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Eco Energy Bay Area
“Brandon and Walter did an excellent job!”
Best HVAC Contractors in Walnut Creek, CA
24 companies listed · 7 in Walnut Creek · 11 open 24/7 · 20 open weekends · all 24 rated 4.5+
Data verified October 15, 2026
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Eco Performance Builders
- Questions
- Attic
- Insulation
“As an extensively trained real estate broker with eco-broker certification, I really appreciate working with a team that understands the concepts and, for instance, and won't put insulation right up against knob and tube wiring!”
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ATC Mechanical
- Ducts
- Heat Pump
- Price
“The system was 1 year old and the original installer gave me no option but to rip out the duct work and start over costing thousands of dollars and damaging my brand new ADU.”
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Mr Hvac Contractor
“HVAC Contractor they show on time fast and of course there team are very professional and knowledgeable”
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American Mechanical
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Brick & Hammer
“Sean took the time to answer all my questions and nvr made me feel rushed.”
The 24 companies listed for Walnut Creek, CA work on furnaces, heat pumps and air conditioners. Each profile repeats what the company publishes about its hours, its license and the equipment it fits, alongside ratings and quotes drawn from public reviews.
Area overview: Walnut Creek, CA
Of the 24 companies we list here, 7 are in Walnut Creek itself and 17 come from towns including Concord (4, 5 mi), Oakland (3, 12 mi) and Pittsburg (2, 11 mi). The companies on this page are rated from 4.6 to 5.0 across 11,042 reviews; 14 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (88%), responsiveness (81%) and quality (77%). 11 are open around the clock; 18 are open on Saturdays and 16 on Sundays. The services the companies on this page list most often on their websites are indoor air quality (5), heating (4), air conditioning (3), water heaters (3) and AC repair (2). 19 show a license on their websites; 4 list staff certifications (EPA and NATE) and 2 have a BBB rating of A or A+. Domain records put 14 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 11 offer emergency call-outs; 14 offer financing or payment plans; 7 give free estimates; 9 are family- or locally-owned and 12 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Do any heating firms listed for Walnut Creek work on Saturdays or Sundays?
Saturday or Sunday hours show up for 20 of the 24 companies here. Saturdays fill with the calls that came in on Friday, so ask whether you are getting a repair slot or a sales visit. Sunday work is usually treated as an emergency call.
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Redwire Hvac
“John showed up on time and fix it same day and saved our celebration.”
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Yes Appliance Repair Napa
“Good places for shopping”
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Attic Pros
- Debris
- Rats
- Rodent
“He sent me the estimate detailing everything that will be done including the price, their warranty/policy/cancellation agreement and the most important thing; they are insured.”
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Perfect Star Heating and Air Conditioning
- Hvac System
- Duct
- Informative
“After getting at least three bids, we decided to go with Perfect Star Heating and Air for a total replacement of our 20+ year old HVAC system before the heat reached triple digits.”
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Moore Mechanical Heating & Air Conditioning
- Tech
- Job
- Furnace
“He performed the AC maintenance I requested, explaining the work and testing thoroughly, so I could understand what to expect from my HVAC system, which is 24 years old.”
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Green Air Heating and Air Conditioning
- Battery
- Team
- Hvac
“Green Air was timely, clear, estimates and invoicing were clear and accurate, professional, the install and conduit routing is very well done and looks great, and the team members friendly and courteous.”
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Eagle Air
- Duct
- Maintenance
- Job
“I'm super happy dealing with this hvac company And happy I have their support going forward with their maintenance plan just to make sure things don't go awry.”
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Alaska Refrigeration Air Conditioning & Heating Co
- Efficient
- Price
- Diagnosed
“They investigated the problem, were prepared with parts on hand, made the emergency repair, and took the extra steps of cleaning out my unit for optimum performance, all in the same day.”
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Contra Costa Climate Control
- Duct
- Office
- Price
“Javier was on time, polite and very professional checking out my A/C and even checked the filters on my heaters just to make sure that they were clean.”
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Stewart Heating Plumbing and Air
- Morning
- Maintenance
- Furnace
“I've worked with other companies in this area and have experienced some rude and unethical behavior from those other companies but Stewart Heating & Air has impressed me with the way they conduct their business and perform the work.”
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Albert Nahman Plumbing
- Bathtub
- Toilet
- Plumber
“Our relationship with Albert Nahman Services extends over many successful projects, and their unwavering commitment to outstanding customer service is a significant reason we continue to engage their services.”
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Element Home Solutions
- Crawl Space
- Clean
- Insulation
“I had so many dishonest interactions with other companies through our home repair process that it was a breath of fresh air to see that Eduardo and his team were honest, professional and hard working.”
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3rdgen Heating and Cooling
- Mitsubishi
- Priced
- Furnace
“I needed more wires for a thermostat so that I could use fan-only mode (and support the new smart thermostats), so they moved it to a location where new wiring could be threaded to the closet containing the furnace.”
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Hometown Heating and Air Conditioning
- Explanation
- Inspection
- Technician
“He gave options for just replacing the Fan (cheaper option), but also noted that since the furnace was already 13 years old, that it could be replaced as well.”
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Smart Heating and Air Conditioning
- Informative
- Home
- Furnace
“Benito led the installation and testing of the new heater and we now have a new heater installed and functioning within 48 hours of Sam making the service call to our house.”
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JJ Heating and Air Conditioning Co
- Furnace
- Price
- Hvac
“Highly recommend this hometown company that helped us in 17° winter weather after American Home Warranty screwed us over repeatedly & installed items not even up to code.”
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Freschi Air Service Experts
- Inspection
- Maintenance
- Job
“The Service Rep's were timely and explained what was being reviewed to afford me the opportunity to make a sound decision on things that had been recommended.”
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Ariston Heating and Cooling
- Ducts
- Efficient
- Price
“We've worked with them close to 10 times and they are always extremely responsive, have quick turnaround times when they can see you (usually within 24 hours) and have great customer service.”
HVAC, Heating & AC Services in Walnut Creek, CA Cost Estimates
Minimum cost
$1936
Maximum cost
$11599
National Average
$6038
Avg Per Hour Rates
$161
$4145
$8003
Average price range is based on 439 cost profiles
Why these companies made our list
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