4.5 
206 *The Angi rating for Insulation Service companies in Sunnyvale, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
*The HomeAdvisor rating for Insulation Service companies in Sunnyvale, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
Last update on January 15, 2026
Serving Sunnyvale, TX and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Enrique, his brother Alfredo and the rest of the team were very professional and did a great job. Would highly recommend them for an insulation project."
Serving Sunnyvale, TX and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"Last summer, even with the AC running constantly and the thermostat set at 72 degrees, the temperature inside the house would reach 80 degrees or higher. This summer is much better; the thermostat is set to 70 degrees, and the house actually stays at 70. Our electric bills are also reflecting this improved energy efficiency. Thank you Dillon, NxT Level Insulation for the outstanding work and exceptional customer service."
Serving Sunnyvale, TX and surrounding areas
Approved
In business since 2008
Free estimates
Warranties offered
"They did what they said they would in a very timely manner. The whole house insulation job was fast, neat, and very professional."
+23
Serving Sunnyvale, TX and surrounding areas
Approved
In business since 2025
Free estimates
Small jobs welcome
"Top notch customer service. They explained to me line by line all the rebates I can get through the utility company. The biggest being the green energy tax credit that was about to expire by the end of the year if I were to install a solar attic fan through them, which I had no idea. The rebates and credits really help me make the decision to get it done now. So glad we did. Technicians were on time, in and out clean and efficient. The solar attic fan they installed made a huge difference in our attic. They were able to retrofit it over our existing vent hole which was very nice because we didn't have to cut a new hole in our roof. All and all just wonderful experience. The new insulation made our home much more comfortable now."
Serving Sunnyvale, TX and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"My son recently purchased an older home that had very little attic insulation. After Rob's team finished adding fiberglass insulation the A/C turned off almost immediately and the home remained at 74 degrees even though it was over 100 that day. I was very impressed and plan to have them come inspect my attic next !"
Serving Sunnyvale, TX and surrounding areas
Approved
In business since 2020
Free estimates
Credit card accepted
"They had fair pricing. They were on time, efficient, communicated well, and cleaned up well before leaving. Very nice people to hire for insulation installation."
Serving Sunnyvale, TX and surrounding areas
Approved
In business since 2013
Free estimates
Credit card accepted
"If you just need an attic insulated, then these guys offer a replete program."
Serving Sunnyvale, TX and surrounding areas
Approved
In business since 2005
Free estimates
Credit card accepted
"After to job was completed the attic looked amazing. The insulation was perfectly level. I was impressed they did an excellent job cleaning up afterwards."
+15
Serving Sunnyvale, TX and surrounding areas
Approved
Super Service Award Winner
In business since 2007
Free estimates
Credit card accepted
"We had two separate appointments, one for duct cleaning and one to add insulation. Both crews were professional, clean, efficient and polite. They were all responsive to questions and feedback. I will definitely hire Climate Doctors again in the future and will have no problems referring them to friends, family, co-workers, and my Real Estate clients!"
Serving Sunnyvale, TX and surrounding areas
Approved
In business since 2005
Free estimates
Credit card accepted
"Chris Gage at energy attic is very professional and straight forward I appreciate the great service I highly recommend this company."
+6
From average costs to expert advice, get all the answers you need to get your job done.
New insulation makes your home more comfortable and boosts energy efficiency. Use this guide to budget for insulation installation costs in Dallas, TX.
Insulating your attic can massively improve your home’s efficiency and reduce electric bills. Use this guide to find out what attic insulation will cost you in Dallas, TX.
The cost of blown-in insulation in Dallas, TX varies depending on the type of insulation, labor, prep work, and more. Learn more about the cost factors in this guide.
What is insulation? This behind-the-scenes home fixture will maintain comfortable temperatures in your home no matter the season. It’ll lower energy bills, to boot.
Use this DIY checklist for insulation repair to make your living space more comfortable and reduce your heating and cooling bills in the process.
There are 10 types of insulation you can use for your home. Read this guide to discover which insulation types could be best for the job.
