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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon43
    Verified insulation services reviews

Top-Rated Insulation pros in Old Greenwich - 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 Old Greenwich, 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
3 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 Old Greenwich, 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
20 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for DISCOUNT INSULATION COMPANY
DISCOUNT INSULATION COMPANY
4.8(
94
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Old Greenwich, CT and surrounding areas

Approved

In business since 1981

Free estimates

Credit card accepted

"Discount Insulation quoted a fair price, showed up on time, and did an excellent job insulating the crawl space in our new home. I already feel a difference in how warm our home feels. Stu, the owner, is wonderful to work with and is an excellent resource for all things insulation and beyond. Highly recommend hiring them for any insulation projects in your home."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time2 days
Response rate100%
Recommended by98%of homeowners
Avatar for New England Performance Insulation, LLC
New England Performance Insulation, LLC
4.4(
59
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Old Greenwich, 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%
10 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 Old Greenwich, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I don’t know why anyone would hire anyone else. Anthony is courteous/responsive, knows insulation cold, was quick to provide estimates and service and is smart about his hires, with net results—great workmanship at a very fair price."
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Open Cell Spray Foam

+5

Response time1 day
136 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 Old Greenwich, 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
Avatar for Koala Insulation of the Sound Shore
Koala Insulation of the Sound Shore
4.9(
6
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Old Greenwich, CT and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"We could not be more pleased with the work performed by Koala Insulation of the Sound Shore. From start to finish, the team was incredibly professional, detail-oriented, and went above and beyond our expectations. The work was done carefully and thoroughly, and everything was explained clearly along the way. Paul and Brian, in particular, were exceptionally patient and knowledgeable, taking the time to answer all of our questions and making sure we felt comfortable with every decision. The results were immediate—our home is noticeably more comfortable, and we’re already looking forward to significantly lower energy bills. If you’re considering insulation work, I highly recommend this company. Excellent craftsmanship, outstanding customer service, and a job very well done."
Batt Ceiling
Batt Wall
Blown in Attic
Open Cell Spray Foam
Spray Foam

+3

Response time5 days
22 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
387
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Old Greenwich, CT and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Everyone was very courteous, on time, and the personalities of the entire team were amazing. Edgar and crew made this project very easy and we are very very very very pleased! AJ kept us updated and was very helpful as well with the project. I will keep them in mind for our next projects and would definitely recommend to our friends and family members. Also Iâ ve already noticed the air quality difference from our new roof and now insulation. Job well done all around"
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Gutters

+42

1192 neighbors recently requested a quote
Recommended by96%of homeowners
...
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Insulation FAQs, answered by experts

Three signs that you need crawl space insulation are drafts, high energy bills, and mold. Drafts can start in crawl spaces and cause hot or cold air to spread to the rest of your home through holes in the floors and walls. And even if your entire home is well-insulated, you can still feel an unchecked draft from your crawl space and in your utility bill. Uninsulated crawl spaces can let in air and moisture, and because they’re built directly on the ground and difficult to dry out, they are hotspots for mold and mildew.

Insulating ductwork improves your HVAC system's energy efficiency by protecting the air from external conditions and preventing energy loss as it travels through the ducts. This means your system doesn't have to work as hard to heat or cool your home, leading to lower energy bills and a reduced carbon footprint. Additionally, insulated ducts help maintain a more consistent and stable indoor temperature, enhancing comfort. Proper insulation also improves indoor air quality by reducing the entry of allergens and pollutants and helps prevent problems like condensation and mold formation within the ductwork.

We do not recommend fiberglass insulation for soundproofing purposes, especially if you are working on a room that’s part of your living space. Fiberglass insulation is dangerous, and the installation process is hazardous. It is also harmful to the environment. When there are so many newer, healthier non-fiberglass alternatives in the market, the lower cost of fiberglass insulation simply doesn’t justify the harm and danger it poses.

If you’re using faced insulation with paper, face the paper toward the inside of the room during the installation process. 

A good way to remember this is that the paper should face the “warm side” as it’s the vapor barrier, meaning it should face toward where the heat will be coming from.

For your safety, you should always wear a mask when cutting batts of fiberglass insulation. We also recommend wearing eye protection, safety gloves, and long sleeves to protect your skin. Properly suiting up helps you avoid several fiberglass issues, such as cuts from the tiny shards of glass and inhaling small bits of fiberglass.

The Old Greenwich, CT homeowners’ guide to insulation services

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