Overview
Building a new home in the Kansas City metro means making decisions that will impact your comfort and monthly expenses for decades. One of the most critical — and often overlooked — choices is how tightly your home’s building envelope is sealed. At Green Seal Energy, we’ve spent over 20 years helping KC-area builders and homeowners achieve industry-leading airtightness using proven materials and precision techniques. As an AeroBarrier-certified installer, our team seals new construction projects to meet or exceed the most stringent energy codes. From pre-drywall air sealing to comprehensive blower door testing, our process delivers verifiable results that reduce energy waste and enhance indoor comfort. Whether you’re a building code in Overland Park or a homeowner building your forever home in Lee’s Summit, investing in professional, code-compliant air sealing during new construction is one of the highest-ROI decisions you’ll make.
Education
New construction air sealing is the practice of methodically eliminating gaps, cracks, and penetrations in a home’s building envelope — the barrier between conditioned indoor space and unconditioned outdoor air — before drywall and finishes are installed. Unlike retrofitting an existing home, sealing during new construction allows technicians to access every potential leakage point, from rim joists and top plates to plumbing and electrical penetrations. Using a combination of spray foam, caulk, gaskets, and advanced aerosol sealing (AeroBarrier), we ensure conditioned air stays where you want it — inside your home. For builders, meeting code often means demonstrating a blower door result not greater than 3–7 ACH50 depending on jurisdiction. Our team routinely achieves results that exceed these minimums, helping you earn energy certifications and build a reputation for quality.
We provide a Duct Leakage Test Report and Certificate showing duct leakage before and after sealing (see sample attached).
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Our Process
Why Green Seal Energy
Since 2004, Green Seal Energy has been the Kansas City metro’s go-to partner for home performance, energy efficiency, and HVAC services. Our credentials aren’t just marketing — they’re the result of 20+ years of consistent excellence.
Founded in 2004, Green Seal Energy has served tens of thousands of Kansas City homes across all neighborhoods and vent configurations.
As a certified Aeroseal Authorized Dealer, our technicians are trained to the highest industry standards in duct and vent sealing technology.
Recognized by EVERGY as their top-ranked energy efficiency partner in the Kansas City region — a distinction earned through performance and customer results.
Need to spread the cost? We offer flexible financing through Wisetack with 0% APR options. Check your rate in seconds — no hard credit pull required.
Benefits
Lower Energy Bills
A tightly sealed envelope reduces HVAC workload, potentially saving 15–21% annually on heating and cooling costs.
Improved Comfort
Eliminate drafts, cold spots, and outdoor noise. A sealed home feels warmer in winter and cooler in summer.
Healthier Indoor Air
A sealed envelope keeps dust, pollen, and outdoor pollutants from infiltrating your living space.
Higher Resale Value
Homes with verified energy performance command premium prices in the Kansas City real estate market.
Pricing & Cost
Vent length
Primary factor
Exit type (wall vs. rooftop)
+$30–$60 for roof
Vent material (flex vs. rigid)
Minor impact
Level of lint buildup
May add time
Number of bends/elbows
Minor impact
Bird nest or blockage removal
+$25–$75
Typical investment range for new construction projects in Kansas City. Basic caulking and gasketing starts around $400. Advanced envelope sealing with AeroBarrier and full blower door verification ranges higher. We provide firm quotes before you frame.
Blower Door Verified Results
Every project includes post-seal blower door testing. You receive a verified leak rate and a certification report for the building department.
Maintenance depends on your lawn type and needs. Typically, weekly orbi-weekly visits keep your yard healthy and looking great.
Schedule your free evaluation and start saving on energy today.
