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Serving New Haven, Old Saybrook, New London, and surrounding shoreline communities
Connecticut Towns We Serve – Insulation Contractor

Towns We Serve in Connecticut

Browse the full list of towns in Connecticut where we offer insulation services for homes and businesses.
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hartford
Rocky Hill
Rocky Hill

Rocky Hill's Insulation Pros — Real Results

Serving Rocky Hill, CT—riverside town on the Connecticut River with Dinosaur State Park, Academy Hall Museum, Elm Street Historic District, Quarry Park & the nation’s oldest ferry—we specialize in insulation, air sealing & energy audits. Keep your colonial and suburban homes cozy, lower energy bills, and qualify for CT efficiency rebates today!
Rocky HillCross-section diagram of a house showing key insulation areas including attic, walls, basement, crawl space, and rim joists
hartford
Simsbury
Simsbury

Simsbury's Insulation Pros — Real Results

Serving Simsbury, CT—home to Talcott Mountain State Park & Heublein Tower, the Simsbury 1820 House (Amos Eno House), Old Drake Hill Flower Bridge & Belden Forest—we specialize in insulation, air sealing & energy audits. Keep your historic and valley homes snug, reduce energy bills, and claim CT rebates today!
SimsburyCross-section diagram of a house showing key insulation areas including attic, walls, basement, crawl space, and rim joists
fairfield
Stamford
Stamford

Insulation Contractor in Stamford Connecticut

Serving Stamford, CT—home to landmarks like the Hoyt‑Barnum House (c. 1699), “Fish Church” modernist gem, Marion Castle in Shippan Point, plus four National Register historic districts—we specialize in insulation, air sealing & energy audits for landmark homes. Keep your colonial, mid‑century or waterfront homes cozy, cut heating bills, and claim up to $10K in CT rebates today!
StamfordCross-section diagram of a house showing key insulation areas including attic, walls, basement, crawl space, and rim joists
new-london
Stonington
Stonington

Stonington's Insulation Pros — Real Results

Serving Stonington, CT—Connecticut’s oldest borough and a picturesque maritime village with the iconic Stonington Harbor Lighthouse Museum, Captain Nathaniel B. Palmer House, James Merrill House & lively Water Street galleries—we specialize in insulation, air sealing & energy audits. Keep your colonial and waterfront homes cozy, reduce energy bills, and take advantage of CT energy rebates today!
StoningtonCross-section diagram of a house showing key insulation areas including attic, walls, basement, crawl space, and rim joists
new-haven
Wallingford
Wallingford

Wallingford's Insulation Pros — Real Results

Serving Wallingford, CT—a town rich in colonial heritage with sites like Nehemiah Royce House (1672), Franklin Johnson & Samuel Simpson mansions, plus family-friendly parks and energy-saving rebate programs via Wallingford Electric Division—we specialize in insulation, air sealing & energy audits. Improve comfort, shrink heating costs, and access local/state efficiency rebates today!
WallingfordCross-section diagram of a house showing key insulation areas including attic, walls, basement, crawl space, and rim joists
No locations found!
4.9/5 from 100+ Customer Reviews

Reviews from our customers over 48 years

Nealon did an outstanding job in terms of courteous services, as their team members, as well as Chris who was responsible for directing the job, were most professional!!! They cleaned up nicely, and my goods remained intact. Also and happily stated, it’s been one week since they’ve installed insulation in our home, and we notice a huge difference in the amount of energy we are using for heating…which equates to $avings!!! In short, we’d use them again, and glad we chose them for this endeavor!!!

Dia CJW

Highly recommended. Their estimate was competitive, the work was done in a timely and clean manner, they explained what was done, and our house is warmer as we head into the winter. When we had a question, they came back out to talk with us and helped us answer our questions. I will use them again and recommend them to anyone.

Ariyanakylstram

They are an amazing company to do work with! Jen in the office is polite, pleasant, and very competent. The work was done well and very quickly. We had our attic and basement insulated. I would 100% recommend!

Timothy Saunders

The Nealon team was professional and considerate of my property. I noticed a 200-kilo watt decrease in my electric bill along with an additional savings in oil consumption of 50 gallons. No more drafty cellars and so far, the mice have gone elsewhere.

Christine

Fast, efficient and great price! Didn’t even notice them insulating our attic and making a big difference already! Would highly recommend for anyone that wants to cut down on their energy bill!!

David Chase

Great experience! Very friendly and professional. They were on time, stuck to their quote and work timeline and have done a great job with two projects for me. I would definitely recommend.

Tom L

Nealon Energy Solutions has been my go to company for my personal property energy solutions & savings and all of my residential remodeling projects. as a remodeling contractor myself, I take pride in utilizing quality trades people, using quality products that perform at the top of their game. Nealon has the depth of experience that is in my opinion unmatched in the CT business market. Clients appreciate the thorough explanations of the options available to them, the professional execution of the contracted work and the cleanliness of the project when the work is completed. GO NEALON!!

Jonathan Knight Remodeling

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4.9 Customer Rating
Energize CT Network
1500+ Homes Upgraded
Licensed & Insured