Find a thermostat installation professional near Diamond Bar, CA

Give us a few details and we’ll match you with the right pro.

Top 10 Thermostat Installation Professionals near Diamond Bar, CA

Aced It! Cooling & Heating

Excellent 4.9

(45)

Excellent 4.9

(45)

82 hires on Thumbtack
Serves Diamond Bar, CA

Debbie B. says, "He answered all my questions regarding the furnace system check, rewiring / installation of a new Thermostat and a comprehensive maintenance plan."See more

Instant Book availability for Tue, May 14

ALL WEATHER CONDITIONING HVAC SERVICES INC.

Excellent 4.9

(102)

Excellent 4.9

(102)

157 hires on Thumbtack
Serves Diamond Bar, CA

Online now

Briana B. says, "Joe and his crew did an amazing job installing our air conditioning in the garage!!! Very professional and his work is awesome!!! Thank you so much, we definitely recommend :)"See more

Instant Book availability for Tue, May 14

AARD Mechanical

Very good 4.6

(47)

Very good 4.6

(47)

119 hires on Thumbtack
Serves Diamond Bar, CA

Cassandra M. says, "Excellent service, professionalism and very knowledgeable! I was very impressed by their timely responsiveness & affordable pricing! Thank you so much AARD!!"See more

Instant Book availability for Tue, May 14

ALPINE Heating And Cooling Inc

Exceptional 5.0

(83)

Exceptional 5.0

(83)

104 hires on Thumbtack
Serves Diamond Bar, CA

Natali H. says, "He was very polite and I could not be happier with his level of expertise, professionalism, and customer service! I strongly recommend this company."See more

Instant Book availability for Tue, May 14

Northstar plumbing, heating and air conditioning

Good 4.4

(263)

Good 4.4

(263)

799 hires on Thumbtack
1 similar job done near you

Alice M. says, "Excellent informative very professional company. Family owned business guaranteed to go far, call these guys for the best overall experience."See more

Instant Book availability for Tue, May 14

Mr.DeesHeat&Cool

Exceptional 5.0

(6)

Exceptional 5.0

(6)

Serves Diamond Bar, CA

Shelby T. says, "Great experience with my mini split installation!"See more

Instant Book availability for tomorrow

JM Mechanical

Exceptional 5.0

(10)

Exceptional 5.0

(10)

30 hires on Thumbtack
Serves Diamond Bar, CA

Ashley P. says, "I recently had JM Mechanical out to service 2 of my systems. Turns out one company left some wiring disconnected. ON PURPOSE! Mario spotted it, showed me what was done. He fixed the issue, and got it up and running. The other system, had issues with blown fuses, he replaced those. Then tested the capacitor, he showed me that was bad, replaced that. And then checked the refrigerant charge. And that was low! Our systems are older and we know they have to get replaced but Mario didn’t pressure us into any of it. We’re fortunate to have called JM Mechanical. Thank you once again and God bless."See more

Instant Book availability for today

DZO HVAC GROUP INC

5.0

(2)

5.0

(2)

6 hires on Thumbtack
Serves Diamond Bar, CA

Abigale K. says, "Our heat was not working.Denis responded quickly, came on time, was able to identify and fix the problem on the spot. He explained the issue well, was fair in his pricing and very professional."See more

Instant Book availability for today

MSP Heating and Air

Exceptional 5.0

(25)

Exceptional 5.0

(25)

29 hires on Thumbtack
Serves Diamond Bar, CA

Evangeline N. says, "Quick response and was able to accommodate on the hottest day of summer! Fantastic work and was able to replace parts on the spot! I will use them again!!"See more

Instant Book availability for today

Exceptional 5.0

(19)

Exceptional 5.0

(19)

40 hires on Thumbtack
Serves Diamond Bar, CA

Jacob K. says, "Michael went above and beyond, installing hardware on my AC unit to get it up and running again despite some parts having failed."See more

Instant Book availability for Sat, May 18

Reviews for Diamond Bar thermostat installation professionals

Stephen W.

The technician explained to us that we did not really need to use C-wire for installing our new smart thermostat as he can use a workaround for it. We are satisfied with the work.

Northstar plumbing, heating and air conditioning

Ready to find a pro?

See more reviews, compare prices, and hire your favorite pros all with Thumbtack.

Why hire professionals on Thumbtack?

Free to use

You never pay to use Thumbtack: Get cost estimates, contact pros, and even book the job—all for no cost.

Compare prices side-by-side

You’ll know how much your project costs even before booking a pro.

Hire with confidence

With access to 1M+ customer reviews and the pros’ work history, you’ll have all the info you need to make a hire.

Find a thermostat installation professional near Diamond Bar, CA

Find a thermostat installation professional near Diamond Bar, CA

Top 10 Thermostat Installation Professionals near Diamond Bar, CA

Related cost information

Popular in Diamond Bar

You might also like

In other nearby areas