4.6 
1.4k+ *The Angi rating for Nest Installation companies in Ontario, 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 Ontario, 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 July 21, 2026
Serving Ontario, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2006
Free estimates
Emergency services offered
"100% recommend very professional, after installation they clean up everything too highly recommended"
+263
Serving Ontario, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Emergency services offered
"Danny did an excellent job all the way thru. Fit my budget and did the install very timely and system is up and fully running same day. Highly recommend their services!"
+67
Serving Ontario, CA and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
"Assemble a Sauna. A very complicated job. He did a wonderful job. Very thorough and complete."
+21
Serving Ontario, CA and surrounding areas
Approved
In business since 1978
Free estimates
Emergency services offered
"It went very well ! I called them around 930 am to schedule the disposal installation and they were at my house two hours later. I'm very happy with the results . I'd hire them again in a second !!"
+3
Serving Ontario, CA and surrounding areas
Approved
In business since 1996
Free estimates
Warranties offered
"We bought a house from a smoker. We hired a separate company for the decontamination and Robert coordinated with them to be able to start the restoration after they were done. He had to paint EVERYTHING: ceilings, walls, closets, trim, doors.... We replaced ~80% of the flooring with tile and he was able to put in a beautiful medallion! He replaced a toilet, fixed other plumbing issues, installed ceiling fans on the patio, cleaned up the yard, changed all the doorknobs, repaired the garage door, replaced the keypad remote.... There were so many things, it is difficult to list them all. The property looks BEAUTIFUL and we plan additional projects for him. We highly recommend Robert to care for your home as if it were his own!"
+7
Serving Ontario, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Warranties offered
"Trinity Heating installed a new thermostat in my house. The technician, Jimmy, was professional and courteous. After the installation he took the time to explain to me how to set up and use the new thermostat. I’m completely satisfied with their service and will use them again if needed."
+83
Serving Ontario, CA and surrounding areas
Approved
In business since 2013
Free estimates
Warranties offered
"Great service. friendly, clean and went above and beyond."
+4
Serving Ontario, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2012
Free estimates
Customers say: Quick response
"Andy and Adrian are friendly and professional. They are punctual and thorough in their work, they make sure that the customer is satisfied with the work done. My husband hired them to install a new air conditioning unit over a year ago and we called them for the yearly routine cleaning now. Their prices are competitive. They are honest. We highly recommend them."
+4
Serving Ontario, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"furnace was installed and works well. I repaired gap in drywall above furnace after installation. for $3800 I think they should have offered to repair the drywall or compensation for my work. George reached out to me about my concerns and offered to resolve the issues. I'm very pleased with the job and his customer service."
Serving Ontario, CA and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Robert and Michael installed a whole new air system in our addition. They went above and beyond finding the right system and making sure in was properly installed."
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