Permitted & Code-Compliant
Every install is 100% code-compliant and permitted. No shortcuts that turn into a failed inspection — or a denied insurance claim — years later.
Air Duct Sealing
Where a Third of Your Cooling Goes
Duct leakage is the most expensive HVAC problem nobody can see. Industry testing consistently finds typical homes losing 20 to 30 percent of conditioned air through leaks, disconnected joints and poorly sealed boots — and in the Hill Country that air is usually being lost into a 150-degree attic.
You paid to cool it. It never reaches a room. The system runs longer to make up for it, and the attic gets a little hotter, which makes the next hour worse.
- Licensed Texas HVAC TACLA108651E — permitted, code-compliant work.
- Local since 1986 Nearly four decades on Hill Country systems.
- Backed in writing If it is not right, we come back and make it right.
What to Watch For
Signs of Leaking Ductwork
Very common in homes over about fifteen years old.
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Rooms that never match the thermostat
Classic sign that conditioned air is not arriving.
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High bills for the square footage
You are conditioning the attic as well as the house.
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Dusty rooms despite good filtration
Leaks pull unfiltered attic air into the supply.
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An attic that is hot even with ventilation
Leaking supply air adds to the load.
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Weak airflow at the far end of the house
Pressure lost through leaks before it reaches the last room.
What We Do
Duct Sealing Services
Tested before and after, so the improvement is a number.
- Duct leakage testing Measured, so you know what you started with and what you got.
- Manual sealing Mastic on accessible joints, boots and plenums.
- Aeroseal Sealing from the inside where ducts cannot be reached.
- Return-side sealing Often worse than the supply side and usually ignored.
- Insulation on duct runs Sealed but uninsulated duct in a hot attic still loses.
How It Works
How We Approach Air Duct Sealing
The right answer depends on your home — so we start there.
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Assess the Home
We look at how your home is actually built and used before recommending equipment. The same product is right in one house and wrong next door.
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Recommend and Price Clearly
You get honest options and written pricing, including the option of doing nothing yet if that is the right call.
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Install to Code
Permitted where required, installed to manufacturer spec, and tested before we hand it over.
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Verify and Support
We confirm it performs the way we said it would, and we are local if anything needs attention later.
Why Choose 72 Degrees
Fully Stocked Trucks
Our trucks carry the parts the Hill Country actually needs, so most repairs are finished on the first visit instead of waiting on a return trip.
Fair, Upfront Pricing
You approve the price before we start. No surprises on the invoice, and no overtime premium for nights or weekends.
Written Guarantees
Our work is backed in writing. If something is not right, we come back and make it right.
Available 24/7
A 100-degree August afternoon and a February hard freeze do not keep business hours. Neither do we.
The Wizards of Comfort
Serving Fredericksburg, Kerrville, Boerne and the surrounding Hill Country since 1986 — nearly four decades in the same communities.
Questions About Air Duct Sealing?
Talk to a licensed local technician — no pressure, no obligation.
What Our Customers Say
Don't just take our word for it — hear from our satisfied customers
★★★★★
I call 72 Degrees for ALL my AC, HVAC, and plumbing needs, large and small. They provide reliable and friendly service, indeed!
Maintenance Membership
Join the Care Club
Total home comfort care, on a schedule.
Members get priority scheduling, seasonal HVAC tune-ups, an annual whole-home plumbing safety inspection, and exclusive discounts — for less than the cost of a single emergency call.
- Priority scheduling
- Seasonal HVAC tune-ups
- Annual safety inspection
- Exclusive member discounts
- Free dispatch on repairs
- No long-term contracts
Air Duct Sealing — Common Questions
Can Duct Sealing Improve My Home’s Indoor Air Quality?
How Duct Sealing Improves Indoor Air Quality
Leaky ductwork doesn’t just waste energy, it can also pull in dust, insulation particles, and other contaminants from areas like attics, crawl spaces, or wall cavities. When your ducts are sealed, those unwanted pollutants are kept out of your airflow. Here’s how duct sealing helps improve air quality:
- Prevents dust and allergens from entering the duct system
- Reduces the spread of pollutants throughout your home
- Improves filtration by keeping air moving through the proper system path
- Supports better overall airflow and ventilation
In many homes across the Texas Hill Country, ductwork runs through hot, dusty attic spaces. If there are leaks, your system can pull in that air and circulate it throughout your home. Sealing ducts helps ensure the air you’re breathing is coming through your filtration system, not from unconditioned spaces. 72 Degrees Texas can inspect your ductwork and recommend sealing solutions to help homeowners in Fredericksburg, Kerrville, and surrounding areas improve both comfort and indoor air quality.
How Much Does Aeroseal Duct Sealing Cost?
What To Expect For Aeroseal Duct Sealing Costs
Aeroseal duct sealing is priced based on your home’s size, the condition of your ductwork, and how complex your system is. Most homeowners can expect to pay anywhere from $1,500 to $4,000 for a typical home, though larger or more complex systems can reach $6,000 or more. Several factors influence the total cost:
- Size of your home and total ductwork
- Amount of air leakage that needs to be sealed
- Accessibility of ducts in attics, crawl spaces, or walls
- Whether testing and verification are included
- Local labor rates in the Texas Hill Country
Aeroseal is often more efficient than traditional duct sealing because it seals leaks from the inside, including areas that are hard to reach manually. The process typically includes pre-testing, sealing, and post-testing to verify results. For homeowners in Fredericksburg, Kerrville, and surrounding areas, sealing ducts can improve airflow, increase energy efficiency, and reduce strain on your HVAC system. The most accurate way to get pricing is through a professional evaluation, since every home’s duct system is different.
What Are The Benefits Of Professional Duct Sealing For My Home?
Why Professional Duct Sealing Matters
Professional duct sealing addresses hidden air leaks that can impact your home’s comfort, efficiency, and air quality. When ducts leak, conditioned air escapes into areas like attics or crawl spaces, forcing your HVAC system to work harder than necessary. Here are the key benefits of professional duct sealing:
- Improved energy efficiency by reducing air loss
- Lower energy bills from a more efficient HVAC system
- More consistent temperatures throughout your home
- Better airflow to every room
- Reduced strain on your heating and cooling equipment
- Improved indoor air quality by keeping dust and pollutants out
In the Texas Hill Country, where ductwork is often exposed to extreme attic heat, sealing leaks can make a noticeable difference in both comfort and system performance. Professional sealing methods, including advanced options like Aeroseal, can reach areas that are difficult to access and provide long-lasting results. 72 Degrees Texas helps homeowners in Fredericksburg, Kerrville, and surrounding areas improve their HVAC system performance with expert duct sealing solutions tailored to their home.
What Is Aeroseal Duct Sealing?
How Aeroseal Duct Sealing Works
Aeroseal is a modern method of sealing air leaks in your duct system from the inside, without needing to tear into walls, ceilings, or ductwork. Instead of manually sealing ducts, the process uses a specialized machine to push a fine mist of sealant through your system. The sealant particles travel through the ducts and stick to the edges of leaks, sealing them over time. Here’s how the process works:
- Your duct system is tested to measure how much air is leaking
- Vents and registers are temporarily sealed off
- The Aeroseal system injects sealant into the ducts
- The sealant collects at leak points and closes gaps from the inside
- A final test confirms how much leakage has been reduced
This method can seal leaks that are difficult or impossible to reach with traditional duct sealing. In homes across Fredericksburg, Kerrville, and the Texas Hill Country, duct leaks can lead to uneven temperatures, higher energy bills, and reduced comfort. Aeroseal offers a way to improve system performance without major disruption to your home. It’s often used as part of a larger effort to improve airflow, efficiency, and indoor air quality.
Does 72 Degrees Texas Use Special Equipment Or Techniques For Air Duct Cleaning?
Professional Air Duct Cleaning Methods And Equipment
Air duct cleaning requires more than basic tools. 72 Degrees Texas uses specialized equipment designed to clean your duct system thoroughly without damaging it. Professional cleaning typically involves:
- High-powered vacuum systems to remove dust and debris from ducts
- Rotating brushes or agitation tools to loosen buildup inside duct walls
- Inspection tools to identify problem areas before and after cleaning
- Containment methods to keep debris from spreading into your home
These techniques allow technicians to reach deep into your duct system and remove contaminants that standard cleaning methods can’t address. In the Texas Hill Country, where dust and debris can build up quickly, professional duct cleaning helps maintain airflow and improve overall system performance. 72 Degrees Texas combines the right equipment with experienced technicians to deliver thorough, effective duct cleaning for homeowners in Fredericksburg, Kerrville, and surrounding areas.
*Offers cannot be combined with other promotions or applied to dispatch fees. No cash value. Must present offer at time of service. Call for details.
