Top-rated thermostat installers and replacers.

Get matched with top thermostat installers and replacers in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Thermostat installers and replacers in Castle Rock

Avatar for Prosper Electrical Contractors LLC
Prosper Electrical Contractors LLC
5413 Shoshone St
5.00(
3
)
Approved Pro
Prosper Electrical Contractors LLC
5413 Shoshone St
5.00(
3
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

Specialize in residential, commercial, including but not limited to single family, multifamily, new construction, remodel, and tenant finish. We value our customers and are committed to customer satisfaction. I am a small family operated business owner with 20 years of experience. I have small business overhead, which means I can pass on the savings to my customers. No job is to small. We will meet or exceed your expectations.

"They installed lights and ceiling fans for us. They are very responsive and professional. I have referred them to my family, and they were very happy with their work as well!"

Bernadette H on September 2023

Specialize in residential, commercial, including but not limited to single family, multifamily, new construction, remodel, and tenant finish. We value our customers and are committed to customer satisfaction. I am a small family operated business owner with 20 years of experience. I have small business overhead, which means I can pass on the savings to my customers. No job is to small. We will meet or exceed your expectations.

"They installed lights and ceiling fans for us. They are very responsive and professional. I have referred them to my family, and they were very happy with their work as well!"

Bernadette H on September 2023


Avatar for Comfair Heating and Cooling LLC
Comfair Heating and Cooling LLC
8642 Canongate Lane
5.00(
6
)
Approved Pro
Comfair Heating and Cooling LLC
8642 Canongate Lane
5.00(
6
)
Approved Pro
12 local quotes requested
2 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"We hired Comfair heating and cooling to install our new system AC and Furnace, from the beginning they measured and explained everything in detail and made sure we understand the whole process. We are super happy with the results, just to mention they gave us lifetime unit replacement warranty. We highly recommend this company to friends and neighbours who need their service. "

David A on March 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"We hired Comfair heating and cooling to install our new system AC and Furnace, from the beginning they measured and explained everything in detail and made sure we understand the whole process. We are super happy with the results, just to mention they gave us lifetime unit replacement warranty. We highly recommend this company to friends and neighbours who need their service. "

David A on March 2025


Avatar for Mike's Mechanical Services, LLC
Mike's Mechanical Services, LLC
1835 W Union Ave Unit 14.5
4.58(
6
)
Approved Pro
Mike's Mechanical Services, LLC
1835 W Union Ave Unit 14.5
4.58(
6
)
Approved Pro
Customers say: Quick response
11 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"The tech this company sent to my home was respectful. Above all else very knowledgeable. Would recommend again and again. Thank you for the great service."

Mark L on October 2023

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"The tech this company sent to my home was respectful. Above all else very knowledgeable. Would recommend again and again. Thank you for the great service."

Mark L on October 2023


A-Z Construction
955 S. Marshall St.
New on HomeAdvisorNew on Angi
Approved Pro
A-Z Construction
955 S. Marshall St.
New on AngiNew on HomeAdvisor
Approved Pro
20 years of experience
Free onsite estimate

A-Z Construction is a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. You will find us to be competitively priced while still paying close attention to the details of each and every project we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. Give us a call today to get your project started.

A-Z Construction is a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. You will find us to be competitively priced while still paying close attention to the details of each and every project we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. Give us a call today to get your project started.


Avatar for Buffalo Creek Boilers, Tankless & Air
Buffalo Creek Boilers, Tankless & Air
10137 W Dartmouth Pl #206
5.00(
3
)
Approved Pro
Buffalo Creek Boilers, Tankless & Air
10137 W Dartmouth Pl #206
5.00(
3
)
Approved Pro
Customers say: Quick response
1 years of experience
Free onsite estimate

10 YEARS EXPERIENCE - Insured/master mechanical license. I work on all brands of HVAC equipment, boilers, and water heaters. We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’ needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job

"Wes was great to work with! He is extremely knowledgeable and highly skilled in boilers, tankless water heaters, and air conditioning systems. He quickly diagnosed and repaired all our difficult boiler and hot water heat system issues, some of which had been going on for years. It has never worked better. I am so glad we found him!"

Dom E on April 2025

10 YEARS EXPERIENCE - Insured/master mechanical license. I work on all brands of HVAC equipment, boilers, and water heaters. We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’ needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job

"Wes was great to work with! He is extremely knowledgeable and highly skilled in boilers, tankless water heaters, and air conditioning systems. He quickly diagnosed and repaired all our difficult boiler and hot water heat system issues, some of which had been going on for years. It has never worked better. I am so glad we found him!"

Dom E on April 2025


Avatar for The Local Handyman 5280
The Local Handyman 5280
10602 Ash Court
5.00(
5
)
Approved Pro
The Local Handyman 5280
10602 Ash Court
5.00(
5
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Helping manage 500+ properties within the Denver metro & surrounding areas we believe there is no job too big or small. The core values of the company are based on that of dependability and quality. Striving to always be a TOP PRO and to provide our customers with best experience and service on the platform! It can be a daunting task looking for only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're only here to turn your ideas into reality but to make it a memorable experience every step of the way. Contact us right now, no matter where you are in the planning process.

"Josh's attention to detail and desire to make sure we were fully satisfied was awesome. I would hire him again in a minute!"

Scott W on March 2024

Helping manage 500+ properties within the Denver metro & surrounding areas we believe there is no job too big or small. The core values of the company are based on that of dependability and quality. Striving to always be a TOP PRO and to provide our customers with best experience and service on the platform! It can be a daunting task looking for only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're only here to turn your ideas into reality but to make it a memorable experience every step of the way. Contact us right now, no matter where you are in the planning process.

"Josh's attention to detail and desire to make sure we were fully satisfied was awesome. I would hire him again in a minute!"

Scott W on March 2024


Avatar for Good Day Mechanical, LLC
Good Day Mechanical, LLC
7482 Exeter Court
4.83(
3
)
Approved Pro
Good Day Mechanical, LLC
7482 Exeter Court
4.83(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Good Day Mechanical, ll is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Very good manners and had all the answers"

Duane I on February 2023

Good Day Mechanical, ll is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Very good manners and had all the answers"

Duane I on February 2023


Avatar for Steven & Sons Heating and Cooling
Steven & Sons Heating and Cooling
1601 W Swallow Rd, Apt 8B
4.86(
111
)
Approved Pro
Steven & Sons Heating and Cooling
1601 W Swallow Rd, Apt 8B
4.86(
111
)
Approved Pro
Customers say: Quality work
52 local quotes requested
10 years of experience

Steven & Sons Heating and Cooling does any job big or small. We take pride in our work our goal is to keep every customer happy. We keep our prices low and our quality of work high.. The list goes on. We offer free estimates and will be happy to sit down with you to talk about the job on hand. We look forward to servicing your needs. Call us for an estimate today!

"Steven and Sons came promptly to my house and quickly got my furnace replaced and running. However, in shutting off my furnace, my water heater would not restart. Their conversation with the manufacturer essentially came down to the control modules used were very fragile and were no longer used. These guys found a new part and acquired it for replacement. So far so good. Then the problem came. They failed to drain my water heater before removing the old control module. If there was no drain in the room, my basement would have been flooded. What was flooded was the insulation on my water heater. Soaked, all of it. No longer fit for service. Rather than acknowledge this, Steven and Son decided to install the replacement part and told me that it would be okay, just try to relight it in a few hours. I had to call a legit plumber to change out my water heater. Steven and Sons refuse to acknowledge their error and now insist on me paying them for destroying my water heater."

robert m on April 2025

Steven & Sons Heating and Cooling does any job big or small. We take pride in our work our goal is to keep every customer happy. We keep our prices low and our quality of work high.. The list goes on. We offer free estimates and will be happy to sit down with you to talk about the job on hand. We look forward to servicing your needs. Call us for an estimate today!

"Steven and Sons came promptly to my house and quickly got my furnace replaced and running. However, in shutting off my furnace, my water heater would not restart. Their conversation with the manufacturer essentially came down to the control modules used were very fragile and were no longer used. These guys found a new part and acquired it for replacement. So far so good. Then the problem came. They failed to drain my water heater before removing the old control module. If there was no drain in the room, my basement would have been flooded. What was flooded was the insulation on my water heater. Soaked, all of it. No longer fit for service. Rather than acknowledge this, Steven and Son decided to install the replacement part and told me that it would be okay, just try to relight it in a few hours. I had to call a legit plumber to change out my water heater. Steven and Sons refuse to acknowledge their error and now insist on me paying them for destroying my water heater."

robert m on April 2025


Avatar for Applewood Plumbing Heating & Electric
Applewood Plumbing Heating & Electric
5000 W 29th Ave
4.87(
571
)
Approved Pro
Applewood Plumbing Heating & Electric
5000 W 29th Ave
4.87(
571
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
80 local quotes requested

We have been proudly serving Denver, Boulder and the surrounding metro areas for over 50 years! At Applewood EVERY technician is licensed, background checked & drug tested. When using Applewood, customers receive a picture and short bio of the technician dispatched to their home. We will fix your problem RIGHT, the first time, at an approved, up-front price. After your appointment, we follow up with a phone call to make sure your appointment went just as you expected. We are open 6AM to 10PM, 7 days a week to serve you at your convenience with NO OVERTIME CHARGES.

"Excellent service!! Professional! very pleased!!"

Richard B on October 2024

We have been proudly serving Denver, Boulder and the surrounding metro areas for over 50 years! At Applewood EVERY technician is licensed, background checked & drug tested. When using Applewood, customers receive a picture and short bio of the technician dispatched to their home. We will fix your problem RIGHT, the first time, at an approved, up-front price. After your appointment, we follow up with a phone call to make sure your appointment went just as you expected. We are open 6AM to 10PM, 7 days a week to serve you at your convenience with NO OVERTIME CHARGES.

"Excellent service!! Professional! very pleased!!"

Richard B on October 2024


Avatar for Squeaks Services Inc.
Squeaks Services Inc.
4620 East Colfax Ave
4.46(
294
)
Approved Pro
Squeaks Services Inc.
4620 East Colfax Ave
4.46(
294
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
19 years of experience

At Squeaks Services, we proudly provide top-notch residential and commercial services, including Plumbing, Heating, Cooling, Natural Gas, Boilers, Swamp Coolers, Water Heaters, Toilets, Sewer and Drain Cleaning, Drain Repair, Pipe Repair, Pipe Replacement, and Sewer Repair & Installation. We also specialize in Whole Home Water Purification, Humidification, and Air Purification to enhance your home’s comfort and safety. As a locally owned and operated business, we are fully licensed and insured, delivering expert solutions you can trust. Our focus on preventative maintenance keeps your plumbing and HVAC systems clean, safe, and running efficiently year-round. Take advantage of new install rebates, tax incentives, and flexible financing options to make your upgrades more affordable. Why Choose Squeaks Services? Affordable $65 trip charge for repairs. Free estimates for all homeowners. Exceptional customer care and attention to detail.

"Plumber (Devon) came to address a leak under my kitchen sink. Disappeared in the crawl space for at least 20+ minutes, came out and tried to upsell me on re-doing my entire bathroom plumbing as well. Have lived in this home for 3 years with no issues with the bathroom plumbing. The next morning, bathroom pipes are not draining. Squeaks will not send another technician to follow-up on whatever went wrong yesterday. 0/10 recommend, unless you want additional and exponentially more expensive plumbing issues than what you started with"

Marisa B on January 2025

At Squeaks Services, we proudly provide top-notch residential and commercial services, including Plumbing, Heating, Cooling, Natural Gas, Boilers, Swamp Coolers, Water Heaters, Toilets, Sewer and Drain Cleaning, Drain Repair, Pipe Repair, Pipe Replacement, and Sewer Repair & Installation. We also specialize in Whole Home Water Purification, Humidification, and Air Purification to enhance your home’s comfort and safety. As a locally owned and operated business, we are fully licensed and insured, delivering expert solutions you can trust. Our focus on preventative maintenance keeps your plumbing and HVAC systems clean, safe, and running efficiently year-round. Take advantage of new install rebates, tax incentives, and flexible financing options to make your upgrades more affordable. Why Choose Squeaks Services? Affordable $65 trip charge for repairs. Free estimates for all homeowners. Exceptional customer care and attention to detail.

"Plumber (Devon) came to address a leak under my kitchen sink. Disappeared in the crawl space for at least 20+ minutes, came out and tried to upsell me on re-doing my entire bathroom plumbing as well. Have lived in this home for 3 years with no issues with the bathroom plumbing. The next morning, bathroom pipes are not draining. Squeaks will not send another technician to follow-up on whatever went wrong yesterday. 0/10 recommend, unless you want additional and exponentially more expensive plumbing issues than what you started with"

Marisa B on January 2025

...
Showing 1-10 of 985

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.
Aerial view of a Solar photovoltaic panels on a wood house roof surrounded by green vegetation
Nov 18, 2022
Nov 18, 2022
HomeAdvisor’s Solar Panel Cost Guide explores the cost of solar panels in California. Use our guide to find out how much solar panels cost in your city.
heat pump being repaired on the side of house
Apr 19, 2025
Apr 19, 2025
Use this guide to budget for heat pump repair costs based on factors such as problem type, part, heat pump type, professional labor, and more.
HVAC return air wall register vent
Apr 16, 2025
Apr 16, 2025
Wondering about ductwork installation costs for your home? Explore pricing breakdowns by material type, home size, and testing requirements.
house with heated driveway to melt snow
Apr 11, 2025
Apr 11, 2025
Budget for heated driveway costs based on factors like driveway size, heating method, site preparation, automation, labor, maintenance, and more.
Solar panels on a suburban house roof
Apr 6, 2025
Apr 6, 2025
Use this guide to budget for home solar battery costs based on factors such as system size, battery type, professional installation, storage, and more.
radiant heating system is being installed under floor in home
Mar 26, 2025
Mar 26, 2025
Check out how much a heated floor costs to install, exploring factors like the floor size, type, temperature zones, and heating system.
Share project details to get started.