner filters, you can soak and rinse them with water. If you rinse the filter with water, make sure to use a faucet, shower head, or garden hose with a gentle water pressure setting, as strong water pressure could damage the filter.

But for disposable filters, water could ruin the filter, even allowing mold to grow in the filter. Instead, these filters should be replaced.

You will only need to refill your AC with refrigerant if it has a leak. Otherwise, a modern, well-maintained AC will most likely never need a recharge. You may notice a leak in an older system if your bills are higher, you hear a hissing sound, or if the air is blowing out hot.

If your HVAC system's capacity doesn't match the required CFM (Cubic Feet per Minute), imbalances can occur. An undersized system struggles to maintain desired temperatures, leading to discomfort. An oversized system might short-cycle, wasting energy and causing temperature fluctuations. Properly matching capacity to CFM ensures efficient and consistent heating, cooling, and home ventilation system performance.

You should know the main components of an air conditioner: the condenser coils, evaporator coils, drip pan, AC filter, ducts, and refrigerant. Each part plays a key role in the performance and safety of your AC system. When tracking the source of AC issues or odors, it helps to know where to look. Your outdoor unit houses your condenser coils, fan, and compressor. Your indoor unit houses your evaporator coils, drain lines, and filter, and it connects to your ductwork. 

The Gilroy, CA homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.