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Serving Springfield, IL and surrounding areas. (217) 572-9991
Your home may be full of gaps you have never seen. We find them with a blower door test and seal them so your heating and cooling system stops fighting a losing battle every month.
Air sealing services in Springfield locate and close the hidden gaps, cracks, and openings where outside air enters and conditioned air escapes — most residential jobs focus on the attic, basement, and crawl space, and are completed in one day including before-and-after blower door testing.
The biggest air leaks in most homes are not around windows and doors. They are in the attic floor, around pipes and wires that pass through ceilings, and at the sill plate where your walls meet the foundation. A trained contractor uses a blower door test to find leaks you would never locate on your own. Springfield's housing stock, much of it built before 1980, typically has significant leakage that has never been addressed.
Air sealing and insulation work best together. If you are also considering adding insulation to your walls, our basement insulation and attic air sealing pages describe how combining those services delivers the greatest year-round impact.
Springfield winters are genuinely cold, and if your gas bill climbs dramatically in January and February even when you keep the thermostat steady, air leakage is a likely cause. Heat is escaping through gaps you cannot see, and your furnace is running overtime to replace it. This is one of the clearest signs that air sealing would pay for itself relatively quickly.
If one bedroom is always colder than the rest of the house in winter, or one room feels muggy and stale in summer, that is often a sign of air movement through hidden gaps nearby. In Springfield's older neighborhoods, homes from the mid-20th century frequently have this problem in rooms above garages or at the ends of the house.
Hold your hand near an outlet or switch on an outside-facing wall on a cold day. If you feel a faint draft, that outlet is connected to a gap in the wall cavity that runs straight to the outside. This is one of the most common and fixable air leaks in older Springfield homes, and it is a strong signal that a blower door test would turn up significant additional leakage.
Look in your basement or utility room where pipes, cables, and wires come through the foundation or floor. If you can see daylight, feel a draft, or notice gaps around those penetrations, outside air is coming in freely. In Springfield's older homes, these gaps are nearly universal and are often the single largest source of air leakage in the entire house.
Every job starts with a blower door test. We temporarily mount a fan in one of your exterior doorways, depressurize the house, and use the resulting pressure difference to locate exactly where air is escaping. This gives us a specific map of your home's leaks so we seal the right spots, not just the obvious ones. After sealing, we run a second test to show you the measurable improvement. Many Springfield homeowners are surprised by how much leakage their home had and how big a difference proper sealing makes.
The sealing work itself focuses on attic floors and bypasses, basement rim joists, and any crawl space penetrations. We use foam, caulk, and other appropriate materials depending on the gap type and location. For homeowners who also need insulation work, we pair air sealing with our basement insulation service, which addresses the rim joist and foundation walls in a single visit. Our attic air sealing service targets the top-plate bypasses and ceiling penetrations that are the biggest source of heat loss in many Springfield homes.
All work is quoted in writing after the assessment. There is no obligation to proceed and no pressure to decide on the spot. We also note any Ameren Illinois rebates your project may qualify for, which can reduce your out-of-pocket cost before the job begins.
Best for homeowners who want to know exactly how much air leakage their home has before spending money.
Best for homes where heat loss through the ceiling is driving up winter gas bills.
Best for Springfield homes where basement cold air and drafts are a persistent comfort problem.
Best for older homes where leakage is significant throughout and a comprehensive approach is most cost-effective.
Springfield sits in central Illinois where winters regularly drop below 10 degrees and summers push past 90 degrees with high humidity. That swing of more than 100 degrees between the coldest and hottest days of the year means your home is constantly expanding and contracting, which opens small gaps over time. Homeowners here feel the effects of air leaks more intensely than people in milder climates, and the payoff from sealing them is correspondingly larger.
A significant share of Springfield's single-family homes were built before 1980. Homes of that era were not built with energy efficiency in mind. They relied on natural ventilation and cheap fuel, not tight construction. If your home is more than 40 years old, there is a very good chance it has gaps and cracks that have never been addressed. Homeowners in Springfield, Champaign, and Bloomington all face similar housing-age and climate conditions that make air sealing one of the most impactful upgrades available.
Ameren Illinois, which serves most of Springfield, offers rebates for air sealing work done by participating contractors as part of its Energy Efficiency Program. The U.S. Department of Energy estimates that properly air sealing and insulating a home can reduce heating and cooling costs by up to 15 percent. For Springfield homeowners whose bills spike hard in January and July, that adds up quickly. The ENERGY STAR Seal and Insulate program provides additional guidance on what a properly sealed home should achieve.
When you call, we ask basic questions about your home's age, size, and what problems you have noticed. This helps us come prepared with the right equipment. We respond within one business day and most Springfield contractors can schedule an initial visit within a couple of weeks.
On the first visit, we run a blower door test by mounting a fan in one exterior doorway to depressurize the house. This makes leaks easy to find and locate precisely. The assessment takes one to two hours, and we show you exactly where the biggest leaks are before explaining what sealing them involves.
After the assessment you receive a written estimate that breaks down what work will be done, where, and at what cost. We note whether the project qualifies for any Ameren Illinois rebates and what you need to do to claim them. There is no pressure to decide immediately.
On the work day, the crew seals gaps in your attic, basement, and crawl space using foam, caulk, and appropriate materials. After sealing, we run a second blower door test to show you the before-and-after numbers. We walk you through what was done and provide any rebate documentation needed.
No obligation and no pressure. We run the blower door test, show you exactly what we find, and give you a written quote including any Ameren rebates you qualify for.
(217) 572-9991We test before and after every air sealing job. That second test is the only way to confirm the work actually reduced leakage, and it gives you a number to point to rather than a contractor's word. Most air sealing companies in central Illinois skip the post-work test.
Much of Springfield's housing stock was built before modern energy standards existed. We work in these homes every week and know where the leaks hide: rim joists, attic bypasses, pipe penetrations in basements. We do not guess; we test and then we seal.
We are familiar with the current Ameren Illinois rebate structure for air sealing work. If your project qualifies, we handle the documentation so you do not have to navigate the paperwork yourself. Many Springfield homeowners recover a meaningful portion of the project cost through rebates.
We schedule assessments quickly and deliver written quotes before any work begins. Most Springfield homeowners receive a detailed, itemized estimate within a few days of their first call. You know the total cost before you commit to anything.
The Building Performance Institute sets the professional standard for residential air sealing and building science work. We follow those guidelines on every job and can walk you through exactly how blower door testing confirms results. If you want proof that the work was done correctly, not just a promise, call us.
Pair air sealing with basement and rim joist insulation to eliminate the cold-air source at the foundation.
Learn moreTarget the attic-floor bypasses and top-plate gaps where the most heat escapes in Springfield winters.
Learn moreFall appointments fill fast as homeowners prepare for winter. Call now or submit a request online to lock in your date before the cold arrives and your heating bill climbs.