Overview
If your home has uneven temperatures from room to room, stubborn dust, or higher-than-expected energy bills, leaky ducts are almost certainly the cause. Duct systems in most Kansas City homes lose between 20% and 30% of the conditioned air they carry before it ever reaches the living space. That means for every dollar you spend on heating and cooling, up to 30 cents is disappearing into your attic, crawl space, or walls before it warms or cools you. At Green Seal Energy, we stop that waste with professional residential duct sealing. As EVERGY’s #1 Partner and an Aeroseal Authorized Dealer, we combine 20+ years of Kansas City home performance expertise with the industry’s most proven sealing technologies. We seal both accessible ductwork (using professional-grade mastic and metal-backed tape) and inaccessible runs (using the patented Aeroseal process). Our technicians deliver verifiable results, cutting the leakage we measure, then measure again to show you exactly how much waste you’ve eliminated. The result is a more comfortable, efficient, and healthier home — guaranteed.
Education
Residential duct sealing is the process of closing gaps, holes, and disconnected joints in your home’s ductwork to prevent conditioned air from escaping before it reaches your rooms. Your forced-air HVAC system uses a network of ducts to carry heated or cooled air from the furnace or air conditioner to each register. When these ducts have leaks — and the vast majority do — that air leaks out into unheated spaces like your attic, crawl space, or wall cavities. Your HVAC system runs longer to compensate, consuming more energy and delivering less air to the rooms that need it. Professional duct sealing addresses every leak, from the supply plenum and return drops to each branch run and register boot. For accessible ducts in basements, garages, or mechanical rooms, our technicians use high-temperature mastic sealant, not common duct tape which fails over time. For ducts hidden behind drywall or under insulation, we use the Aeroseal process, which pressurizes the system and seals every leak from the inside out. The result is a duct system that delivers the full volume of conditioned air to every room — not to your attic.
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
Sealing ducts typically cuts heating and cooling bills by 10–30% — savings that start immediately.
Eliminate Uneven Rooms
Stop the frozen bedroom and the sweltering living room. Sealed ducts deliver consistent airflow.
Reduce Dust
Leaky ducts pull air from dirty attics and crawl spaces. Sealing stops the dust at its source.
Extend HVAC Life
Less runtime means less wear on your furnace and AC. Sealing helps your system live longer.
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
Most standard single-family homes in Kansas City fall within this range. Investment varies with home size, number of HVAC systems, duct accessibility, and the severity of leakage found during our diagnostic testing.
Measurable Verifiable Results
We test before, seal thoroughly, and test again. You receive a report showing exactly how much leakage we eliminated — not just a promise.
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.
