
Get matched with top insulation pros in Fullerton, CA
There are 32 highly-rated local insulation pros.
Need a pro for your insulation service project in Fullerton, CA?
TRUSTED BY FULLERTON, CA HOMEOWNERS
4.7
Average homeowner rating74
Verified insulation services reviews
Verified Reviews for Insulation Service pros in Fullerton, CA
*The Angi rating for Insulation Service companies in Fullerton, CA 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 Fullerton, CA 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 October 04, 2025
Find Insulation pros in Fullerton

Guardian Home Energy
Guardian Home Energy
Whole Home Energy Efficiency Weatherization and Insulation Company. We specialize in insulating and sealing houses to create drastic comfort, health and savings differences. We specialize in Comprehensive Home Energy Audits, Attic Clean Outs, Attic/ interior Air-Sealing, Attic Insulation, Attic Ventilation, Radiant Barrier, Whole House Fans, Duct Replacement, Duct Sealing, Drill and Fill Wall Insulation with Full Texture and Paint Match, Crawlspace Insulation/ Vapor Barriers.
"This was the best experience with this company. Katherine was very professional And knowledgeable. The team that showed up to install the installation did a wonderful job. Calvin came back the following week and touched up the wall. Calvin was very professional. I appreciate all the work they did. I can already tell a difference with the air conditioning. Can't wait to experience this winter. And the noise level. Between my condo and the other condo was decreased by the insulation in the wall. I will recommend them to anyone that asked me about Installation."
Carol A on September 2025
Whole Home Energy Efficiency Weatherization and Insulation Company. We specialize in insulating and sealing houses to create drastic comfort, health and savings differences. We specialize in Comprehensive Home Energy Audits, Attic Clean Outs, Attic/ interior Air-Sealing, Attic Insulation, Attic Ventilation, Radiant Barrier, Whole House Fans, Duct Replacement, Duct Sealing, Drill and Fill Wall Insulation with Full Texture and Paint Match, Crawlspace Insulation/ Vapor Barriers.
"This was the best experience with this company. Katherine was very professional And knowledgeable. The team that showed up to install the installation did a wonderful job. Calvin came back the following week and touched up the wall. Calvin was very professional. I appreciate all the work they did. I can already tell a difference with the air conditioning. Can't wait to experience this winter. And the noise level. Between my condo and the other condo was decreased by the insulation in the wall. I will recommend them to anyone that asked me about Installation."
Carol A on September 2025

Insulation Nation, LLC
Insulation Nation, LLC
Hi there from Dustin, owner of Insulation Nation! Here in So Cal, we join our Colorado office in providing personalized high touch experiences for our customers. I work with our customers directly every step of the way from evaluation, education and review of options, through the project and to inspection of the results. We've never seen less than a 5 star review. Small businesses live and die by reviews and we are ready to earn 5 stars on your project! Thank you! C-02 Insulation and Acoustic #: 1127373 EXP: 10/31/2026
"We had Insulation Nation (Dustin) come to our house to look at our attis insulation; our house was built in the late 70's and I had added more blown-in insulation many years ago. We decided on adding 8" of blown-in insulation to reduce our heating/cooling cost and to reduce the cycling of our HVAC system. They did a wonderful job of sealing any attic leaks, covers for our canned lighting fixtures, built a dam around our whole house fan, added baffles around our soffits, and added the insulation. Nicely done and a professional job. Would recommend using their service."
Robert S on February 2025
Hi there from Dustin, owner of Insulation Nation! Here in So Cal, we join our Colorado office in providing personalized high touch experiences for our customers. I work with our customers directly every step of the way from evaluation, education and review of options, through the project and to inspection of the results. We've never seen less than a 5 star review. Small businesses live and die by reviews and we are ready to earn 5 stars on your project! Thank you! C-02 Insulation and Acoustic #: 1127373 EXP: 10/31/2026
"We had Insulation Nation (Dustin) come to our house to look at our attis insulation; our house was built in the late 70's and I had added more blown-in insulation many years ago. We decided on adding 8" of blown-in insulation to reduce our heating/cooling cost and to reduce the cycling of our HVAC system. They did a wonderful job of sealing any attic leaks, covers for our canned lighting fixtures, built a dam around our whole house fan, added baffles around our soffits, and added the insulation. Nicely done and a professional job. Would recommend using their service."
Robert S on February 2025

Insulation Labs
Insulation Labs
Attic & Crawlspace & Solar Energy Specialists. The Insulation Labs team has unmatched customer service and attic/solar experience. Pooling years of knowledge and expertise together in order to provide you with the best service possible. Our team is friendly and helpful, explaining any jargon to you in a concise and understandable manner. It is important to work with a team that has a good reputation in your local community; Insulation Labs is known for its affordability, professionalism, and world-class customer service in the greater Los Angeles area. We have earned a reputation as one of the top attic cleaning and insulation replacement services in greater Los Angeles, continually furthering our stellar reputation and customer satisfaction. We provide our customers with home solutions that are tailored to them, allowing them to improve their attics, crawl spaces, and their home's energy efficiency in no time!
"The guys were really neat. They set up a tunnel from the attic to the back door. There really wasn't much to clean up after. They vacuumed out the old insullation and laid in new. It's hard to say if they did a good job in the attic, because I don’t know what its supposed to look like. They were in the attic almost about 7 hours. The only issue was that they said the senior discount on their Angie's list page must be old so they didn't honor it."
Pamela D on November 2024
Attic & Crawlspace & Solar Energy Specialists. The Insulation Labs team has unmatched customer service and attic/solar experience. Pooling years of knowledge and expertise together in order to provide you with the best service possible. Our team is friendly and helpful, explaining any jargon to you in a concise and understandable manner. It is important to work with a team that has a good reputation in your local community; Insulation Labs is known for its affordability, professionalism, and world-class customer service in the greater Los Angeles area. We have earned a reputation as one of the top attic cleaning and insulation replacement services in greater Los Angeles, continually furthering our stellar reputation and customer satisfaction. We provide our customers with home solutions that are tailored to them, allowing them to improve their attics, crawl spaces, and their home's energy efficiency in no time!
"The guys were really neat. They set up a tunnel from the attic to the back door. There really wasn't much to clean up after. They vacuumed out the old insullation and laid in new. It's hard to say if they did a good job in the attic, because I don’t know what its supposed to look like. They were in the attic almost about 7 hours. The only issue was that they said the senior discount on their Angie's list page must be old so they didn't honor it."
Pamela D on November 2024

Marathon Insulation
Marathon Insulation
Hi my name is Jonathan owner of Marathon Insulation. I started working for a reputable company 13 years ago, just this year I decided to start my own business. I have all the knowledge and hands on experience to answer any of your insulation questions.
"Great very pleased"
Betsy W on December 2023
Hi my name is Jonathan owner of Marathon Insulation. I started working for a reputable company 13 years ago, just this year I decided to start my own business. I have all the knowledge and hands on experience to answer any of your insulation questions.
"Great very pleased"
Betsy W on December 2023

Everguard Home Insulation Inc.
Everguard Home Insulation Inc.
Everguard Insulation has been a family business since 1959. Today, over 65 years and three generations later, we're proud of our contribution to the community, economy and environment. We help people save money on their utility bills while also enjoying a more comfortable home in both summer and winter. We also take pride in helping the environment and doing our part towards energy conservation and making the planet a greener place for generations to come. Additional phone numbers 818.348.1460 & 310.274.5644 - Additional DBA - Home Insulation Products. Award winning.
"We were very with the entire process! They took time to cover everything and the first and second team of workers were polite and careful in the work they performed. Aldi the clean up afterwards was excellent as well. We were super happy and would highly recommend them to anyone thinking of replacing there insulation!!"
Leo C on May 2025
Everguard Insulation has been a family business since 1959. Today, over 65 years and three generations later, we're proud of our contribution to the community, economy and environment. We help people save money on their utility bills while also enjoying a more comfortable home in both summer and winter. We also take pride in helping the environment and doing our part towards energy conservation and making the planet a greener place for generations to come. Additional phone numbers 818.348.1460 & 310.274.5644 - Additional DBA - Home Insulation Products. Award winning.
"We were very with the entire process! They took time to cover everything and the first and second team of workers were polite and careful in the work they performed. Aldi the clean up afterwards was excellent as well. We were super happy and would highly recommend them to anyone thinking of replacing there insulation!!"
Leo C on May 2025
Better Building Solutions
Better Building Solutions
We provide Windows, Roofing, Attic Insulation, and Exterior Painting installation. We believe in offering Quality work at the lowest price possible.
We provide Windows, Roofing, Attic Insulation, and Exterior Painting installation. We believe in offering Quality work at the lowest price possible.
american duct pros
american duct pros
your health and quality of your air duct system is our commitment . we specialize in air duct cleaning and analyzing the duct efficiency. we will clean it and if we see anything wrong we will give you the right suggestion how to solve it. we are family business for about 40 years our special is air duct system and dryer vent cleaning for $249.00
your health and quality of your air duct system is our commitment . we specialize in air duct cleaning and analyzing the duct efficiency. we will clean it and if we see anything wrong we will give you the right suggestion how to solve it. we are family business for about 40 years our special is air duct system and dryer vent cleaning for $249.00
EC Renewables
EC Renewables
**Due to our current install schedule our roofing projects start at $12,000** Please call today to schedule your estimate 310-310-4108, thanks!
"Yaron was super friendly and professional My roof was done correctly! And Everything that was promised to me was done and then some. I highly recommend him."
Shlomi A on May 2024
**Due to our current install schedule our roofing projects start at $12,000** Please call today to schedule your estimate 310-310-4108, thanks!
"Yaron was super friendly and professional My roof was done correctly! And Everything that was promised to me was done and then some. I highly recommend him."
Shlomi A on May 2024
Calebs Imagination
Calebs Imagination
Building or remodeling your dream home. Whatever your imagination envisions we can make it a reality. We have 25 years of experience with pulling permits, designing, drawing schematics/blueprints, earthwork, concrete, stucco, framing, roofing, Plumbing, electrical, HVAC, windows, drywall, insulation and more!
Building or remodeling your dream home. Whatever your imagination envisions we can make it a reality. We have 25 years of experience with pulling permits, designing, drawing schematics/blueprints, earthwork, concrete, stucco, framing, roofing, Plumbing, electrical, HVAC, windows, drywall, insulation and more!
Toms-co.com
Toms-co.com
Making Southen California safe again. Consult with Tom on any project with a no obligation site visit and estimate for completion of the work. Over 25 years of residential ane commercial construction experience. We offer residential and commercial abatement and construction services using limited access equipment, fantastic clean up and amazing dependability. Our technicians have over 20 years of construction experience.
"Everything was finished efficiently and quickly while working with Tom and his team. We felt very taken care of because they walked us through each stage in the process. This situation was really stressful for our family but we felt like the stress was lifted with the help of Tom and his team. Very grateful for their help and quick work."
Baylee T on September 2024
Making Southen California safe again. Consult with Tom on any project with a no obligation site visit and estimate for completion of the work. Over 25 years of residential ane commercial construction experience. We offer residential and commercial abatement and construction services using limited access equipment, fantastic clean up and amazing dependability. Our technicians have over 20 years of construction experience.
"Everything was finished efficiently and quickly while working with Tom and his team. We felt very taken care of because they walked us through each stage in the process. This situation was really stressful for our family but we felt like the stress was lifted with the help of Tom and his team. Very grateful for their help and quick work."
Baylee T on September 2024
The Fullerton, CA homeowners’ guide to insulation services
From average costs to expert advice, get all the answers you need to get your job done.
- •
Discover roof insulation costs, including average prices, key cost factors, and expert tips to help you budget and save on your next project.
The cost to insulate a basement varies based on materials, size, and other factors, as well as how much of the work you wish to perform yourself.
Learn the key factors that influence the cost of renting a blown-in insulation machine.
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.
How does a radiant barrier work? This alternative insulation is effective at cooling a home, but its unique mechanism won’t provide the same heating benefits.
Are you wondering how to install foam board insulation? This step-by-step guide can help you decide whether you can tackle the project yourself or if you're better off calling a pro.
- La Habra, CA Insulation pros
- Placentia, CA Insulation pros
- La Habra Heights, CA Insulation pros
- La Mirada, CA Insulation pros
- Anaheim, CA Insulation pros
- Buena Park, CA Insulation pros
- Brea, CA Insulation pros
- Atwood, CA Insulation pros
- Rowland Heights, CA Insulation pros
- La Palma, CA Insulation pros
- Stanton, CA Insulation pros
- Villa Park, CA Insulation pros
- Cypress, CA Insulation pros
- Garden Grove, CA Insulation pros
- Cerritos, CA Insulation pros
- Artesia, CA Insulation pros
- Hacienda Heights, CA Insulation pros
- Whittier, CA Insulation pros
- Santa Fe Springs, CA Insulation pros
- Yorba Linda, CA Insulation pros
- Norwalk, CA Insulation pros
- La Puente, CA Insulation pros
- Orange, CA Insulation pros
- Westminster, CA Insulation pros
- Walnut, CA Insulation pros
- Los Alamitos, CA Insulation pros
- Rossmoor, CA Insulation pros
- Midway City, CA Insulation pros
- Anaheim Hills, CA Insulation pros
- Diamond Bar, CA Insulation pros