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Find Thermostat installers and replacers in Ashburn

Avatar for X&M Heating and Cooling

X&M Heating and Cooling

5.00(
5
)
•Approved Pro

X&M Heating and Cooling

5.00(
5
)
•Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

MASTER HVAC License We take great pride in offering the best possible experience with our expertise, quality, and customer service. In order to understand the needs and expectations of our clients; we take great care to work and communicate with everyone in a professional manner. It is our mission to exceed our clients expectations by providing excellent workmanship and complete customer satisfaction, from the start of each project to its completion. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"We had an absolutely fantastic experience with X&M Heating and Cooling! From start to finish, Richard was beyond responsive, professional, and genuinely a pleasure to work with. You don’t always expect replacing major home systems to feel stress-free, but Richard made the whole process smooth and even enjoyable. They replaced our AC/Furnace (Condenser, Coil Pack, and Heater) as well as our hot water tank—a big job—and the crew knocked it out of the park. Everything was installed with care, attention to detail, and a clear pride in their workmanship. Richard took the time to explain what was happening every step of the way, which gave us total peace of mind. What stood out most, though, was the responsiveness. Whenever I had a question, Richard was quick to answer, patient, and genuinely friendly—it felt like working with a trusted neighbor rather than just a contractor. If you’re looking for a team that does top-notch work - don't look any further."

Joe L on September 2025

MASTER HVAC License We take great pride in offering the best possible experience with our expertise, quality, and customer service. In order to understand the needs and expectations of our clients; we take great care to work and communicate with everyone in a professional manner. It is our mission to exceed our clients expectations by providing excellent workmanship and complete customer satisfaction, from the start of each project to its completion. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"We had an absolutely fantastic experience with X&M Heating and Cooling! From start to finish, Richard was beyond responsive, professional, and genuinely a pleasure to work with. You don’t always expect replacing major home systems to feel stress-free, but Richard made the whole process smooth and even enjoyable. They replaced our AC/Furnace (Condenser, Coil Pack, and Heater) as well as our hot water tank—a big job—and the crew knocked it out of the park. Everything was installed with care, attention to detail, and a clear pride in their workmanship. Richard took the time to explain what was happening every step of the way, which gave us total peace of mind. What stood out most, though, was the responsiveness. Whenever I had a question, Richard was quick to answer, patient, and genuinely friendly—it felt like working with a trusted neighbor rather than just a contractor. If you’re looking for a team that does top-notch work - don't look any further."

Joe L on September 2025

Avatar for Brooks Heating & Air, LLC

Brooks Heating & Air, LLC

4.65(
129
)
•Approved Pro

Brooks Heating & Air, LLC

4.65(
129
)
•Approved Pro
Customers say: Quick response
25 local quotes requested
14 years of experience

Brooks Heating & Air is dedicated to providing the best cooling, heating and air solutions for your home or business. If you need air conditioning or heating services from a well-established HVAC company in Northern VA, call Brooks Heating & Air for reliable heating and cooling services.

"satisfied"

Subbarao K on February 2023

Brooks Heating & Air is dedicated to providing the best cooling, heating and air solutions for your home or business. If you need air conditioning or heating services from a well-established HVAC company in Northern VA, call Brooks Heating & Air for reliable heating and cooling services.

"satisfied"

Subbarao K on February 2023

Avatar for Service First Heating & Air

Service First Heating & Air

5.00(
9
)
•Approved Pro

Service First Heating & Air

5.00(
9
)
•Approved Pro
Customers say: Quick response
17 years of experience
Free onsite estimate

20+ years of experience, a Master HVAC Technician will be at your service! Service First Heating & Air HVAC Contractor. ZERO DOWN, 100% FINANCING AVAILABLE! Repair HVAC, new heating & cooling AC installations, seasonal heat & AC maintenance tune-ups, emergency repair, thermostat install, FREE quotes, and FREE second opinions on your HVAC heating and cooling system. We will consult with you to find comfort solutions that fit your heating and cooling needs within budget. We will provide you with a full consultation to explain all of your available options so that you can choose the system or repair that?s right for your home. Serving all of Fauquier County, VA, and surrounding areas. Service First Heating & Air puts your heating and cooling home comfort needs first! Gainesville, Haymarket, Bristow, Nokesville, Vint Hill, Warrenton, Bealeton, Remington, Midland, Catlett, Sumerduck, Goldvein, Marshall, Culpeper, Brandy Station, Amissville, Rixeyville, Jeffersonton, Rappahannock

"Our system broke and they were quick to come and the most reasonably priced company we found. We needed a new system, ours was old with the house when we bought it. They got us up and running quickly. They were very clean, courteous, and explained everything along the way so I did not feel pressured. I will definitely use them again!"

Melissa W on April 2022

20+ years of experience, a Master HVAC Technician will be at your service! Service First Heating & Air HVAC Contractor. ZERO DOWN, 100% FINANCING AVAILABLE! Repair HVAC, new heating & cooling AC installations, seasonal heat & AC maintenance tune-ups, emergency repair, thermostat install, FREE quotes, and FREE second opinions on your HVAC heating and cooling system. We will consult with you to find comfort solutions that fit your heating and cooling needs within budget. We will provide you with a full consultation to explain all of your available options so that you can choose the system or repair that?s right for your home. Serving all of Fauquier County, VA, and surrounding areas. Service First Heating & Air puts your heating and cooling home comfort needs first! Gainesville, Haymarket, Bristow, Nokesville, Vint Hill, Warrenton, Bealeton, Remington, Midland, Catlett, Sumerduck, Goldvein, Marshall, Culpeper, Brandy Station, Amissville, Rixeyville, Jeffersonton, Rappahannock

"Our system broke and they were quick to come and the most reasonably priced company we found. We needed a new system, ours was old with the house when we bought it. They got us up and running quickly. They were very clean, courteous, and explained everything along the way so I did not feel pressured. I will definitely use them again!"

Melissa W on April 2022

Avatar for A & V Handyman, LLC

A & V Handyman, LLC

5.00(
15
)
•Approved Pro

A & V Handyman, LLC

5.00(
15
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

Hello!!! I’m Alex Ruffing, welcome to my page! I’m a born & raised Northern Virginian with 19 years in construction services (and counting). I started young, with family, on area commercial jobs; Wolftrap, Metro Garages and Park & Rides, and many of our shopping plazas. Then spent some time traveling the east coast building in the industrial sector; concrete, sky rises. Now I am happy to be home and operating as a Handyman(+). Handyman because I mostly operate independently, preforming all kinds of repair and remodeling opportunities. (+) because I am well connected with reputable tradespeople in the area, and I always happy to discuss larger residential projects; backyard pavilions, outdoor kitchens, shotcrete pools, additions, movie theaters, bars, and wine cellars. My cell phone is (571)320-8605. Do not hesitate to call or text so we can discuss solutions regarding your home’s next repair, remodel, or improvement. With best wishes, thank you. I look forward to hearing from you.

"Sam is very friendly and understanding, ensuring that every step in the process was done correctly, and even did things that he didn't have to do, but he did anyway. He really went the extra mile for me. He's been doing this for a while, so if you're looking for experience, this is your guy. Great technician, highly recommended."

Bruce S on September 2025

Hello!!! I’m Alex Ruffing, welcome to my page! I’m a born & raised Northern Virginian with 19 years in construction services (and counting). I started young, with family, on area commercial jobs; Wolftrap, Metro Garages and Park & Rides, and many of our shopping plazas. Then spent some time traveling the east coast building in the industrial sector; concrete, sky rises. Now I am happy to be home and operating as a Handyman(+). Handyman because I mostly operate independently, preforming all kinds of repair and remodeling opportunities. (+) because I am well connected with reputable tradespeople in the area, and I always happy to discuss larger residential projects; backyard pavilions, outdoor kitchens, shotcrete pools, additions, movie theaters, bars, and wine cellars. My cell phone is (571)320-8605. Do not hesitate to call or text so we can discuss solutions regarding your home’s next repair, remodel, or improvement. With best wishes, thank you. I look forward to hearing from you.

"Sam is very friendly and understanding, ensuring that every step in the process was done correctly, and even did things that he didn't have to do, but he did anyway. He really went the extra mile for me. He's been doing this for a while, so if you're looking for experience, this is your guy. Great technician, highly recommended."

Bruce S on September 2025

Air We Breathe LLC

5.00(
19
)
•Approved Pro

Air We Breathe LLC

5.00(
19
)
•Approved Pro
Super Service Award
Customers say: Quick response
24 local quotes requested
16 years of experience

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at Air We Breathe strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction. Emergency calls accepted.

"Gerald was awesome, He really cares about his customers and did an excellent job. I will be using this company again if I neef more work."

Robert G on September 2025

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at Air We Breathe strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction. Emergency calls accepted.

"Gerald was awesome, He really cares about his customers and did an excellent job. I will be using this company again if I neef more work."

Robert G on September 2025

Avatar for R&S Mechanical, Inc.

R&S Mechanical, Inc.

5.00(
10
)
•Approved Pro

R&S Mechanical, Inc.

5.00(
10
)
•Approved Pro
23 local quotes requested
15 years of experience

With over 18 years of experience in the HVAC industry, R&S Mechanical, Inc. is your industry expert in Bristow. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"Job was done right and much cheaper than other than other bids"

Mike S on January 2026

With over 18 years of experience in the HVAC industry, R&S Mechanical, Inc. is your industry expert in Bristow. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"Job was done right and much cheaper than other than other bids"

Mike S on January 2026

Avatar for Snell Heating & Air Conditioning

Snell Heating & Air Conditioning

4.73(
2,296
)
•Approved Pro

Snell Heating & Air Conditioning

4.73(
2,296
)
•Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
205 local quotes requested

Family owned & operated. Financing available. Credit cards. All work done by experienced professionals to ensure consistent high quality. Award winning company at your service.

"I’ve been a loyal Snell customer for years, but this recent experience was deeply disappointing. After our AC failed in August, Snell diagnosed a leaking evaporator coil. We chose to replace the system through them, and the salesperson took time to evaluate the setup in advance. However, on installation day, the crew arrived without the correct ductwork and had to make adjustments on the fly. Unfortunately, the adjustments were poorly executed: • The Aprilaire humidifier was mounted on sloped ductwork rather than a level surface, contrary to manufacturer specifications. • The hole for the humidifier was cut inaccurately. • The drain line was left kinked in multiple places. Aprilaire support later confirmed the humidifier was not installed correctly and warned this could lead to water backing up into the system — a concern I had raised with the installers before they left. Despite multiple follow-up attempts, I received no meaningful response. I was told my concerns would be escalated, but no one followed through. This was a major investment, and I now feel I need to bring in another HVAC team to correct issues that should have been resolved from the start. I’ve recommended Snell in the past, but I can’t in good faith do so now after this experience."

Will H on September 2025

Family owned & operated. Financing available. Credit cards. All work done by experienced professionals to ensure consistent high quality. Award winning company at your service.

"I’ve been a loyal Snell customer for years, but this recent experience was deeply disappointing. After our AC failed in August, Snell diagnosed a leaking evaporator coil. We chose to replace the system through them, and the salesperson took time to evaluate the setup in advance. However, on installation day, the crew arrived without the correct ductwork and had to make adjustments on the fly. Unfortunately, the adjustments were poorly executed: • The Aprilaire humidifier was mounted on sloped ductwork rather than a level surface, contrary to manufacturer specifications. • The hole for the humidifier was cut inaccurately. • The drain line was left kinked in multiple places. Aprilaire support later confirmed the humidifier was not installed correctly and warned this could lead to water backing up into the system — a concern I had raised with the installers before they left. Despite multiple follow-up attempts, I received no meaningful response. I was told my concerns would be escalated, but no one followed through. This was a major investment, and I now feel I need to bring in another HVAC team to correct issues that should have been resolved from the start. I’ve recommended Snell in the past, but I can’t in good faith do so now after this experience."

Will H on September 2025

Avatar for Appleton Campbell, Inc.

Appleton Campbell, Inc.

4.70(
46
)
•Approved Pro

Appleton Campbell, Inc.

4.70(
46
)
•Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
158 local quotes requested

Appleton Campbell is the local name you can count on for all of your plumbing, heating, cooling and electrical needs.

"Yes the job was completed and worked. The plumber that they sent out was not professional."

Gail D on February 2025

Appleton Campbell is the local name you can count on for all of your plumbing, heating, cooling and electrical needs.

"Yes the job was completed and worked. The plumber that they sent out was not professional."

Gail D on February 2025

Avatar for M.E. Flow

M.E. Flow

New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

M.E. Flow

New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
34 local quotes requested
75 years of experience

M.E. Flow offers FREE in-home consultations for replacement HVAC systems and we are an authorized dealer of most major brands. Established in 1951 by Millard Edward Flow we remain family owned. Replacing your HVAC system and water heater is a big investment. When you go with M.E. Flow your satisfaction is guaranteed. We do not install customer supplied equipment, do new construction, or give quotes over the phone. We send a professional home comfort advisor to your home--even meet you after hours. During your home visit we will design you the perfect system, answer all your questions, and get your system in the family budget. Financing and/or rebates are typically available. Qualified Staff: You get a team of professionals, NATE certification means your getting the best. Company employees are required to pass a background investigation which include a criminal records check and drug testing. We also offer the best guarantees.

M.E. Flow offers FREE in-home consultations for replacement HVAC systems and we are an authorized dealer of most major brands. Established in 1951 by Millard Edward Flow we remain family owned. Replacing your HVAC system and water heater is a big investment. When you go with M.E. Flow your satisfaction is guaranteed. We do not install customer supplied equipment, do new construction, or give quotes over the phone. We send a professional home comfort advisor to your home--even meet you after hours. During your home visit we will design you the perfect system, answer all your questions, and get your system in the family budget. Financing and/or rebates are typically available. Qualified Staff: You get a team of professionals, NATE certification means your getting the best. Company employees are required to pass a background investigation which include a criminal records check and drug testing. We also offer the best guarantees.

Avatar for Zee Servicing LLC

Zee Servicing LLC

5.00(
1
)
•Approved Pro

Zee Servicing LLC

5.00(
1
)
•Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

We are specialized in all type of maintenance, repairs, and remodeling, plumbing, drywall, painting and carpentry projects in DMV area. Our expert handyman are always ready around the clock to handle all of your needs on timely and professional manner. Zee Servicing LLC also do basement framing, kitchen and bathroom remodeling too.

"Did work in a timely fashion."

Roz S on July 2025

We are specialized in all type of maintenance, repairs, and remodeling, plumbing, drywall, painting and carpentry projects in DMV area. Our expert handyman are always ready around the clock to handle all of your needs on timely and professional manner. Zee Servicing LLC also do basement framing, kitchen and bathroom remodeling too.

"Did work in a timely fashion."

Roz S on July 2025

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FAQs for thermostat installation and replacement projects in Ashburn, VA

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 Ashburn, VA homeowners’ guide to thermostat installations and replacements

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

See all articles