4.6 
977 *The Angi rating for Nest Installation companies in Duarte, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Nest Installation needs.
*The HomeAdvisor rating for Nest Installation companies in Duarte, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Nest Installation needs.
Last update on September 30, 2025
Serving Duarte, CA and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
"Marco is amazing. Installed my sink and was kind, thorough and I would hire him again."
+21
Serving Duarte, CA and surrounding areas
Approved
In business since 1978
Free estimates
Emergency services offered
"Showed up when they sar, diagnosed the problem quickly. As we have a heat pump we have had many issues with repairs, even with the company that installed it!"
+3
Serving Duarte, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Warranties offered
"They responded to request with an appointment that afternoon and James as not only on time but early. James was very knowledgeable about installing both Nest Thermostats and did a great job and setup the Google home for me. Highly recommend them."
+83
Serving Duarte, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"Calls back within minutes. Quote was great. Installed within a few days and left the house in clean condition. Very professionall. The AC unit works great"
Serving Duarte, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2025
Free estimates
Emergency services offered
"Very knowledgeable, professional, and great customer service! Penguin, serviced our central AC & Heat and they explained everything to us before performing the work. They also replaced our moldy insulation in our attic. They packed and transported the old moldy insulations, ensuring that the mold does not spread, and they left our house free of any mess. I'd recommend Penguin Heating and Air to anybody in need of AC/Heat service, repair, or installation."
+6
Serving Duarte, CA and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"Great HVAC installation- professional, on time, and everything works perfectly. The team was friendly, efficient, and left everything clean. Highly recommend!"
+12
Serving Duarte, CA and surrounding areas
Approved
In business since 1990
Free estimates
Emergency services offered
"Ray is very professional, and provided options for my air conditioning unit replacement. Ray went out of his way to replace a small gas line leak that he found. He also drove to Anaheim early on Saturday morning to pick up a part that was needed for the AC unit, and came over to install it so that I would have the air conditioner available for the upcoming heat wave this week. He and his team were on time, and considerate during the installation process. I highly recommend RS Air Conditioning & Heating."
+2
Serving Duarte, CA and surrounding areas
Approved
In business since 1988
Free estimates
Warranties offered
Air-Tech Air Conditioning & Heating, Inc., is a customer focused heating and air conditioning company that was originally started in 1988. Located in Pasadena, CA, we employ highly trained people whose goal is to make our company the best service company in San Gabriel Valley, Los Angeles County, Orange County, San Fernando Valley. Over 35 years of experience. Weekends by appointment only.
Serving Duarte, CA and surrounding areas
Approved
In business since 1990
Free estimates
Credit card accepted
"Very responsive company and I am very satisfied with their installation of my AC system."
+6
Serving Duarte, CA and surrounding areas
Approved
In business since 1996
Emergency services offered
Warranties offered
"On time, solved problem, ordered part, came when expected, installed within time frame given. Friendly and efficient service. Thank you!"
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