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Find Thermostat installers and replacers in Los Angeles

Avatar for Trinity Heating and AC
Trinity Heating and AC
5.0(
37
)

Serving Los Angeles, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"Trinity was absolutely Lämborginee! Chris showed up right on time and did an outstanding job. He is highly competent at what he does, and it shows in every detail. I was especially impressed that he arrived in a clean truck, was dressed professionally, and maintained a clean workspace throughout the job?he even vacuumed before leaving. I will definitely be using him again for my other properties. I?d rate him a 12 out of 10! Most importantly, he truly takes pride in his work?and that makes all the difference."
Furnace Before
AC After
Furnace After
AC Before
Before - Furnace

+83

Response time3 hrs
Response rate98%
47 neighbors recently requested a quote
Avatar for Just Be Cool Supply, LLC
Just Be Cool Supply, LLC
5.0(
33
)

Serving Los Angeles, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"I recently had both of my AC units serviced by Just Be Cool Supply LLC, and I couldn’t be more satisfied with the experience. Dyon and his team were prompt, professional, and easy to work with from start to finish. They arrived on time, were well-prepared, and took the time to explain what they were doing without rushing through the job. Everything was handled efficiently, and the quality of work was excellent. What really stood out was their honesty and approach. There was no upselling or pressure, just straightforward recommendations and fair pricing. It’s clear they take pride in their work and genuinely care about helping customers rather than just making a quick sale. Dyon is also doing something special beyond the business itself. He actively mentors young people in the trade, helping them build skills and a future. That kind of leadership says a lot about the integrity behind the company. Overall, Just Be Cool Supply LLC is reliable, affordable, and highly professional. "
New installation
New installation
HVAC installation
New Ac
New Ac

+11

Response time7 hrs
Response rate90%
9 neighbors recently requested a quote
Avatar for Felipe Handyman Services
Felipe Handyman Services
5.0(
121
)

Serving Los Angeles, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1984

Free estimates

Emergency services offered

"Roof repair and fascia repair .. they did such amazing job! Very satisfied beyond words could ever express!! I have more projects to do on my house and will only hire Felipe for these jobs!! They are great and they went out of his way to make sure I am satisfied!! Great people doing great work!! A must hire for your home projects!!"
Bathroom Remodel
Kitchen Remodel 3
Kitchen Remodel 2
Bathroom Remodel 2
Kitchen Remodel

+177

Response time1 day
Recommended by98%of homeowners
Avatar for DNA Heating & Cooling, Inc.
DNA Heating & Cooling, Inc.
4.8(
52
)

Serving Los Angeles, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Paid $1500 for drain job on our hvac system the previous folks of our place didnt do. Our ceiling was low so they had to make a makeshift drain. Overall the job was done and it works. Its not the best job, but it does work."
New Blown in insulation
New R-30 blown in insulation
Recessed Light cover
Foam Gun
Sealed Plumbing attic penetrations

+26

Response time5 hrs
23 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Local Home Services Inc.
Local Home Services Inc.
4.9(
27
)

Serving Los Angeles, CA and surrounding areas

Approved

In business since 2017

Credit card accepted

Customers say: Quick response

"Decent, professional, polite work at exorbitant prices. They use a task-based method, not a flat hourly or daily rate. They quoted $8,000 for one handyman (changing several door handles and door hinges, installing a ceiling light and switch, shaving the top of a door, partial grouting of two showers, relocating a small kitchen wall cabinet to a different wall, minor painting, sealing an outdoor light, etc.) using mostly my materials (hinges, switches, light, door handles). Only after work started was I informed that they scheduled 4 days at my home ($2,000 per day). They deemed it unnecessary to whare this info in advance because they are task-based, even though they somehow estimated it would take 4 full days. Also, of the 4 scheduled days, 2 reschedules occurred due to their personnel issues. On the last day, I intended to go through the checklist of work, discuss possible future work, and to ask for assistance in properly measuring 2 doors for replacement. However, the handyman arrived late, and noted that he was in a rush to depart for a medical appointment."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+27

Response time1 day
Recommended by92%of homeowners
Avatar for Penguin Heating and Air Inc
Penguin Heating and Air Inc
5.0(
14
)

Serving Los Angeles, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"I highly recommend this company. Penguin heating & Air was very quick to respond to my request, fast text reply, sent them pics, they replied with a quote, which was way lower than anyone else on this site, or even our regular guy that we normally use, we scheduled an appointment for the very next day, which was today, he also finished the job the same day! David did a very good job, very professional. Despite a terrible rainy day, he got the job done. When he was done he walked me through with exactly what he did. He also quoted me for a service on an existing unit and his quote was almost $200 less than what our regular guy charges us... We will absolutely be using this company again."
Diamond Bar
Diamond Bar
Diamond Bar
Furnace Install
AC Condenser

+6

Response time2 hrs
Response rate100%
7 neighbors recently requested a quote
...
Showing 1-10 of 2077
FAQs for thermostat installation and replacement projects in Los Angeles, CA

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 Los Angeles, CA homeowners’ guide to thermostat installations and replacements

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