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TRUSTED BY SUNNYVALE, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon505
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Sunnyvale

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

Serving Sunnyvale, 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
9 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for DUKES HEATING & AIR CONDITIONING
DUKES HEATING & AIR CONDITIONING
4.8(
135
)

Serving Sunnyvale, 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 Valley Heating, Cooling, Electrical and Solar
Valley Heating, Cooling, Electrical and Solar
4.7(
1,755
)

Serving Sunnyvale, 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
14 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Comfort Energy Inc
Comfort Energy Inc
4.6(
120
)

Serving Sunnyvale, 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%
77 neighbors recently requested a quote
Avatar for Alanis Air HVAC
Alanis Air HVAC
5.0(
18
)

Serving Sunnyvale, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Warranties offered

"John did an amazing job with our HVAC system! From the moment he arrived, he was professional, knowledgeable, and took the time to explain everything clearly. His workmanship was top-notch, and he made sure everything was working perfectly before he left. It?s hard to find someone who genuinely cares about doing quality work, but John definitely does. If you?re looking for an honest, reliable HVAC contractor who takes pride in what he does, I highly recommend John. I couldn?t be happier with the service!"
York Heat Pump
York 3 Ton heat pump
Coil removal
Condenser Removal
Ductwork

+4

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

Serving Sunnyvale, 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

117 neighbors recently requested a quote
Recommended by57%of homeowners
Capella Heating & Air Conditioning
4.7(
192
)

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 1990

Free estimates

Credit card accepted

"Great job estimating HVAC requirements, as well as a smooth and detailed job with actual installation. John would consistently set up expectations on installation details, noise-levels, arrival and exit times, etc. He is highly professional, very detail-oriented about time taken and strict with timelines. Both my heating and AC work perfectly!"
Response time3 hrs
Recommended by98%of homeowners
Avatar for Rittinger Heating and Air
Rittinger Heating and Air
5.0(
18
)

Serving Sunnyvale, 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

25 neighbors recently requested a quote
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Showing 1-10 of 505
Heating and Air Conditioning questions, answered by experts

If you’re looking for an energy-efficient heating and cooling system to heat a compact to average-sized home, then a ductless system is absolutely worth considering. The installation is less hassle when compared to a ducted heat pump system, and because your electricity bills should drop, it’s an excellent long-term investment.

Window ACs use 500 to 1,400 watts per hour of electricity, while mini-splits use 500 to 700 watts per hour. However, if you need to cool multiple zones in your house, your mini-split can use as much as 2,000 watts per hour. How often you run your system will impact how much electricity you use (and how much you pay per month).

Yes, government incentives and programs are available to encourage energy-efficient upgrades in many regions. These incentives may include tax credits, rebates, grants, and low-interest loans for homeowners who invest in energy-efficient improvements such as HVAC system upgrades, insulation, and efficient windows. The availability and specific details of these incentives can vary by location, so check with your local government or utility company to explore your options.

Though it may seem redundant, you can absolutely have a central AC unit and a window AC in your home. In fact, if you place a window AC unit near your central air, it can help move the cooler air throughout your home. But doubling up on your AC methods can get pricey, so factor in cost accordingly.

Yes, high-efficiency models reduce environmental impact with lower energy use.

The Sunnyvale, 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.