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Thermostat installers and replacers in Walnut Creek

Avatar for Ease HVAC

Ease HVAC

2421 21st Avenue
4.83(
23
)
Approved Pro

Ease HVAC

2421 21st Avenue
4.83(
23
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
16 years of experience

We are a small business with low overhead so we can pass the savings on to our homeowners. We work diligently to complete all service calls by offering evening hours throughout the week to fit your scheduling needs. With our many years of experience, you can feel comfortable that your heating and air needs are in good hands. Call us today to get your estimate on your next project!

"Amr was most professional & knowledgeable. He should be rewarded financially & considered to become a CEO for your company! He'd be excellent because he has started from the bottom. He has earned his way to the top! Millicent Mc Cormack 81 David Drive Moraga, CA 94556"

Millicent M on January 2021

We are a small business with low overhead so we can pass the savings on to our homeowners. We work diligently to complete all service calls by offering evening hours throughout the week to fit your scheduling needs. With our many years of experience, you can feel comfortable that your heating and air needs are in good hands. Call us today to get your estimate on your next project!

"Amr was most professional & knowledgeable. He should be rewarded financially & considered to become a CEO for your company! He'd be excellent because he has started from the bottom. He has earned his way to the top! Millicent Mc Cormack 81 David Drive Moraga, CA 94556"

Millicent M on January 2021


Avatar for Perfect Star Heating and Air Conditioning

Perfect Star Heating and Air Conditioning

4415 Cowell Road
4.91(
247
)
Approved Pro

Perfect Star Heating and Air Conditioning

4415 Cowell Road
4.91(
247
)
Approved Pro
Super Service Award
Customers say: Quick response
942 local quotes requested
9 years of experience

With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.

"Gio was an excellent service tech. He was knowledgeable, personable, and courteous. He solved all the issues with my A/C efficiently and cheerfully. We have used Perfect Star before and Gio reflected their excellence"

Olivia B on September 2025

With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.

"Gio was an excellent service tech. He was knowledgeable, personable, and courteous. He solved all the issues with my A/C efficiently and cheerfully. We have used Perfect Star before and Gio reflected their excellence"

Olivia B on September 2025


Avatar for Livermore Mechanical, Inc.

Livermore Mechanical, Inc.

PO Box 2706
4.70(
23
)
Approved Pro

Livermore Mechanical, Inc.

PO Box 2706
4.70(
23
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 years of experience

Livermore Mechanical, Inc. is a Union Shop specializing in Residential and Commercial HVAC Service and Installs. We can handle any project or problem, large or small. Over the years, we have built our reputation on communication, honesty, integrity & quality of craftsmanship. We always strive for perfection & we get the job done right the first time. Call today to schedule a consultation!

"Great response time. They were able to replace parts the very next day. Oz was the tech, he was very professional and thorough. Megan was a delight to talk to and assure our needs were met.We highly recommend Livermore Mechanical"

Diane M on January 2021

Livermore Mechanical, Inc. is a Union Shop specializing in Residential and Commercial HVAC Service and Installs. We can handle any project or problem, large or small. Over the years, we have built our reputation on communication, honesty, integrity & quality of craftsmanship. We always strive for perfection & we get the job done right the first time. Call today to schedule a consultation!

"Great response time. They were able to replace parts the very next day. Oz was the tech, he was very professional and thorough. Megan was a delight to talk to and assure our needs were met.We highly recommend Livermore Mechanical"

Diane M on January 2021


Avatar for Golden Bay Electric

Golden Bay Electric

111 Poppy Ct
4.91(
27
)
Approved Pro

Golden Bay Electric

111 Poppy Ct
4.91(
27
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
4 years of experience

Golden Bay Electric is dedicated to providing our customers with the best quality work and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations.

"Job was quoted so quickly and was onsite within 90 minutes. I have rarely received such quick service for a small job. Electrician was courteous, clean and professional. No price gouging with this company, they will now be my go to all my electrical needs going forward. Thanks Golden Bay Electric!"

Steve C on March 2025

Golden Bay Electric is dedicated to providing our customers with the best quality work and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations.

"Job was quoted so quickly and was onsite within 90 minutes. I have rarely received such quick service for a small job. Electrician was courteous, clean and professional. No price gouging with this company, they will now be my go to all my electrical needs going forward. Thanks Golden Bay Electric!"

Steve C on March 2025


Avatar for Tyndall HVAC, Inc.

Tyndall HVAC, Inc.

2825 Mayflower Drive
4.62(
91
)
Approved Pro

Tyndall HVAC, Inc.

2825 Mayflower Drive
4.62(
91
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
10 local quotes requested

Tyndall HVAC is founded on principles of quality and integrity, boasting an impressive legacy that spans over 25 years. At the heart of our operations lies a steadfast commitment to excellence, a guiding principle that influences every aspect of our service, from the initial consultation to the finalization of each project. Our primary goal is to enhance homeowners' and business proprietors' living and working environments, ensuring their comfort and satisfaction. We pride ourselves on our transparent and fair pricing model, which features a flat-rate system to eliminate the possibility of unforeseen expenses. At Tyndall HVAC, we offer complimentary, no-obligation proposals for new installations, affirming our position as a trusted and reliable partner in HVAC solutions.

"My AC stopped working last November, and since then i had 4 contractors i called to fix it, i was turned down by everyone. i called Tyndall and peter came out and talked about it with me, actually troubleshot it, and 2 days later had parts and fixed it. i would give them 6 stars if i could. im so glad to have my ac running again. my recommendation, if you want something done, call Tyndall, because the rest of the contractors seem to just say its not fixable and leave without even looking at it. these guys were the first people that listened, then looked at the unit before declining service, and then actually fixed it. 10/10 great job and thank you."

Saabi A on June 2025

Tyndall HVAC is founded on principles of quality and integrity, boasting an impressive legacy that spans over 25 years. At the heart of our operations lies a steadfast commitment to excellence, a guiding principle that influences every aspect of our service, from the initial consultation to the finalization of each project. Our primary goal is to enhance homeowners' and business proprietors' living and working environments, ensuring their comfort and satisfaction. We pride ourselves on our transparent and fair pricing model, which features a flat-rate system to eliminate the possibility of unforeseen expenses. At Tyndall HVAC, we offer complimentary, no-obligation proposals for new installations, affirming our position as a trusted and reliable partner in HVAC solutions.

"My AC stopped working last November, and since then i had 4 contractors i called to fix it, i was turned down by everyone. i called Tyndall and peter came out and talked about it with me, actually troubleshot it, and 2 days later had parts and fixed it. i would give them 6 stars if i could. im so glad to have my ac running again. my recommendation, if you want something done, call Tyndall, because the rest of the contractors seem to just say its not fixable and leave without even looking at it. these guys were the first people that listened, then looked at the unit before declining service, and then actually fixed it. 10/10 great job and thank you."

Saabi A on June 2025


Jim's Air Systems

4.38(
8
)
Approved Pro

Jim's Air Systems

4.38(
8
)
Approved Pro
461 local quotes requested
47 years of experience

We are a family owned and operated Heating and Air conditioning and solar contractor in the Bay Area for the past 40 years. We specialize in Residential, Commercial, and New Construction installation. We pride ourselves in quality workmanship and fast reliable service at a fair price. We will not price gouge you like the big companies do. Call us for a free estimate, ask for Josh. 925-584-2634

"Josh got on this very quick and quoted the best price with good brand day and night carry"

jianyu d on November 2024

We are a family owned and operated Heating and Air conditioning and solar contractor in the Bay Area for the past 40 years. We specialize in Residential, Commercial, and New Construction installation. We pride ourselves in quality workmanship and fast reliable service at a fair price. We will not price gouge you like the big companies do. Call us for a free estimate, ask for Josh. 925-584-2634

"Josh got on this very quick and quoted the best price with good brand day and night carry"

jianyu d on November 2024


Avatar for Albert Nahman Plumbing, Heating, and Cooling

Albert Nahman Plumbing, Heating, and Cooling

3333 Martin Luther King Jr Way
4.45(
687
)
Approved Pro

Albert Nahman Plumbing, Heating, and Cooling

3333 Martin Luther King Jr Way
4.45(
687
)
Approved Pro
Customers say: Super punctual
2600 local quotes requested
44 years of experience

Albert Nahman Services was founded in 1981 and has been serving Berkeley, CA and it surrounding areas in all their plumbing and HVAC needs. Each of our technicians went through rigorous training so we can guarantee that you will be receiving the proper service. We are also insured and supply a warranty for our parts for five years and up to twenty years on an re-piping or sewer replacement. Call us now to make your appointment!

"The plumbing technicians came out as promised to assess the leak. They were both very courteous and kind and assessed the damage. I am giving three stars because they estimated the cost to be almost 250% higher than what the actual cost was to fix the issue. I am sure there are customers out there that would just accept any bid however, please get multiple beds for these projects, especially when working with this company as they will inflate the cost to take advantage of the situation. I ended up only paying for the $79 estimate."

Kevin C on September 2025

Albert Nahman Services was founded in 1981 and has been serving Berkeley, CA and it surrounding areas in all their plumbing and HVAC needs. Each of our technicians went through rigorous training so we can guarantee that you will be receiving the proper service. We are also insured and supply a warranty for our parts for five years and up to twenty years on an re-piping or sewer replacement. Call us now to make your appointment!

"The plumbing technicians came out as promised to assess the leak. They were both very courteous and kind and assessed the damage. I am giving three stars because they estimated the cost to be almost 250% higher than what the actual cost was to fix the issue. I am sure there are customers out there that would just accept any bid however, please get multiple beds for these projects, especially when working with this company as they will inflate the cost to take advantage of the situation. I ended up only paying for the $79 estimate."

Kevin C on September 2025


Avatar for Aire Serv of Campbell & Saratoga

Aire Serv of Campbell & Saratoga

5.00(
8
)
Approved Pro

Aire Serv of Campbell & Saratoga

5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1428 local quotes requested

Looking for reliable Heating & A/C services in the SAN FRANCISCO BAY area? Look no further than Aire Serv of Campbell & Saratoga. Our team of experts is here to assist you with all your heating and A/C needs. With our exceptional service and attention to detail, we are dedicated to providing the best solutions for all your needs. Contact us today!

"Venice the technician was friendly and was able to quickly diagnose the problem which was the hose that connected to the pump broke and it looked pretty old. Since we couldn’t just replace the connector to the hose, getting a new part was the best choice."

Ed U on June 2025

Looking for reliable Heating & A/C services in the SAN FRANCISCO BAY area? Look no further than Aire Serv of Campbell & Saratoga. Our team of experts is here to assist you with all your heating and A/C needs. With our exceptional service and attention to detail, we are dedicated to providing the best solutions for all your needs. Contact us today!

"Venice the technician was friendly and was able to quickly diagnose the problem which was the hose that connected to the pump broke and it looked pretty old. Since we couldn’t just replace the connector to the hose, getting a new part was the best choice."

Ed U on June 2025


Avatar for Big Air Heating & Air Conditioning Inc

Big Air Heating & Air Conditioning Inc

1000 Detroit Ave
4.71(
14
)
Approved Pro

Big Air Heating & Air Conditioning Inc

1000 Detroit Ave
4.71(
14
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
467 local quotes requested

Contact Big Air at (925) 687-7942 for installation of energy-efficient heating and air conditioning equipment. We install most brands including Trane, Rheem and Fujitsu. Call us today for your free in-home estimate.

"In the same day as my initial call , they sent a technician. She was very informative, professional, and very empathetic to my budget and needs. The estimate was free and the quotes were reasonable. The next day, my ducting was replaced. Thank you One hour. I will definitely recommend to all my friends and family."

Kandyce F on January 2018

Contact Big Air at (925) 687-7942 for installation of energy-efficient heating and air conditioning equipment. We install most brands including Trane, Rheem and Fujitsu. Call us today for your free in-home estimate.

"In the same day as my initial call , they sent a technician. She was very informative, professional, and very empathetic to my budget and needs. The estimate was free and the quotes were reasonable. The next day, my ducting was replaced. Thank you One hour. I will definitely recommend to all my friends and family."

Kandyce F on January 2018


Avatar for Tyndall HVAC Inc.

Tyndall HVAC Inc.

.
4.36(
22
)
Approved Pro

Tyndall HVAC Inc.

.
4.36(
22
)
Approved Pro
Customers say: Super punctual
417 local quotes requested
21 years of experience

Tyndall HVAC is founded on principles of quality and integrity, boasting an impressive legacy that spans over 25 years. At the heart of our operations lies a steadfast commitment to excellence, a guiding principle that influences every aspect of our service, from the initial consultation to the finalization of each project. Our primary goal is to enhance homeowners' and business proprietors' living and working environments, ensuring their utmost comfort and satisfaction. We pride ourselves on our transparent and fair pricing model, which features a flat-rate system to eliminate the possibility of unforeseen expenses. At Tyndall HVAC, we offer complimentary, no-obligation proposals for new installations, affirming our position as a trusted and reliable partner in HVAC solutions.

"still thinking about getting the work done"

Janice B on August 2020

Tyndall HVAC is founded on principles of quality and integrity, boasting an impressive legacy that spans over 25 years. At the heart of our operations lies a steadfast commitment to excellence, a guiding principle that influences every aspect of our service, from the initial consultation to the finalization of each project. Our primary goal is to enhance homeowners' and business proprietors' living and working environments, ensuring their utmost comfort and satisfaction. We pride ourselves on our transparent and fair pricing model, which features a flat-rate system to eliminate the possibility of unforeseen expenses. At Tyndall HVAC, we offer complimentary, no-obligation proposals for new installations, affirming our position as a trusted and reliable partner in HVAC solutions.

"still thinking about getting the work done"

Janice B on August 2020

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Showing 1-10 of 977
FAQs for thermostat installation and replacement projects in Walnut Creek, CA

Smart thermostats may be worth it for many homeowners. They come with various features, including voice control and smartphone apps. Vacation mode can help lower energy usage when you’re out of town for an extended period. Alert warnings let you know about major spikes or drops in temperature. Smartphone apps can track energy usage, and smart thermostats can learn your routine over time to adjust your temperature and reduce wasted energy consumption automatically.

You typically do not need more than one smart thermostat. While it’s common to see multiple mechanical thermostats throughout a large home, multiple smart thermostats may try to override each other. This can lead to problems with the HVAC system. Ensure the unit you buy has the option for dual- or multi-zoned systems to avoid compatibility issues.

Installing a programmable or smart thermostat may save you $180 per year in utility costs. A big part of this comes from a smart thermostat’s ability to learn and adapt to your regular routines. With smartphone apps or web-based interfaces, you also have the option to control your thermostat when you’re not home.

The Walnut Creek, CA homeowners’ guide to thermostat installations and replacements

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

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