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Top-Rated Thermostat installers and replacers in Markham - Updated Nov 2026

Air We Breathe LLC
5.0(
20
)
Thermostat - Install or Replace

Serving Markham, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Offers commercial services

"The attendant was courteous, on time and went the extra mile. He checked out my entire heat pump system, changed filter and gave me excellent advice on how to maintain my system. I would highly recommend the company to anyone wanting installation or repair on heat pump systems."
My Work
My Work
Response time4 hrs
Response rate85%
15 neighbors recently requested a quote
Air We Breathe LLC
5.0(
20
)
Thermostat - Install or Replace

Serving Markham, VA and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

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. \n \nEmergency calls accepted.

  My Work
  My Work
3 neighbors recently requested a quote
Recommended by55%of homeowners
Avatar for Appleton Campbell, Inc.
Appleton Campbell, Inc.
4.3(
61
)
Thermostat - Install or Replace

Serving Markham, VA and surrounding areas

Approved

In business since 1976

Free estimates

Emergency services offered

"Gabriel was extremely honest and professional. He did not try to upsell me on anything and took the time to explain my options. Since my home is relatively new, he suggested that the water heater or pressure reducing valve (PRV) might still be under warranty and recommended that I check with the builder's contractor before spending money on repairs. He adjusted the water pressure at the PRV, provided a quote for a replacement PRV if needed, and answered all of my questions. I really appreciated his honesty and integrity. I would definitely call Campbell for future plumbing projects and would strongly recommend Gabriel and the company to anyone looking for trustworthy service."
Happy HVAC Technician
Electrician gathering parts
Checking in the equipment needed for the day
Happy Electricians
We make our own sheet metal!

+9

Response time9 hrs
Response rate94%
202 neighbors recently requested a quote
Avatar for Powerhouse Homeimprovement
Powerhouse Homeimprovement
4.6(
10
)
Thermostat - Install or Replace

Serving Markham, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

Quality work and attention to detail and affordable prices. We are dedicated to providing good customer service to homeowners so that they are happy. Please see some of the services we offer below and call -or- click to schedule a free estimate today!

Busted water line
Repainted exterior white paint
Recessed bathroom wall shelf
VCT flooring
Waste Drain line

+37

1 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Pope's Air Conditioning & Heating
Pope's Air Conditioning & Heating
4.8(
798
)
Thermostat - Install or Replace

Serving Markham, VA and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"Our 2.5 ton upstairs A/C was leaking coolant, so we opted to replace it. Since downstairs unit is a Carrier, we picked Pope's to bid for the job, as they were listed by Carrier, had good marks on Angie's list, and were locally owned. Pope's Air responded the same day we called, and Tim Stewart came in the afternoon, and spent over an hour describing our options and costs. We received a competitive bid, and selected Pope's Air for the work. Our previous supplier had replaced our downstairs unit a couple of years back, and had put in a unit which stressed our ductwork, causing a whistle when loaded. Pope's Air volunteered to have a look at that problem, too, included at no charge. Pope's Air scheduled and came on time the following week. It took a day to do the work, and the installers were clean and professional. They came up with an inexpensive fix in the cold air return ducting, and implemented it. No more whistle. In the upstairs unit, they discovered some crushed ductwork which our previous supplier had ignored and replaced about 20' of ducts, all for a very reasonable upcharge. The A/C works fine, w/ a better airflow, and they will return for an inspection once the weather warms enough to exercise the unit. We plan to use Pope's Air for all of our Heating and A/C needs in the future. Highly recommended."
Additional Photos
Additional Photos
Additional Photos
Recommended by93%of homeowners
Avatar for LastMinuteLabor.com
LastMinuteLabor.com
4.5(
992
)
Thermostat - Install or Replace

Serving Markham, VA and surrounding areas

In business since 2005

Emergency services offered

Credit card accepted

"They showed up about 10 minutes behind schedule, hence the B for punctuality, but they hit the ground running as soon as they walked through the door.  I only hoped to use them to move the biggest, most cumbersome items, and I was taking care of the rest.  They wrapped or protected those things that needed it and loaded everything extremely well.  We were on the road with the first load in about 1 1/2 hours.  We completed a second load.  In all, they moved a three piece sectional, china cabinet, oak dining table with six chairs, leather sofa and chair, two queen size rooms with furniture, two twin size rooms with furniture, patio table and chairs, grill, trampoline, and miscellaneous other pieces of furniture and boxes.  They were extremely efficient.
They were extremely professional and courteous.  However, I gave them a B because one of the gentlemen had some questionable tattoos that likely speak to his past, which I did not ask about.  He was still great to talk with and worked well.  The team was very cohesive, you could tell they have been working together for some time.
I know how hard they worked, so I also bought them lunch and gave them a decent tip.  It was well worth it!
"
Recommended by89%of homeowners
Avatar for STONEBERGER GARAGE DOORS UNLIMITED, INC.
STONEBERGER GARAGE DOORS UNLIMITED, INC.
5.0(
138
)
Thermostat - Install or Replace

Serving Markham, VA and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"From the first inquiry phone call to installation everything went extremely well.  I called Stoneberger Garage doors on Friday, Mar 27, 2015, based on a recommendation from a friend.  Our garage door springs and pulleys were in need of replacement.  I spoke to Amber.  She explained the cost and process for replacement of the springs, etc.  She also told me that if my garage was a standard 8'x7", they were having a special of $850 per door which included new garage doors, and replacement of all the springs, tracks, and pulleys.  I decided to have the doors replaced.  She said that Stoneberger could replace everything on Tuesday, Mar 31st.  On Mar 31st, Keith came out removed the old garage doors and installed the new doors.  Before he left, he explained what he had done and then he insured that all old parts and doors were cleaned up and loaded on his truck.  The price was exactly as quoted.  Amber and Keith were extremely courteous, friendly, and professional through this whole process.  I am very happy with the work that Stoneberger Garage Doors did for me and I would use them again in the future.
"
Grand Harbor
Wayne Dalton Wood Doors
Clopay Gallery Door
Clopay Coachman
Clopay Canyon Ridge

+11

Recommended by100%of homeowners
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FAQs for thermostat installation and replacement projects in Markham, 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 Markham, 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.