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Find Thermostat installers and replacers in Fairfax

Avatar for Appleton Campbell, Inc.
Appleton Campbell, Inc.
4.3(
59
)

Serving Fairfax, VA and surrounding areas

Approved

In business since 1976

Free estimates

Emergency services offered

"I want to comment on excellent work by techs David MacClary, Preston Shaw, Brett Allard, Seth Andres, and Justin Fox. Outstanding team effort on my full HVAC replacement. Superb customer service and excellent technician install. Theses guys set the bar high. Thank you for job well done."
Happy HVAC Technician
Electrician gathering parts
Checking in the equipment needed for the day
Happy Electricians
We make our own sheet metal!

+9

Response time8 hrs
144 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for REO-SERVICEPRO, INC
REO-SERVICEPRO, INC
5.0(
42
)

Serving Fairfax, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Warranties offered

"Gary Golman and his team did an excellent job in transforming our 1957 retro bathroom in to our beautiful, new, and modern bathroom today. Especially dealing with plumbing issues & replacement, Gary's team were very knowledgeable & professional."
Additional Photos
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+13

Response time1 day
1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Jim the Handyman
Jim the Handyman
4.7(
551
)

Serving Fairfax, VA and surrounding areas

Approved

Super Service Award Winner

In business since 1984

Free estimates

Warranties offered

"Very impressed with this group. The estimator was knowledgeable and gave a very fair price, half as much as another estimate. The carpenter was skilled, neat, and communicated well, cared about our satisfaction. The scheduler is friendly and very good at reminders when they are coming. They replaced several sections of paneling in the basement and reattached the old trim which was tricky, matched and provided the panels, They even returned to fix something my husband had installed wrong. Highest recommendation of any outfit I've worked with."
Response time1 day
2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for John C Flood LP.
John C Flood LP.
4.4(
59
)

Serving Fairfax, VA and surrounding areas

Approved

Super Service Award Winner

In business since 1920

Free estimates

Warranties offered

"I hired JC Flood to fix my hot water heater. They popped over for a quick appointment and our hot water heater worked for a few days before dying again. JC Flood explained the hot water needed to be replaced. They were excellent about including proposals for replacement units. Very much appreciated!"
Tech Education
John C. Flood - Going to Work
John C. Flood - Teamwork
John C. Flood - Busy Morning
John C. Flood - Work Underway

+28

Response time2 hrs
45 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for JW Home Improvement
JW Home Improvement
4.4(
5,748
)

Serving Fairfax, VA and surrounding areas

Approved (Corporate)

In business since 2001

Warranties offered

Credit card accepted

"This is the fifth or sixth time we have used JW for home improvement projects, and we have never been disappointed. We started with 'simply' trying to find the source of water damage in our lower-level, and ended up renovating our laundry/storage room and installing new vinyl floors throughout the bulk of the downstairs. From Josh making multiple trips out to ensure the estimate and scope was solid, to Marcos and Israel completing the project from start-to-finish, we are thrilled with the results!"
Additional Photos
CARPENTRY SERVICE
EXTERIOR PAINTING
KITCHEN REMODEL
Jesse Wertjes with Angie!

+8

17 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Home Remedies Handyman Services LLC
Home Remedies Handyman Services LLC
4.9(
38
)

Serving Fairfax, VA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"He was very responsive and accommodating, providing me an estimate after hours and also squeezing me into his busy schedule at the last minute. The work took a little longer than expected and a couple things were left off my to do list that I thought were included in the initial estimate. I didn’t bother to say anything because he did re grout my entire tub which was not on my list so I was very appreciative. Here are the things I had issues with: The tile he replaced in the shower were a different color then what I have installed, the dry wall repair looks unfinished and although he took the time to explain my faulty shower plumbing issue (and even tried to to do the best he could to repair it), the shower is now in a worse condition than before the repairs and my water is not getting hot anymore."
Response time7 hrs
Recommended by97%of homeowners
Avatar for X&M Heating and Cooling
X&M Heating and Cooling
5.0(
6
)

Serving Fairfax, VA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"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."
Response time4 hrs
Recommended by60%of homeowners
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FAQs for thermostat installation and replacement projects in Fairfax, 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 Fairfax, 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.