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

Serving Cupertino, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"My experience with heating and air conditioning repair, replacement, and new installation was excellent. Their staff was amiable, well-informed, and meticulous. Our device is operating more efficiently than before. Really trustworthy service!"
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+24

Response time3 days
10 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for DUKES HEATING & AIR CONDITIONING
DUKES HEATING & AIR CONDITIONING
4.8(
135
)

Serving Cupertino, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Duke did a great job at a fair price. We needed AC and decided to replace our old furnace at the same time. In addition Duke wrapped with insulating bubble wrap our old ducts that were exposed. He tied the drip line into our existing downspout in a neat fashion. I'd highly recommend him (he's a fellow submarine vet too!!)."
Heat Pump Repairs & Installations
Central Air Cut-Ins
Electric Furnace Repairs & Installations
Response time1 day
Response rate100%
27 neighbors recently requested a quote
Avatar for Comfort Energy Inc
Comfort Energy Inc
4.6(
120
)

Serving Cupertino, CA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Air conditioner was blowing ambient air only. Tried to contact my usual HVAC company and they were scheduled out 3 weeks because of the recent heat wave. I called 14 companies to check on availability and Comfort Energy was the only one who had an opening within the week. I confirmed with them and was very pleasantly surprised. They confirmed not only the day and time, but also the exact make, model, ans serial number of the unit to ensure they had all the information they needed. In the meantime, my husband was able to get the unit going by installing a new capacitor himself, which he had done in the past, but wanted to go ahead with the service call so we could have the whole system checked out in case there were other issues. The day before the appointment, I received a text confirming the appointment time. I asked that the service technician call 30 minutes before arrival, which he did. The technician, Nasser Pineda, is a fine representative for his company. He was polite, respectful of both my husband and me, and took time at the start of the service call to go over what he would be doing and how he hoped to provide us with the best service we had ever had. He said that the goal of Comfort Energy was to provide us with service above and beyond expectations. He did not fail us. He even wore booties so that he did not track dirt into the house. My husband followed him around asking questions and he was patient and knowledgeable. Nasser also told us about their yearly service plan which would ensure service checkups before the heat of the summer and for the heater before winter cold months. That, plus the guarantee that we would get priority appointment times even during heavy demand, has clinched our participation. Nasser and Comfort Energy know how to do it right; ensure that the client doesn't want to go anywhere else for their HVAC service."
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+12

Response time1 day
Response rate100%
73 neighbors recently requested a quote
Avatar for Alanis Air HVAC
Alanis Air HVAC
5.0(
18
)

Serving Cupertino, 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%
57 neighbors recently requested a quote
Avatar for Valley Heating, Cooling, Electrical and Solar
Valley Heating, Cooling, Electrical and Solar
4.7(
1,755
)

Serving Cupertino, CA and surrounding areas

Approved

In business since 1962

Free estimates

Emergency services offered

"Steve was in a word, AWESOME. He was punctual, courteous, knowledgeable, he went above and beyond to check out our system and tell us what's going on with the zone heating system. He investigated the furnace, A/C, ducting, venting, and fixed a mis-installed vent, climbed up the ladder to the high vents and attic spaces to check the ducting was sound. He took the time to give me a detailed report and answer my questions, and advice how to maximize the heat. What a work ethic! I couldn't have asked for better service or technical advice. Oh, and that booster fan recommended by the other hvac company at the cost of $1300? Steve informed me that's completely unnecessary and actually works against our goal of heating the house in our case. Anytime I have a heating or AC issue, I'll call Valley and ask for Steve by name. Thanks Steve!"
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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 BAZ Service Refrigeration
BAZ Service Refrigeration
4.9(
16
)

Serving Cupertino, CA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"On the weekend I called a few AC places recommended by Angie's List and HomeAdvisor, BAZ Service was the ONLY picked up the phone and made a suggestion to meet to repair the AC in an hour. Edmon and his assistance came and refilled the r22 Freon when it was emptied within 30 minutes. I checked the thermostat before, while and after Freon refilling, the temperature has dropped and the AC is cool again! Within an hour and serving on the phone and in person, I would strongly recommend BAZ Service per your AC repair needs. Thank you very much BAZ Service and Edmon, the AC is working and cooling the entire house again! :)"
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+8

Response time1 day
Response rate100%
5 neighbors recently requested a quote
Avatar for Aire Serv of Campbell & Saratoga
Aire Serv of Campbell & Saratoga
4.9(
21
)

Serving Cupertino, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1991

Free estimates

Emergency services offered

"Great team. While the job is messy as they have to work under your house. Aire Serv was great to work with. We needed new ducts and boots and my house is now moving air better than it has in twenty years. Highly recommend Aire Serv."
Furnace install
Heat Pump - Condo Install
Heating & A/C Project
Water Heater Replacement
System Swap Out

+58

113 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for Air & Plumbing Systems Inc.
Air & Plumbing Systems Inc.
4.6(
85
)

Serving Cupertino, CA and surrounding areas

Approved

In business since 2006

Free estimates

Offers commercial services

"They responded very quick and they found the problem. The part required was expensive and due to the age of the furnace I decided to purchase a new high efficent furnace. The price was fair and they installed it the next morning."
Response time2 hrs
Response rate93%
4 neighbors recently requested a quote
Avatar for Rittinger Heating and Air
Rittinger Heating and Air
5.0(
18
)

Serving Cupertino, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

*****669-669-2435*****We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business.

Service maintenance
Service maintenance
Service maintenance
Service maintenance
Service maintenance

+2

24 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

No, not all HVAC systems have a fresh air intake, but there are many advantages to having one. For example, a fresh air intake can boost the air quality inside your home and help your furnace run more effectively. Plus, it can make your house more energy efficient, possibly saving you money on your utility costs.

You can protect your air conditioner in the winter by turning off the power at the thermostat and performing routine HVAC maintenance in the spring. Regular maintenance, cleaning, and repair of your AC unit helps protect it and extend its life span. If you have a window AC unit, remove it from the window and store it in a dry place during the winter. Window units cannot withstand freezing temperatures. Keeping them in your window also allows cold air to seep into your home.

You might notice that your air conditioner isn’t running as effectively as it once did. Specifically, your AC unit could take longer to cool your home, or it might struggle to remove humidity from the air. Higher utility bills and hissing sounds coming out of your AC could also indicate a leak.

No, it's not advisable to only replace the outside AC unit connected to your system. AC units are designed to work as a cohesive system, and older units work differently than newer units. Therefore, replacing only one component can lead to incompatibilities that affect the system’s performance. Replacing one component can void your warranty, costing you money for repairs.

Professional HVAC installation requires licensed expertise in several areas, including electrical- and plumbing-related work. An HVAC team must know how to safely handle regulated refrigerant chemicals and the gas, oil, or propane used in furnaces and boilers. A proper HVAC installation protects your home from energy loss, fires, and even carbon monoxide leaks.

The Cupertino, CA homeowners’ guide to air conditioning services

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