Connecticut Homes Deserve Better
Air Sealing
Air leaks waste energy and comfort. Our expert sealing solutions close the gaps—literally.
Air Sealing Is the Unsung Hero of Energy Efficiency
The benefits of air sealing your Connecticut home.
Lower Heating and Cooling Bills
Air sealing stops conditioned air from leaking out and outside air from sneaking in—helping your HVAC system work less and your wallet breathe easier.
Keeps Out Unwanted Critters
Mice, bugs, and bats love tiny gaps in your attic or basement. Air sealing closes their favorite entry points—so your home stays yours (and not theirs).
More Comfortable Rooms, Year-Round
Hot upstairs in July, freezing downstairs in January? Air sealing balances the temperature game, so you’re not sweating one month and shivering the next.
Healthier Indoor Air
Sealing your home keeps out dust, pollen, pests, and car exhaust from the garage—especially important in older Connecticut homes with lots of cracks and crevices.
Better Performance from Your Insulation
Even the best insulation can’t do its job if air is bypassing it. Air sealing makes your insulation way more effective—like giving it a power-up.
Quieter Living Spaces
Gaps in your home don’t just leak air—they leak sound. Sealing them can noticeably reduce outside noise, whether it’s leaf blowers or loud neighbors.
Boosts Home Efficiency and Value
Air sealing is one of the easiest ways to meet energy codes, qualify for rebates, and make your home more attractive to future buyers who care about comfort and savings.
When to Air Seal Your Home?
Here are common scenarios when you would benefit from air sealing your home.
You’re Upgrading Your Insulation
Air sealing and insulation go hand-in-hand. If you’re blowing in cellulose or adding spray foam, don’t skip the air sealing—it’s what makes the insulation actually work.
You’ve Got Rodents or Bugs in the Basement
Mice, spiders, stink bugs—Connecticut basements are a magnet for critters. Air sealing those tiny cracks and gaps keeps them from turning your crawlspace into their condo.
You Live Near the Shoreline
Humidity, salt air, and wind-driven rain are a brutal combo. Shoreline homes leak like sieves if they’re not sealed tight. Air sealing helps protect against moisture, rot, and sky-high energy bills.
You’re Dealing with Moisture or Mold
Air leaks don’t just bring in cold air—they pull in humid air too, especially from basements, crawlspaces, or the outside. That moisture can lead to mold, rot, and allergy issues. Air sealing helps keep it out.
You’re Renovating or Replacing Siding/Roofing
Big exterior projects are the perfect time to air seal. It’s way easier to do when walls, roofs, or floors are already open—and it sets your home up for long-term comfort and efficiency.
Your Path to Superior Insulation Starts Here
Efficiency Meets Excellence, Every Step of the Way
Building science is complicated. Our estimators don't just tell you what we'll do, they explain why we're doing it.
We work with your timeline and availability. We typically schedule 2 - 4 weeks out
You will have a dedicated project lead and project manager who will walk you through every step of the process
Your home becomes your comfort zone, as you stop dealing with drafty rooms, inconsistent temperatures, and high energy bills.
The Nealon Difference
Where Historic Charm Meets Modern Efficiency – Without Compromise
Older Home Specialists
As EPA Lead-Safe certified contractors, we understand the unique challenges of insulating historic New England homes.
Proven Energy Savings
Our customers typically see a 30% reduction in energy costs after our professional insulation services. Your investment often pays for itself through years of lower utility bills.
Professional Energy Assessment Process
Every project begins with a thorough energy assessment to identify your home's specific needs.
Frequently Asked Questions?
What exactly is air sealing?
Air sealing is the process of closing cracks, gaps, and holes that let air leak in or out of your home. Common areas include attic hatches, rim joists, plumbing cutouts, and outlets. Proper air sealing boosts energy efficiency, improves comfort, and keeps out drafts and allergens.
How do I know if my home needs air sealing?
You may need air sealing if your home feels drafty, has uneven temperatures, or high energy bills. Signs also include pests in the basement or odors from the garage. Homes built before the 2000s often need sealing. A blower door test can confirm air leaks.
Where are the most common air leaks found?
You may need air sealing if your home feels drafty, has uneven temperatures, or high energy bills. Signs also include pests in the basement or odors from the garage. Homes built before the 2000s often need sealing. A blower door test can confirm air leaks.
Will air sealing really lower my energy bills?
Yes, air sealing can lower energy bills by up to 20%, according to the U.S. Department of Energy. Sealing leaks reduces HVAC strain, leads to more consistent temperatures, and extends the life of your heating and cooling systems.
What’s the difference between air sealing and insulation?
The main difference between air sealing and insulation is function: insulation slows heat transfer, while air sealing blocks airflow. Without sealing gaps, insulation can't perform fully—like wearing a winter coat unzipped. Both are needed for maximum comfort and energy efficiency.
Can I DIY air sealing, or should I hire a pro?
You can DIY small air sealing tasks like weatherstripping doors or sealing basement gaps. For full home sealing—especially in attics or crawlspaces—it’s best to hire a pro. Experts use tools like blower doors and infrared cameras to find hidden leaks and apply the right materials.
Is air sealing safe for older homes?
Yes, air sealing is safe for older homes and often essential. Many Connecticut homes built before the 1980s lack proper sealing, leading to drafts and moisture issues. Air sealing is hidden, preserves character, and protects your home’s structure while improving comfort and efficiency.
Will air sealing help with indoor air quality?
Yes, air sealing improves indoor air quality by blocking dust, pollen, exhaust, moisture, and even radon from entering through cracks. It helps reduce allergens, control humidity, and prevent mold—especially when paired with proper ventilation.
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!!!
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.
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!
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.
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!!
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!!
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