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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon101
    Verified insulation services reviews

Top-Rated Insulation pros in Derby - Updated Nov 2026

Avatar for Good Life Energy Savers LLC
Good Life Energy Savers LLC
4.8(
106
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInsulation - Install or Upgrade

Serving Derby, CT and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"I got several estimates from several providers. The pricing seemed just ok with those other providers but something seemed off. Good Life came in and made sure that I was getting the correct amount of insulation (where the other service providers had under estimated) and helped me to get into a loan through the utility company for the cost of the insulation. Good life is a qualifying contractor for this and it saved me a lot of out of pocket expense. They came in and did what they had to do. They were professional and made sure the work was done well."
Spray foam application
Spray foam in attic
Good Life on the Job
Injecting Foam in Side Walls
Replacing Siding

+1

Response time1 day
4 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Good Life Energy Savers, LLC
Good Life Energy Savers, LLC
4.6(
77
)
Blown-In Insulation - Install or Upgrade

Serving Derby, CT and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"Great Customer Service equals great company. This is the first review I have ever written, but I was so impressed with Good Life Energy Savers that I had no option. Based on other internet reviews I hired Good Life Energy Savers to insulate my attic and exterior walls. Based on only a two-year sample I saved about 20% on my oil costs, but that is not why I am writing this review. This past Friday I called Good Life Energy Savers about an issue I found. I was told they would get back to me on Monday, and they did. They asked if they could come by to see the issues the same day, which they did. They acknowledged the issue and simply said they will take care of it, and they did. On Thursday morning a crew came by to fix it. They did an excellent job and went above and beyond to satisfy me (the customer). Having been in the business world for over 40 years, I know not every job goes perfectly, so good customer service is important. This was excellent customer service. I could not believe the effort they put in to make the job perfect. Thank you, Mike and the team Sincerely, Mark O"
 Tripolymer
 Tripolymer installation
 Spray Foam Installation
 Spray foam insulation projects
Installaton

+15

Response time1 day
22 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for New England Performance Insulation, LLC
New England Performance Insulation, LLC
4.4(
59
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Derby, CT and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"The crew worked quickly and efficiently to replace and upgrade the fiberglass batts in our basement and crawl space. I’m pleased with the outcome. (I put in even more wire supports afterwards — to secure the insulation between the joists — but that’s just my OCD.) It was a relatively small job for this company and I thought the cost was fair."
Attic Roof Line
Attic Roof Line
New Home Construction
New Home Construction
New Home Construction

+21

Response time1 day
Response rate88%
12 neighbors recently requested a quote
Avatar for Shelton Insulation and Gutters, LLC
Shelton Insulation and Gutters, LLC
4.7(
39
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Derby, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Warranties offered

"They were very professional, took care of helping me get the home energy audit and the rebates for attic and wall insulation. Also improved attic ventilation installing soffit vents and baffles. We got three estimates and they were a very good price, but the service is what sold us."
Weathered Cedar Shakes
Walkway and Retaining Wall
5" K Style Gutters
Attic with retaining wall and Pull Down Cover
Attic No storage

+1

Response time1 day
Response rate97%
13 neighbors recently requested a quote
Avatar for AWC Energy
AWC Energy
5.0(
18
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Derby, CT and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"The team was very patient and did a great job on the project. I had a few unexpected issues pop up during insulation of my basement but they took care of it without any fuss. Lomont is a pleasure to work with and communicated well throughout the project."
Insulation Project
Insulation Project
Painting - Exterior Project
Insulation Project
Insulation Project

+33

Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for Koala Insulation of Southern Connecticut
Koala Insulation of Southern Connecticut
5.0(
27
)
Spray Foam Insulation - Install

Serving Derby, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"Very professional company. From the initial contact, inspection and quote by Brian, to prompt scheduling follow-up by Jessen and arrival of the team, everything went seamlessly. Would definitely recommend this company. Jabari and Anthony did a great job insulating the rim joists, adding wall and pipe insulation under the sink on an outside wall and caulking a leaky window - no more breezes. Definitely feel a difference in the house now. The added attic hatch cover makes the heat stay below, where it belongs. Really appreciated the use of PPE when they were working with mineral wool. Very satisfied customer here."
Attic Spray Foam
Crawl Space SPF
After Spray Foam
Before Spray Foam
Before Spray Foam

+20

Response time1 day
Response rate98%
30 neighbors recently requested a quote
Avatar for McMahon Spray Foam, LLC
McMahon Spray Foam, LLC
4.6(
32
)
Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Derby, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Anthony and his team did an incredible job insulating our full gut remodel in Fairfield. He took the time to put together a foam package that made the most of our budget. The crew was polite, neat and efficient. They took great care to cover finished surfaces before spraying and did a thorough clean up so we could jump right into sheet-rocking. Highly recommended for quality of work, constant communication and value!"
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Open Cell Spray Foam

+5

Response time1 day
143 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Ecoorganic USA LLC
Ecoorganic USA LLC
5.0(
8
)
Spray Foam Insulation - Install

Serving Derby, CT and surrounding areas

Approved

In business since 2015

Free estimates

Small jobs welcome

"Ecofoam insulated my attic with closed-cell spray foam and the results came out great. The space feels completely sealed and much more comfortable already. Sevi and the team were very professional, easy to work with, and kept me updated throughout the whole process. I would highly recommend EcoFoam for anyone looking for quality insulation work."
Completed Spray Foam
Exterior of Home
Closed Cell
Exterior Batt
Interior Fiberglass

+29

Response time4 hrs
Response rate100%
13 neighbors recently requested a quote
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Insulation FAQs, answered by experts

Using plastic shrink film over the window will cut down on drafts, which makes the air inside your home feel warmer. Plastic shrink film doesn’t quite have the insulative properties of a new window or of adding insulation inside the window jamb, but it will help. Plus, it’s a cost-effective solution to keeping your home warmer.

You’ve likely heard the saying “heat rises”—well, it’s true! This is why it is critical to properly insulate your attic and protect yourself from chilly winter nights. During summer, your attic insulation will also protect against excessive heat gain radiating through the ceiling into the rest of your home below.

Garage doors that are not insulated can be a major source of heat loss. That’s why it’s essential to winterize your garage door with insulation and weather stripping to prevent heat loss and keep it warm more easily. Consult a local garage door installer if you need help determining the cause of your garage losing heat.

Yes, many professionals offer insulation options, such as insulated siding (including insulated metal siding), to improve your home's energy efficiency.

There are many reasons one bedroom may be hotter than the rest of the house. The sun will quickly heat a south-facing bedroom with a large window, especially if it lacks quality curtains. If the room has poor insulation, this could let more warm outside air in. Upstairs bedrooms are often hotter than ground-floor rooms because heat rises. Finally, rooms further away from the air conditioning unit may heat up a lot if the system is not properly balanced.

The Derby, CT homeowners’ guide to insulation services

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