Stay Cool Climate Control

Effective Air Sealing Services

Drafty rooms, uneven temperatures, and high energy bills can leave your home feeling less comfortable and more expensive to maintain. These issues are often caused by small cracks, gaps, and leaks in walls, ceilings, and attics that allow conditioned air to escape. Over time, this air loss forces your HVAC system to work harder, driving up costs and wearing out your equipment faster.

Stay Cool Climate Control provides professional air sealing services in O’Fallon, MO, and the Greater St. Charles County area to stop leaks at the source. Our team identifies problem areas with precision and applies proven techniques to seal them, reducing wasted energy and improving year-round comfort. With tailored solutions and a commitment to lasting results, we help homeowners enjoy lower utility bills, better HVAC performance, and a healthier indoor environment. Call today to schedule your air sealing service and start saving energy with a more comfortable home.

hand air sealing a vent on exterior of home

What Is Air Sealing and Why Is It Important?

Air sealing is the process of closing gaps, cracks, and leaks throughout your home that allow conditioned air to escape and outside air to enter. These leaks are often found in attics, basements, around windows and doors, and even near ductwork. By addressing these hidden problem areas, air sealing services improve your home’s overall energy efficiency and reduce strain on your heating and cooling system.

Proper air sealing saves money on utility bills and creates a healthier and more comfortable indoor environment. With fewer drafts and better temperature control, your home feels consistently comfortable in every season. It also helps reduce indoor pollutants, allergens, and humidity issues that can sneak in through leaks. In short, air sealing is one of the most cost-effective ways to upgrade both your comfort and your home’s efficiency.

Our Comprehensive Air Sealing Process

Stay Cool Climate Control provides detailed air sealing services that eliminate drafts, improve efficiency, and make your home more comfortable year-round. Many homeowners first discover the need for air sealing during an energy audit, which pinpoints exactly where leaks are occurring. Each service we provide is performed with precision and tailored to your home’s unique needs. Here’s an overview of what we offer:

Home Energy Inspections

Our home energy inspections are the first step in identifying where your home is losing conditioned air. Using advanced testing methods, we locate gaps and leaks that contribute to higher energy bills and reduced comfort. This evaluation helps us create a customized plan for sealing your home effectively. With an accurate assessment, you’ll know exactly where improvements are needed.

Attic and Basement Air Sealing

Attics and basements are two of the most common areas for air leakage. Our attic and basement air sealing servicesaddress these problem spots with professional-grade materials that stop drafts and reduce energy loss. Sealing these areas helps your HVAC system maintain consistent temperatures throughout the home. The result is a more efficient system and a more comfortable living environment.

Ductwork Air Sealing

Leaky ducts can waste a significant amount of conditioned air before it ever reaches your living spaces. Our ductwork air sealing services restore proper airflow and reduce the workload on your heating and cooling system. By sealing leaks in your duct system, we help improve efficiency, comfort, and indoor air quality. A well-sealed duct system ensures every room gets the air it needs.

Whole-Home Air Sealing

For maximum results, we offer whole-home air sealing services that cover every part of your house. From windows and doors to walls and ceilings, we seal leaks that contribute to drafts and wasted energy. This service is designed to create an efficient, consistent environment where your HVAC system can work at its best. With whole-home air sealing, you’ll enjoy lower energy bills and long-term comfort.

Benefits of Air Sealing Services

Investing in professional air sealing services offers advantages that go far beyond stopping drafts. By addressing hidden leaks throughout your home, air sealing helps your HVAC system operate more efficiently, lowers monthly utility bills, and creates a consistently comfortable living environment. It also contributes to healthier indoor air by reducing the entry of dust, allergens, and pollutants. With expert air sealing from Stay Cool Climate Control, you’ll enjoy immediate improvements and lasting results that protect both your comfort and your energy budget.

  • Lower energy bills: Reduce wasted energy by preventing conditioned air from escaping.
  • Increased comfort: Eliminate cold drafts and hot spots for even temperatures throughout your home.
  • Extended HVAC lifespan: Reduce strain on your heating and cooling systems by improving efficiency.
  • Healthier indoor air: Limit the infiltration of outdoor allergens, dust, and pollutants.
  • Year-round performance: Keep your home warm in the winter and cool in the summer with one simple service.

Schedule Your AC Maintenance With Us Today!

Why Homeowners Trust Us With Air Sealing

Air sealing is about creating a healthier, more efficient, and more comfortable home environment. At Stay Cool Climate Control, we’ve helped homeowners in O’Fallon, MO, and the Greater St. Charles County area enjoy the benefits of professional air sealing services by focusing on quality and long-term results. Our approach combines advanced testing methods with skilled workmanship and a customer-first attitude, ensuring every job is done right the first time. Homeowners trust us because we treat every project with the same care and attention we’d give our own homes.

  • Advanced Diagnostic Tools: We use proven methods like blower door testing and thermal imaging to find hidden leaks.
  • Tailored Solutions: Every home is different, so we create sealing plans that fit your specific needs and budget.
  • Proven Materials: Our air sealing services rely on professional-grade products designed for durability and performance.
  • Experienced Technicians: Our team brings years of hands-on expertise to every inspection and repair.
  • Commitment to Comfort: We don’t just reduce energy waste, we make your home more livable in every season.

Seal in Comfort With Professional Air Sealing Services

Don’t let drafts, leaks, and high energy bills control your home’s comfort. Stay Cool Climate Control delivers professional air sealing services in O’Fallon and the Greater St. Charles County area, designed to stop energy loss and improve efficiency from top to bottom. From attics and basements to ductwork and walls, our team ensures every seal makes a difference. Call today to schedule your air sealing service and start enjoying a home that’s more comfortable, efficient, and cost-effective all year long.

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Air Purification System
Offer cannot be combined with any other promotions, discounts, or special offers. Terms and conditions may apply.
Expires: Feb 28, 2026

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Testimonials

Hear from Our Satisfied Customers

Travis and Jacob and the other tecnicians were polite, and knowledgeable. They explained what they were doing. I now have a working furnace. They came in a timely manner.
Kathy Gregory
6 days ago
Travis and Jacob and the other tecnicians were polite, and knowledgeable. They explained what they were doing. I now have a working furnace. They came in a timely manner.
Kathy Gregory
1 week ago
Installers were very noticeable about the installation.explain in detail about My New unit I'm very pleased with My New unit
Julius James
1 week ago
NEW - update! 02/10/2026 : Dalton came out and was on time, courteous, and very well knowledgeable about my issue. He prescribed the right maintenance for my unique situation and made it simple to decide next steps. In & out! Also want to shout out Cindy for her great customer service and promotion of Stay Cool’s $79 furnace special right now! No pushy sales just quality maintenance and support from a great team of experts! Would highly recommend! ————————————— (Past experience) Jeremy & Nate were both professional and very informative of options I have for Replacement smart thermostat in addition to overall, maintenance tips. They had a pleasant, friendly nature and I would recommend them to neighbors and friends. I appreciated the ease of scheduling and the follow-up call from the office prior to the techs’ arrival too. Definitely a company I will keep in my pocket for future HVAC services.
Royelle Robertson
2 weeks ago
Travis , the technician, came out in very polite and professional and identified 2 problems I was experiencing with my furnace. The last few days have been very chilly. He stated what was needed and the price it would involve. With recommendations to plan on if other problems arise. He had to gather equipment needed to get the repair done he was quick and fastidious in his service and informed me when it was completed. Was very happy with the results. My furnace is running again and I’m warming back up. Thank you Stay Cool HVAC for you service.
Ethel Norfort
2 weeks ago
Brandon and the other guy were great! Quick install, reasonable pricing, and went over everything done. Definitely recommend.
John Jacobi
2 weeks ago
Jake and Trey were fantastic. Highly skilled and efficient and super nice dudes. We have used Stay Cool multiple times now including a furnace install. Their quote was spot on, they showed up when they said they would. Great experience. Travis was also super helpful in navigating a new furnace. We will be using them again when our other furnace finally dies. Thank you!
Aaron Bennet
2 weeks ago
Excellent job and detail replacing my HVAC. They treated me like family from pricing to installation and service.
Daniel Rosenthal
2 weeks ago
Dalton was amazing, couldn't ask for a better tech!
Keith Nemnich
3 weeks ago
Dalton was amazing!!!
Christina Nemnich
3 weeks ago
Travis was great! He not only worked quickly, but talked me through everything he was doing, gave maintenance tips and made sure I knew everything I needed to know before he left! He was friendly, prompt, and so helpful! I would absolutely recommend StayCool for any HVAC needs!
Jenna Whitmore
3 weeks ago
Always a great service from these guys. Jacob was out and went through my furnace and cleaned everything up. Very professional and easy to talk to. I’ve had them servicing my hvac for about 6 years now and they have always been able to make things work or work better.
Bailey Dickherber
3 weeks ago
On Jan 16, 2026 I called Stay Cool Climate Control to get a quote on replacing our old HVAC because the furnace was showing signs of imminent failure. I called the office in the morning, and Jeremy was able to come that afternoon. Jeremy looked at the old system and offered us multiple replacement choices. A few days later, after checking with 2 other companies, we concluded that Stay Cool was the best choice for us in terms of cost, efficiency, and equipment quality. We are not disappointed. Installation was scheduled for the following Tuesday. Brandon, Dalton, and Trey arrived on time early that morning, and after seeing the old system began removing it. Even though the outside temperature was in the teens and there was snow on the ground they worked tirelessly all day. By late that afternoon we had a new, highly efficient HVAC system up and running. Our thanks also go to Carter, who has answered many questions and was able to make the quick schedule possible.
Larry Pangborn
3 weeks ago
Very professional, fixed fast, highly recommend.
Scott Zoellner
3 weeks ago
HIGHLY Recommend. Our furnace quit right as a winter storm rolled in, and they sent someone out within an hour! Dalton figured out our issue and got our unit to work for just a bit longer until our replacement could be scheduled. Jake and Skylar handled our replacement. The office will send names and pictures of who is coming to your home, which made me feel very safe. Every person we encountered on the phone or in person was professional, friendly, and knew what they were doing. Pricing was fair and transparent, and they helped us get financing. Never felt rushed or pressured. A+ communication.
Lindsey Vazquez
3 weeks ago
On time arrival to service my furnace for the winter. Travis was very courteous. He carefully reviewed his findings and answered all of my questions. As a realtor and homeowner, I strongly suggest that your HVAC system be checked, serviced and cleaned twice yearly. Use a professional like Stay Cool Climate Control.
Mike Bronowicz
1 month ago
Brandon and Trey were awesome!!!
Anne Seiler
1 month ago
Jacob A was friendly and knowledgeable! Highly recommend this family owned company! Thank you, Tim & Cheri Dickherber/ Missouri Irrigation
Cheri Dickherber
1 month ago

    Schedule Your Service with Stay Cool Climate Control

    Don’t hesitate to reach out to us for the comprehensive solutions you need. We are happy to discuss any concerns you may have and will provide the honest, professional advice you need to help you make the best decision for your home. Contact us today to schedule a free second opinion, request an estimate, or book an immediate appointment for heating and air conditioning services in O’Fallon, Missouri.