Serving New Haven, Old Saybrook, New London, and surrounding shoreline communities
(860) 669-0333. Mon - Fri 8:00 AM - 5:00 PM

Insulating Historic Homes Without Compromise

Every historic home tells a story. We make sure your insulation upgrade improves performance—without rewriting what makes your home yours.

Get Your Free Estimate
Takes 30 mins
Zero Obligation
Same Day Quote
White colonial house with black shutters, a black front door, two chimneys, surrounded by autumn trees and a stone pathway.
5.0 Customer Rating
EnergizeCT Network
Licensed & Insured

We Know What Historic Homes Need

After 48 years insulating Connecticut homes, we understand the specific challenges of a Historic property — and exactly how to fix them.

1

Full Home Evaluation — Not Assumptions

We assess every area of your home — attic, walls, basement, crawlspace — to find exactly where energy is escaping and comfort is suffering.

2

Update Outdated Insulation

Many Connecticut homes still have insulation installed decades ago. We identify what's outdated, poorly installed, or simply missing.

3

Comfort-First Recommendations

We prioritize your family's comfort — addressing cold rooms, drafts, and temperature inconsistencies before they become daily frustrations

4

Transparent Pricing

Our free estimates are detailed, honest, and obligation-free. We explain every recommendation and answer every question.

A smiling couple stands in a room under renovation with paint samples on the walls, holding floor plans and surrounded by moving boxes labeled 'Living Room' and paint cans.
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Our Services

Why the Connecticut community has trusted us for 48 years

Insulation Type
Area of Home
Additional Service
Cellulose Insulation

Cellulose Insulation

Homeowners who want high performance, eco-friendly insulation that keeps pests out and bills down.
Fiberglass Insulation

Fiberglass Insulation

Budget-conscious folks who need a quick, solid solution for big areas like walls or basements.
Spray Foam Insulation

Spray Foam Insulation

Homeowners tackling air leaks, moisture problems, or new builds where long-term performance is key.
Mineral Wool Insulation

Mineral Wool Insulation

Mineral wool insulation offers durable thermal protection while resisting fire, moisture, and noise, helping improve comfort and energy efficiency throughout your home.
Batt Insulation

Batt Insulation

Batt insulation provides a reliable way to improve thermal performance in walls, ceilings, and floors, helping reduce energy costs while maintaining consistent indoor comfort.
Rigid Foam Board

Rigid Foam Board

Rigid foam board insulation adds a continuous layer of thermal protection, helping reduce heat loss, improve energy efficiency, and maintain more stable indoor temperatures.
Blown-in Insulation

Blown-in Insulation

Homeowners who want fast, seamless coverage that fills every crack and corner—perfect for attics, dense-packing walls, and boosting comfort without tearing the house apart.
Attic Insulation

Attic Insulation

Upgrading your attic insulation will ensure your home stays warm in the winter and cool in the summer. Our insulation also prevents mice from making a home in your home.
Basement Insulation

Basement Insulation

Is your basement too cold in the winter? This is usually due to a lack of insulation. We can make your basement more liveable.
Garage Insulation

Garage Insulation

Garage insulation helps regulate temperatures, making the space more comfortable year-round while reducing energy costs.
Ceiling Insulation

Ceiling Insulation

Ceiling insulation helps prevent heat loss and keeps indoor temperatures more consistent, improving comfort while lowering heating and cooling costs.
Wall Insulation

Wall Insulation

Complete wall cavity coverage for homes and commercial buildings. Our professional installation maximizes energy efficiency and comfort in any structure
Crawl Space Insulation

Crawl Space Insulation

Crawl spaces are often not insulated properly. Ensuring the crawl space is insulated helps prevent moisture and heat loss for the home
Crawl Space Encapsulation

Crawl Space Encapsulation

Homeowners who want to stop moisture, mold, and musty smells at the source—turning a damp, drafty crawl space into a clean, controlled foundation that protects the whole house.
Insulation Removal

Insulation Removal

Insulation removal clears out damaged or outdated material, improving air quality and making way for fresh, energy-efficient upgrades.
Mold Prevention & Treatment

Mold Prevention & Treatment

Mold prevention helps protect your home from moisture damage by controlling humidity and sealing air leaks that allow condensation and mold growth.
Air & Vapor Barriers

Air & Vapor Barriers

Air and vapor barriers help control air leaks and moisture movement inside your home’s walls and ceilings, improving energy efficiency while reducing the risk of condensation and mold.
Air Sealing

Air Sealing

Proper floor insulation is essential for maintaining a comfortable home by preventing heat loss through the floors, reducing energy costs, and minimizing drafts.
Attic Ventilation

Attic Ventilation

Attic ventilation prevents moisture buildup and balances temperatures, protecting your roof while improving comfort and energy efficiency year-round.
Request Free EstimateGet in Touch: (860) 669-0333
Takes 30 mins
Zero Obligation
Same Day Quote

Service Area

New Haven, Hartford, New London and everything in between.

Primary Service Areas

Branford
Chester
Clinton
Colchester
Cromwell
Deep River
Durham
East Haddam
East Hampton
East Haven
East Lyme
Essex
Glastonbury
Groton
Guilford
Haddam
Hamden
Hartford
Higganum
Ivoryton
Killingworth
Madison
Meriden
Middlefield
Middletown
Moodus
Mystic
New Haven
New London
Newington
Niantic
North Branford
North Haven
Old Lyme
Old Saybrook
Orange
Pawcatuck
Portland
Rocky Hill
Simsbury
Stonington
Wallingford
Waterford
West Hartford
West Haven
Westbrook
Westerly
Wethersfield

Why Choose %wNealonw% ?

Where Experience Meets Innovation in Home Comfort

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

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

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

Cozy Winters, Cool Summers - Guaranteed

Experience year-round comfort with our precision installation guarantee

Your Home Deserves The Royal Treatment

Careful, clean, and respectful - we treat every project like it's our own family's home

Natural and
Eco-Friendly Products

Our products don't emit dangerous chemicals into your home

Trusted by Your Neighbors Since 1977

Join thousands of happy Connecticut homeowners who sleep better in their cozy homes

Get Your Free EstimateGet in Touch: (860) 669-0333
Takes 30 mins
Zero Obligation
Same Day Quote

Let's Work Together

Ready to transform your home into an energy-efficient haven? Schedule your free energy assessment today and experience the Nealon difference for yourself.

Request Free EstimateGet in Touch: (860) 669-0333
5.0 Customer Rating
EnergizeCT Network
1500+ Homes Upgraded
Licensed & Insured