Aeroseal Duct Sealing in Colorado Springs, CO
Stop Wasting Energy With Certified Aeroseal Duct Sealing
Your Ducts Are Leaking - and It’s Costing You More Than You Think
Duct leakage is one of the most common and least diagnosed problems in Colorado Springs homes. Most homeowners have never had their ducts tested — and they’re paying for it every month without knowing it.
You’re paying to heat and cool air that never reaches your living spaces
The average home loses between 20 and 40 percent of its conditioned air through leaks, gaps, and poorly sealed joints in the duct system. That’s air your furnace or AC already paid to heat or cool - escaping into your attic, your crawl space, or between your walls before it reaches a single register. Your HVAC system works harder to compensate, your energy bills stay higher than they should be, and your home still doesn’t reach the temperatures you’re paying for.
Hot and cold spots aren’t a thermostat problem - they’re a duct problem
If some rooms in your home are consistently too hot in summer or too cold in winter while others are comfortable, the usual culprit isn’t your thermostat or your HVAC system - it’s the duct system delivering conditioned air unevenly because of leaks. Adjusting the thermostat doesn’t fix an imbalanced duct system. It just makes the already-reaching areas worse while the problem rooms stay uncomfortable.
Leaky ducts are pulling outdoor pollutants, smoke, and allergens into your home
Duct leaks don’t just let conditioned air out - they let outdoor air in. Ducts that run through attics, crawl spaces, and wall cavities are surrounded by unconditioned air that carries dust, insulation fibers, mold spores, outdoor allergens, and during Colorado’s wildfire season, smoke particles. When those ducts leak, that air gets pulled into your living spaces with every HVAC cycle. Whole-home air purifiers help - but they’re fighting harder than they need to if the duct system has gaps that are actively letting contaminated air in.
Conventional duct sealing can’t reach most of the leaks
Traditional duct sealing requires a technician to physically access each section of ductwork - crawling through attics, accessing wall cavities, applying mastic or foil tape by hand to each visible joint. Most duct leaks are in sections that can’t be accessed without demolition. That’s why conventional sealing fixes some of the problem and leaves the rest. Aeroseal solves this by sealing from the inside, reaching every leak in the system regardless of where it’s located.
What Changes When Your Duct System Is Actually Sealed
A fully sealed duct system changes how your home feels, how efficiently your HVAC runs, and what you’re actually breathing every day.
Your energy bills drop - measurably, immediately
When conditioned air stops escaping before it reaches your living spaces, your HVAC system works less to maintain your target temperature. Most Colorado Springs homeowners who complete Aeroseal duct sealing see meaningful reductions in heating and cooling costs - up to $850 per year, or approximately 20% of utility costs - reflected in the next billing cycle.
Every room reaches the temperature it’s supposed to
With leaks sealed, airflow is restored across the whole duct system. Rooms that were chronically too hot or too cold come into balance. The thermostat controls the whole home the way it was always supposed to - not just the rooms closest to the air handler.
The air circulating through your home is cleaner
Sealed ducts eliminate the infiltration pathway that was pulling outdoor air - along with its dust, allergens, and wildfire smoke particles - into your home’s air supply. Combined with a whole-home air purifier, a sealed duct system represents a complete indoor air quality solution. The purifier cleans what circulates. Aeroseal closes the gaps that were undermining it.
You get a printed before-and-after report proving it worked
Before Aeroseal begins, we measure your home’s total duct leakage. After sealing is complete, we measure again. You receive a printed report showing the exact leakage rate before and after - in cubic feet per minute - so you know precisely how much was sealed. No guessing. No “we think it’s better.” Documented proof.
We’re One of the Only Aeroseal Certified Contractors in El Paso County
We’ve been inside Colorado Springs homes for over 25 years, and leaky ductwork is one of the most consistently overlooked sources of discomfort and high energy bills we encounter. Homeowners replace thermostats, upgrade insulation, and buy portable air purifiers - and nothing changes because the ducts are the actual problem. We know what Aeroseal can do for a home because we’ve seen the before-and-after numbers firsthand, and they’re not subtle.
A & Z Mechanical is one of the only Aeroseal certified contractors in El Paso County. Aeroseal certification requires specialized training and equipment - it’s not a service any HVAC company can offer without it. We’re also a Mechanical Class A Licensed, Armstrong Air Authorized Dealer with over 25 years of experience in Colorado Springs, a BBB A+ rating maintained for more than 20 years, and comfort advisors who are not paid on commission. Our recommendation to seal your ducts will be based on what your diagnostic test shows — not on what generates the highest invoice.
One of the Only Aeroseal Certified Contractors in El Paso County
Mechanical Class A Licensed
BBB A+ for 20+ Years and Family Operated Since 2001
The Aeroseal Process Is Simpler Than You’d Expect
You don’t need to move out, open walls, or prepare for a construction project. The entire Aeroseal process happens inside your existing ductwork, and most homes are done in a single visit.
Step 1: Schedule Your Duct Leakage Diagnostic
Call us or fill out our contact form. We’ll schedule a time that works for you. When we arrive, we start with a diagnostic test that measures your home’s current duct leakage rate - establishing the before number that your after report will compare against.
Step 2: We Seal Your Ducts from the Inside
We temporarily cover your registers, pressurize the duct system, and introduce the Aeroseal polymer sealant in aerosol form. As pressurized air pushes the sealant through the system, it finds every leak and bonds to the edges - sealing gaps from the inside without any access to individual duct sections. No demolition. No wall openings. No crawl space required.
Step 3: We Measure the Results and Give You the Report
Once sealing is complete, we run the leakage test again and compare the numbers. You receive your printed before-and-after report showing exactly how much leakage was sealed - in cubic feet per minute - before we pack up and leave. Most Colorado Springs homes see a 70 to 90 percent reduction in duct leakage in a single session.
Frequently Asked Questions About Aeroseal Duct Sealing in Colorado Springs
How is Aeroseal different from conventional duct sealing?
Conventional duct sealing requires a technician to physically access each duct section and apply mastic compound or foil tape by hand to visible joints. Most duct leaks are in sections that can’t be accessed without opening walls or crawling through tight spaces - so conventional sealing fixes the accessible leaks and leaves the rest. Aeroseal works from the inside: the duct system is pressurized and a non-toxic polymer sealant is introduced in aerosol form. It travels through the system, finds every leak, and bonds to the edges — sealing gaps regardless of where they are or whether a technician can physically reach them. The result is documented with a before-and-after measurement report that conventional sealing can’t provide.
How much duct leakage can Aeroseal actually fix?
Most Colorado Springs homes that go through the Aeroseal process see a 70 to 90 percent reduction in duct leakage, measured before and after in cubic feet per minute. The exact result depends on the condition of your duct system - homes with older, more deteriorated ductwork typically have more leakage to start and see more dramatic percentage reductions. The before-and-after report you receive documents the exact numbers for your specific home, so the result isn’t an estimate - it’s a measurement.
Does Aeroseal improve indoor air quality?
Yes, meaningfully. Leaky ducts running through attics, crawl spaces, and wall cavities don’t just let conditioned air out - they let outdoor air in. That infiltrating air carries dust, allergens, insulation particles, mold spores, and during Colorado’s wildfire season, fine smoke particles directly into your living spaces with every HVAC cycle. Aeroseal closes those infiltration pathways entirely. For Colorado Springs homeowners who also have whole-home air purifiers or humidifiers, sealing the duct system makes those systems dramatically more effective by eliminating the source of contamination they were working against.
How long does the Aeroseal process take, and do I need to leave my home?
Most residential Aeroseal jobs in Colorado Springs are completed in a single visit of four to eight hours, depending on the size of the home and the extent of duct leakage. You do not need to vacate the home during the process. The sealant is a UL-tested, non-toxic polymer - there are no harmful fumes or chemicals involved. We temporarily cover your registers during the sealing phase and restore normal system operation before we leave. Most homeowners are home throughout the process without any disruption to their daily routine.
How long does Aeroseal last, and what warranty comes with it?
Aeroseal sealant has been independently tested to last 40 years under normal HVAC operating conditions. Every A & Z Mechanical Aeroseal installation comes with a 10-year warranty on the sealant material and workmanship. The before-and-after report you receive at the end of the job documents your starting leakage rate and your sealed leakage rate, giving you a permanent record of a home performance improvement most buyers have never seen. If you ever sell your home, that report is a tangible documentation of the sealed duct system that adds measurable value.
Aeroseal Duct Sealing in Colorado Springs - Certified, Proven, and Backed by Science
A & Z Mechanical is one of the only Aeroseal certified contractors in El Paso County, and Aeroseal duct sealing is one of the most technically validated home performance improvements available to Colorado Springs homeowners. The technology was developed at Lawrence Berkeley National Laboratory and is backed by both the U.S. Department of Energy and the EPA. The sealant is a UL-tested, non-toxic polymer that bonds to duct leak edges from the inside - sealing gaps in sections of ductwork that no conventional hand-sealing approach can reach. Every installation comes with a before-and-after duct leakage measurement report and a 10-year warranty on the sealant, which has been independently tested to last 40 years.
For Colorado Springs homeowners, the energy math is straightforward. The average home loses 20 to 40 percent of its conditioned air through leaky ducts before that air reaches a single living space. Your furnace or AC is running longer cycles, working harder, and consuming more energy to compensate for air that’s escaping into unconditioned spaces. Aeroseal sealing typically delivers up to 90 percent reduction in duct leakage and up to $850 per year in energy savings - results that are documented in the printed report you receive at the end of every job, not estimated after the fact.
Beyond energy efficiency, the indoor air quality case for Aeroseal is one that most Colorado Springs homeowners haven’t considered. Leaky ducts running through attics, crawl spaces, and wall cavities don’t just let conditioned air out — they let outdoor air in. Every HVAC cycle creates pressure that pulls unconditioned air from surrounding cavities into your duct system and into your living spaces. That air carries dust, insulation fibers, mold spores, outdoor allergens, and during Colorado’s June-through-September wildfire season, fine smoke particles. Aeroseal sealing closes those infiltration pathways entirely. For homes that also have whole-home air purifiers or humidifiers, a sealed duct system makes those investments dramatically more effective — the purifier isn’t fighting against a system that’s constantly introducing new contaminants.
No other HVAC contractor in the primary Colorado Springs competitive set holds Aeroseal certification. Home Heating Service lists generic duct sealing as a service but offers no Aeroseal-specific content, no certified process, and no before-and-after measurement report. The remaining four profiled competitors don’t address duct sealing in any form. If you want Aeroseal duct sealing done by a certified contractor with 25-plus years of Colorado Springs experience and a documented track record of results, A & Z Mechanical is the only call to make in El Paso County.
What Colorado Springs Homeowners Say About Our Aeroseal Duct Sealing Services
Your Ducts Have Been Leaking for Years. One Visit Fixes It for Good.
Leaky ducts are costing you money every single month - and affecting the air quality of every room in your home. A & Z Mechanical is one of the only Aeroseal certified contractors in El Paso County, and we prove our results with a printed before-and-after report. Over 25 years of Colorado Springs experience. Upfront pricing. 100% satisfaction guaranteed.