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Top-Rated Thermostat installers and replacers in Mount Rainier - Updated Nov 2026

Valnard General Service Solutions
4.4(
11
)
Thermostat - Install or Replace

Serving Mount Rainier, MD and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

Valnard General Service Solutions (GSS) is built on over 25 years of experience in the field of general contracting. We offer free estimates, competitive rates, flexible payment plans and the highest quality of professional repairs and general construction service. Valnard and its sub-contractors are licensed and bonded.

Response time7 hrs
Response rate100%
1 neighbors recently requested a quote
United Air Temp, Air Conditioning and Heating
New to Angi
Thermostat - Install or Replace

Serving Mount Rainier, MD and surrounding areas

Approved (Corporate)

In business since 2009

Free estimates

Credit card accepted

Comfort First Heating & Cooling is the team you need for all your home solutions. Comprehensive comfort is our legacy. \n \nWe're dedicated to delivering unparalleled customer service that mirrors our core values of integrity, stewardship, and excellence. \n \nWe look forward to having you join the Comfort First family as we continue our mission of creating customers for life by earning your business.

Avatar for S & J Services LLC
S & J Services LLC
4.7(
163
)
Thermostat - Install or Replace

Serving Mount Rainier, MD and surrounding areas

In business since 2005

Free estimates

"All done well. Final seal on rhe deck took a while to get done (rain/wet surface delayed it). Phone contacts with road crews were the issue: did not alert us of a cancellation on a wet day they were to seal the deck, then showed up on a later date without warning or a doorbell ring when they did decide to do it. Good, hard, thorough workers, to be sure, and the office-staff phone contacts were all very responsive."
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+16

Recommended by92%of homeowners
Avatar for LastMinuteLabor.com
LastMinuteLabor.com
4.5(
992
)
Thermostat - Install or Replace

Serving Mount Rainier, MD and surrounding areas

In business since 2005

Emergency services offered

Credit card accepted

"Two men arrived on time and quickly moved the items I indicated into the garage. They stacked and arranged everything neatly and did not damage or break anything. They were finished well  within the minimum. They were polite, worked diligently and efficiently  and did not hesitate to check with me when they were not quite certain of what was required or expected. There are two reasons I graded them B in professionalism. First, one of the men asked to use the bathroom on arrival. It is my expectation that workers stop in route at a fast food place or some other such facility for that activity and arrive ready to work - not wander around my home. That's just me. Second, I signed the invoice on their smart phone and was told I would get the receipt via email. It has not arrived (when I do this in Nordie's the receipt shows up before I get out of the store). Bottom line . . . the work and price was as advertised. It is my plan to use them again to bring the furniture back in from the garage once the water damage is taken care of and the new flooring is installed."
Recommended by89%of homeowners
American Home Contractors Inc
4.7(
2,134
)
Thermostat - Install or Replace

Serving Mount Rainier, MD and surrounding areas

In business since 1986

Free estimates

Emergency services offered

"Thank you James Im, Antonio and crew for an amazing experience and a job well done! It is rare these days to find a home improvement company that you can trust from beginning to end. AHC staff and representatives ensured that every detail from estimates, to coordinating delivery of materials and quality control of installation was performed to the highest standards and exactly on time. James and Antonio/crew were attentive to our every question and concern, and in the end made the experience with AHC a memorable one worthy of the highest level recommendation. Bottom line: If you choose any other roof replacement contractor - you will be making a mistake!"
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+509

Recommended by95%of homeowners
National Service Pros
4.1(
89
)
Thermostat - Install or Replace

Serving Mount Rainier, MD and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"Did not have any hot water. They were able to come out the next morning, showed up on time, were friendly and did a good job. The price was reasonable, they did not try to talk me into replacement parts but suggested I begin a budget as future repairs seem inevitable. He even left his number in case there were any issues. I would definately use them again & reccommend them to friends."
Commercial building
tagged services
Commercial building
dream kitchen 1
dream kitchen 2

+3

Recommended by92%of homeowners
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FAQs for thermostat installation and replacement projects in Mount Rainier, MD

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 Mount Rainier, MD homeowners’ guide to thermostat installations and replacements

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