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Thermostat installers and replacers in Hayward

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
4.90(
235
)
Approved Pro
Perfect Star Heating and Air Conditioning
4415 Cowell Road
4.90(
235
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
360 local quotes requested

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.

"5 star service!!! A crew of 3 arrived, Brandon H, Nestor C and Anthony A. They did an excellent job and very hard workers. I am thrilled with their professionalism, hot tips and work ethic. Will definitely recommend them!! Thank you again!!!"

Lisa V on May 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.

"5 star service!!! A crew of 3 arrived, Brandon H, Nestor C and Anthony A. They did an excellent job and very hard workers. I am thrilled with their professionalism, hot tips and work ethic. Will definitely recommend them!! Thank you again!!!"

Lisa V on May 2025


Avatar for MDP Heating & Cooling Inc.
MDP Heating & Cooling Inc.
124 Rancho Dr Apt 219
5.00(
4
)
Approved Pro
MDP Heating & Cooling Inc.
124 Rancho Dr Apt 219
5.00(
4
)
Approved Pro
Customers say: Quick response
36 local quotes requested
11 years of experience

At MDP, we pride ourselves on our commitment to transparency, affordability, and exceptional customer service. Our certified technicians ensure every project is completed with the utmost professionalism and care, keeping your comfort and satisfaction as our top priorities. 📞 Contact us at (669) 400-6792 📧 Email: accounting@mdphvac.com 💻 Website: https://mdpheatingcooling.com/ 📜 California License #1103720. Our services include: ✅ Furnace and heat pump diagnostics and repairs ✅ Duct cleaning ✅ Expert HVAC system installation and maintenance ✅ Thermostat installation and optimization ✅ Free second opinions on previous HVAC estimates

"Project done."

Perry C on May 2025

At MDP, we pride ourselves on our commitment to transparency, affordability, and exceptional customer service. Our certified technicians ensure every project is completed with the utmost professionalism and care, keeping your comfort and satisfaction as our top priorities. 📞 Contact us at (669) 400-6792 📧 Email: accounting@mdphvac.com 💻 Website: https://mdpheatingcooling.com/ 📜 California License #1103720. Our services include: ✅ Furnace and heat pump diagnostics and repairs ✅ Duct cleaning ✅ Expert HVAC system installation and maintenance ✅ Thermostat installation and optimization ✅ Free second opinions on previous HVAC estimates

"Project done."

Perry C on May 2025


Avatar for Tyndall HVAC, Inc.
Tyndall HVAC, Inc.
2825 Mayflower Drive
4.61(
90
)
Approved Pro
Tyndall HVAC, Inc.
2825 Mayflower Drive
4.61(
90
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
17 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.

"Peter was easy to work with, accommodating of our time, and professional. His team was courteous, competent, and friendly. The installation went well. I couldn't be happier!"

Edward H on May 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.

"Peter was easy to work with, accommodating of our time, and professional. His team was courteous, competent, and friendly. The installation went well. I couldn't be happier!"

Edward H on May 2025


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 Duarte Artemio HVAC
Duarte Artemio HVAC
Located In:
5.00(
4
)
Approved Pro
Duarte Artemio HVAC
Located In:
5.00(
4
)
Approved Pro
Super Service Award
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1089 local quotes requested

We specialize in all phases of heating and cooling services, installs, repairs, maintenance, and more. We pride ourselves on the quality work we provide, while delivering great customer service. Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Service was great. We had to replace the upstairs ac unit. I heard of his awesome reputation as hvac from a friend. Gave him a call, he came as soon as possible,replaced what needed to be fix. Next you know I'm chilling inside my house with ac blasting cool air. Thanks for your services."

Jerry n on August 2024

We specialize in all phases of heating and cooling services, installs, repairs, maintenance, and more. We pride ourselves on the quality work we provide, while delivering great customer service. Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Service was great. We had to replace the upstairs ac unit. I heard of his awesome reputation as hvac from a friend. Gave him a call, he came as soon as possible,replaced what needed to be fix. Next you know I'm chilling inside my house with ac blasting cool air. Thanks for your services."

Jerry n on August 2024


Avatar for JZ HVAC Contractor
JZ HVAC Contractor
1460 Sequoia Avenue
5.00(
3
)
Approved Pro
JZ HVAC Contractor
1460 Sequoia Avenue
5.00(
3
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1 years of experience

Welcome to JZ HVAC Contractor, JZ HVAC Contractor has established itself as a trusted provider of heating, ventilation, and air conditioning solutions in the Bay Area, California. Our experienced team is committed to delivering top-notch services, including installation, repair, and maintenance for both residential and commercial clients. At JZ HVAC Contractor, we pride ourselves on our expertise, reliability, and customer satisfaction, ensuring your indoor environment is comfortable and energy-efficient all year round. Whether you need a quick repair or a comprehensive HVAC system upgrade, you can count on JZ HVAC CONTRACTOR to meet all your heating and cooling needs.

"Joy did excellent work: removed my old ducts and replaced them and added additional vents. He communicated well and was friendly and helpful. I highly recommend him!"

Kelly H on October 2024

Welcome to JZ HVAC Contractor, JZ HVAC Contractor has established itself as a trusted provider of heating, ventilation, and air conditioning solutions in the Bay Area, California. Our experienced team is committed to delivering top-notch services, including installation, repair, and maintenance for both residential and commercial clients. At JZ HVAC Contractor, we pride ourselves on our expertise, reliability, and customer satisfaction, ensuring your indoor environment is comfortable and energy-efficient all year round. Whether you need a quick repair or a comprehensive HVAC system upgrade, you can count on JZ HVAC CONTRACTOR to meet all your heating and cooling needs.

"Joy did excellent work: removed my old ducts and replaced them and added additional vents. He communicated well and was friendly and helpful. I highly recommend him!"

Kelly H on October 2024


Avatar for Comfort Energy Inc
Comfort Energy Inc
1465 N Milpitas Blvd
4.60(
116
)
Approved Pro
Comfort Energy Inc
1465 N Milpitas Blvd
4.60(
116
)
Approved Pro
Customers say: Quick response
910 local quotes requested
22 years of experience

Message from the Owner/ Founder: “As a third generation heating and air technician and retired 20 year veteran of fire and public safety, I wanted to create a service company that you could count on for its integrity and professionalism. When our service technicians arrive at your home, we want you to feel the same level of confidence and trust you get from a firefighter arriving at your home to help when you call 911. Our service technicians are professional, courteous, and well trained. I am comfortable allowing them into the homes of my families and friends who are firefighters, police officers and the public. Thank you for the opportunity to service your comfort needs and believing in our company. We look forward to a continued long relationship. Warm regards, Harry Abbott” Comfort Energy Inc is a full service provider of quality air conditioning and heating repair and installation. . Locally owned and operated, with over 30 years of experience. We are proud members of the Nexstar network of contractors. We specialize in helping homeowners make informed decisions to best meet your family's comfort needs. Spanish and Japanese spoken.

"We had a wonderful experience with Comfort Energy! The service person, whose name was Chance, did a thorough evaluation of the problem with a focus on saving us as much money as possible, to either repair or replace our 30-year-old heat furnace. He quickly determined that our inlet filter was too dense (it was a Merv 11 and should have been a Merv 8) and that that was probably causing the heater to go off an on every 5-10 minutes. He then tested and confirmed his hypothesis. He also performed a CO test to make sure there wasn't anything more serious going on. Finally, he gave us a good idea of replacement options, which we should probably do before the next Winter, but not necessarily right away. All in all, this is exactly the kind of assessment we needed, and it cost orders of magnitude less than what was estimated by the first service company we had come out. Chance was great, and Comfort Energy is our go-to for heating and cooling service and/or installation from now on."

Gary S on April 2025

Message from the Owner/ Founder: “As a third generation heating and air technician and retired 20 year veteran of fire and public safety, I wanted to create a service company that you could count on for its integrity and professionalism. When our service technicians arrive at your home, we want you to feel the same level of confidence and trust you get from a firefighter arriving at your home to help when you call 911. Our service technicians are professional, courteous, and well trained. I am comfortable allowing them into the homes of my families and friends who are firefighters, police officers and the public. Thank you for the opportunity to service your comfort needs and believing in our company. We look forward to a continued long relationship. Warm regards, Harry Abbott” Comfort Energy Inc is a full service provider of quality air conditioning and heating repair and installation. . Locally owned and operated, with over 30 years of experience. We are proud members of the Nexstar network of contractors. We specialize in helping homeowners make informed decisions to best meet your family's comfort needs. Spanish and Japanese spoken.

"We had a wonderful experience with Comfort Energy! The service person, whose name was Chance, did a thorough evaluation of the problem with a focus on saving us as much money as possible, to either repair or replace our 30-year-old heat furnace. He quickly determined that our inlet filter was too dense (it was a Merv 11 and should have been a Merv 8) and that that was probably causing the heater to go off an on every 5-10 minutes. He then tested and confirmed his hypothesis. He also performed a CO test to make sure there wasn't anything more serious going on. Finally, he gave us a good idea of replacement options, which we should probably do before the next Winter, but not necessarily right away. All in all, this is exactly the kind of assessment we needed, and it cost orders of magnitude less than what was estimated by the first service company we had come out. Chance was great, and Comfort Energy is our go-to for heating and cooling service and/or installation from now on."

Gary S on April 2025


Avatar for Bell Brothers Plumbing Heating & Air
Bell Brothers Plumbing Heating & Air
3266 Investment Blvd
4.66(
387
)
Approved Pro
Bell Brothers Plumbing Heating & Air
3266 Investment Blvd
4.66(
387
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
1899 local quotes requested

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"Called this company for their $77 dollar, which they advertised with a flyer, for a tune-up and cleaning for my heating system. They are a Hayward company and I was told that our Castro Valley home was not in their service area. I bet if I called to buy a new heater they would be out in a day."

Gregory O on March 2023

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"Called this company for their $77 dollar, which they advertised with a flyer, for a tune-up and cleaning for my heating system. They are a Hayward company and I was told that our Castro Valley home was not in their service area. I bet if I called to buy a new heater they would be out in a day."

Gregory O on March 2023


Avatar for DUKES HEATING & AIR CONDITIONING
DUKES HEATING & AIR CONDITIONING
36601 Newark Blvd
4.78(
134
)
Approved Pro
DUKES HEATING & AIR CONDITIONING
36601 Newark Blvd
4.78(
134
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1330 local quotes requested

Dukes Heating & Air Conditioning is in HVAC business for 37 years now and continuously remains on the top of the industry. We do this by providing honesty and good workmanship that our customers love the most. We- Dukes Heating & Air Conditioning , also make sure that we have the latest technology that enables us to be more competitive & expert in the field and stand behind any work we have performed. Our in-house employees are all professionally trained and deliver only excellence to whatever project they work on.

"Great service"

Noah H on October 2023

Dukes Heating & Air Conditioning is in HVAC business for 37 years now and continuously remains on the top of the industry. We do this by providing honesty and good workmanship that our customers love the most. We- Dukes Heating & Air Conditioning , also make sure that we have the latest technology that enables us to be more competitive & expert in the field and stand behind any work we have performed. Our in-house employees are all professionally trained and deliver only excellence to whatever project they work on.

"Great service"

Noah H on October 2023

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Thermostat installations and replacements FAQs

It's often worth replacing your old thermostat with a newer model that can enhance your home's comfort and energy efficiency. Upgrading to a programmable or smart thermostat can save you up to $200 per year on energy bills. Plus, smart thermostats offer convenient features like remote control and learning capabilities, making your home more comfortable and easier to manage.

Signs of a bad thermostat include your HVAC system not turning on when it's supposed to or failing to reach the desired temperature. If the thermostat's display is blank or not functioning properly, it could be malfunctioning. Another indicator is the HVAC system running continuously without shutting off or cycling on and off too frequently. You might also notice uneven temperatures throughout your home, with some rooms being too warm or too cold. These issues suggest that the thermostat is failing and may need repair or replacement to ensure your HVAC system operates efficiently.

A thermostat should last between 10 to 20 years, depending on its quality and how well it's maintained. Over time, dust, wiring issues, and general wear can affect its performance. Even if a thermostat is still functioning after 10 years, you might choose to replace it to take advantage of newer energy-saving technologies and smart home integrations. Upgrading to a modern thermostat can improve efficiency, offer more control over your home's climate, and potentially lower energy bills.

The number of thermostats you need depends on your home's size, layout, and heating and cooling zones. In a standard single-zone HVAC system, one thermostat controls the temperature for the entire home. However, larger homes or those with multiple floors might benefit from multiple thermostats linked to a multi-zone HVAC system. This setup can offer better comfort and energy efficiency: It lets you customize the temperature in different areas, so you're only heating or cooling the spaces you're using.

Replacing a thermostat typically takes a professional technician about one to two hours to complete. If you're swapping out an existing thermostat for a similar model with compatible wiring, the process can be done in less than an hour. However, installing a new thermostat that requires additional wiring, such as a smart thermostat, or moving the thermostat to a new location can extend the time to two hours or more. Complex installations may also involve cutting into drywall or integrating with other home systems, which can add to the duration.

There are a few things that can cause your home thermostat to fail. The most simple one is age and cleanliness. Dirt, grease, dust, and other small particles can clog sensors and cause malfunctions in readings. You may also have a failing power supply and loose connections, and the simplest cause is that it isn't installed in the right place in your home so it can't properly sense air temperature. Repairing a thermostat costs around $210.

The 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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