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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

"PureAir HVAC Services was incredible! Their technician arrived promptly, worked efficiently, and restored our system in no time. The service was clean, professional, and very reasonably priced. I?m very pleased ? absolutely recommend them for any HVAC repair needs!"
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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 would give them 10 stars if I could. We were facing several technical issues to replace the original HVAC system in our home built in 1977. Angel assessed the job and answered our concerns. His estimate was a little below the average we received from other companies. He asked for no money up front. Other companies wanted close to 40% down. Working with the Ventwerx team was the best. They worked together to solve difficult ducting issues in our 2 story home. They did the work without making any visible cuts of the walls in the living areas of our home. This was not an easy job. It took a crew of 3 to 4 men five days to complete. The team arrived on time. Covered the work areas and spotlessly cleaned up at the end of each day. Their workmanship is clean and professional. The final cost was close to the estimate. Any addition costs were for items we added as the work progressed. The Ventwerx family is welcome in our home."
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

"Iâ  ve been using A-1 for about 5 years, most recently today on my 1-year old house. A-1 has always been excellent in every regard, and I highly recommend them for your HVAC needs in San Jose. They were responsive, timely, and very very thorough in their work and reasonable in their cost."
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

The standard rule for return duct sizing is that the return vent should be the same size or larger than the supply vent. This will ensure balanced airflow in your home and reduce strain on your HVAC system.

On a summer day, expect your AC to run between 12 and 16 hours. However, this time frame depends on just how hot it is outside and the comfortable temperature you’re hoping to maintain indoors. Assuming the size of your AC is appropriate for the space you’re trying to cool, it shouldn’t be a problem for it to work this many hours.

If your home has an existing forced-air heat system, you can add a central air conditioner to it. An HVAC technician can retrofit your forced-air heating system by installing an evaporator coil onto the furnace plenum, the box next to the furnace that draws in air. Once installed, the air conditioning coils use the furnace’s blower to circulate the air.

Because of the improved efficiency, ACs with higher SEER ratings tend to cool down your home better than models with a lower SEER. Higher-SEER AC units have a higher cooling capacity and a lower energy demand, meaning they may help cool your space faster without running up the electricity bill.

A calculation method that your HVAC contractor will use to ensure your system does what it's supposed to is measuring duct output, or its CFM. The calculation requires knowing the cross-sectional area of the ductwork and determining the air speed past any given point within it.

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.