Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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After
Before
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Before
AfterFast, Reliable Duct Sealing Across Richland Hills
We seal ducts in Richland Hills homes built when Eisenhower was president and the Cowboys were new. Most of the houses we work on here are 1950s through 1970s ranch homes with original galvanized steel or early flex ductwork that’s been baking in vented attics for half a century. Our Duct Sealing in Richland Hills crews are dispatched from our Dallas-Fort Worth office and carry mastic, metal tape, and replacement flex runs sized for these older systems. If your back bedroom never cools off or your utility bill climbs every June, leaking ducts are the likely culprit. Call us at (361) 326-5060 and we’ll send a technician who knows what to look for in a mid-cities ranch.
Why Hollis Air Duct Cleaning Is Richland Hills’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our reputation in Richland Hills is built on showing up when we said we would and pricing the job in writing before we touch anything. We also offer Richland Hills Dryer Vent Cleaning as part of our home services. Homeowners here tell us the same story: they called another outfit that quoted a low price over the phone, then the invoice jumped once the technician was in the attic. That doesn’t happen with Hollis. The price we write down is the price you pay.
Our technicians are background-checked and uniformed, and they work to The Garrison Standard: arrive inside the quoted window, price in writing, complete the job by the book, and leave the site clean. Every repair we make in Richland Hills is covered by our 365-Day Done Right Promise. If the seal fails or the repair doesn’t hold, we come back and make it right at no charge, including a free second visit. That’s not a slogan; it’s written on every job.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule.
Duct Sealing Services in Richland Hills
Duct Sealing Services in Richland Hills are almost always retrofit work on aging systems, not new construction. We apply mastic sealant and professional-grade metal tape to accessible joints, plenum connections, and transition points in your attic or crawl space. A typical duct sealing job in Richland Hills runs $450 – $950 for a single-system ranch home, depending on how many joints are accessible and whether we need to replace degraded flex runs. Most jobs take a half day.
Attic Joint and Plenum Sealing
The biggest single loss point in a 1960s Richland Hills ranch is usually the return plenum at the air handler. We seal these connections with mastic rated for North Texas attic temperatures, not the hardware-store tape that peels off in a season. Our crews use inspection cameras to verify the seal before we close the hatch.
Flex Run Replacement and Sealing
Early flex duct in Richland Hills homes often collapses internally or gets chewed by rodents in vented attics. We replace failed runs with new flex duct and seal the connections properly, then test airflow to the registers before we leave. You’ll feel the difference in rooms that haven’t cooled evenly in years.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Duct Insulation in Richland Hills
Duct Insulation in Richland Hills is frequently the more urgent need because the original external wrap on 1960s galvanized ducts has turned to dust. We remove the crumbling fiberglass, seal the joints beneath it, then re-wrap with new insulation rated for attic installation. A typical duct insulation job in Richland Hills runs $650 – $1,400 for a full system, depending on linear footage and attic accessibility.
External Wrap Replacement
The old wrap on Richland Hills ducts often contains asbestos in pre-1980 homes, so we test before we disturb it. When it’s clean, we strip the failed insulation, seal every joint we expose, and install new wrap with proper vapor barriers. This stops the condensation that leads to mold in humid attics.
Condensation and Mold Prevention
North Texas humidity hits hard from May through September. Uninsulated or poorly insulated ducts in a 140-degree Richland Hills attic sweat, and that moisture feeds mold inside the system. Proper insulation with intact vapor barriers breaks that cycle.
Trusted Brands We Service in Richland Hills
We carry professional-grade equipment and materials from Rotobrush, Nikro, and Abatement Technologies on every truck, and we stock filtration and insulation products from Honeywell, Aprilaire, and Guardsman. For Richland Hills homeowners with aging systems, this means we don’t have to order parts and come back. Our Duct Sealing technicians arrive with mastic, metal tape, replacement flex runs, and insulation sized for the 6-inch and 8-inch galvanized common to 1960s ranch construction. If your system needs something specific, we source it fast from our Dallas-Fort Worth warehouse rather than sending you to a supply house.
Common Duct Sealing Problems We See in Richland Hills Homes
- Crumbling 1960s external duct wrap that defeats new sealant. We open the attic on a home near Baker Boulevard and find the fiberglass wrap disintegrating. Mastic applied over that surface flakes off within a season. We strip the old wrap, seal the bare metal, and re-insulate properly.
- Return-side leaks at the air handler plenum that get ignored. Many crews seal only the supply ducts they can see and skip the return plenum, which is often the largest leak in the system. We pressure-test both sides and seal where the actual losses are.
- Rodent-chewed flex runs in vented attics near the city center. Richland Hills’s mature trees and established neighborhoods mean squirrels and rats in attics. We find flex duct chewed through behind the insulation. Sealing over that hole is pointless; we replace the damaged section and seal it right.
- Partially collapsed returns causing blower strain. The flexible return duct in a 1970s ranch sags and collapses over decades. The blower works harder, the motor fails sooner, and the house doesn’t cool. We rebuild the return with rigid duct where possible and seal all transitions.
Pricing for Duct Sealing in Richland Hills, TX
A typical duct sealing job in Richland Hills runs $450 – $950 for a single-system home with accessible attic ductwork. Full duct insulation replacement on a ranch with degraded external wrap runs $650 – $1,400. What moves the price: how many linear feet of duct we can access, whether we need to replace collapsed flex runs, and if the old wrap requires asbestos abatement before we begin. We don’t quote per-vent or per-register. We price the whole system, write it down, and that’s what you pay. No add-ons at the door. Call (361) 326-5060 for a free estimate. We’ll inspect your attic, show you what we found, and give you a written price before any work starts.
We Also Serve Cities Near Richland Hills
Our crews work throughout the Dallas-Fort Worth metroplex, including Richland Hills, Houston, San Antonio, Dallas, and Fort Worth. Scheduling and dispatch are coordinated from our Dallas-Fort Worth office, with local technicians serving each area.
Serving Richland Hills, TX - Our Local Coverage Area
We’re based in the Richland Hills area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Duct Sealing in Richland Hills
They can often be sealed if the metal itself is intact. We strip the crumbling wrap, inspect the galvanized joints for corrosion or separation, seal what we can reach with mastic, and replace any failed flex runs. If the metal is rusted through or the plenum is cracked, we’ll tell you and price replacement separately. Call (361) 326-5060 and we’ll show you exactly what you’re working with.
We’re bonding sealant to 50- to 65-year-old metal that’s dirty, oxidized, and sometimes lightly rusted, not clean new pipe. The attic has baked that ductwork through thousands of North Texas summers. That means more prep, more mastic, and often insulation replacement alongside the sealing. New construction in fast-growing suburbs to the north is a completely different job.
Sealing stops conditioned air from escaping and humid attic air from entering, which reduces the moisture that feeds mold. But if mold is already established in the ductwork or insulation, sealing alone won’t remove it. We inspect with a camera and recommend cleaning or insulation replacement if we find active growth. Call (361) 326-5060 for an inspection.
Signs we see constantly in Richland Hills: rooms that won’t hold temperature, utility bills that spike in June through September, dust blowing from registers even with a new filter, or a blower that runs constantly. We can run a basic pressure test and visual inspection to show you where the leaks are. Estimates are free.
It helps if your leaks are pulling dusty, pollen-laden attic air into the return side. Sealing those paths stops that infiltration. But if your allergy triggers are already inside the ductwork, you’ll need cleaning too. We can test and tell you which problem you actually have. Call (361) 326-5060 for an exact quote.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Richland Hills since 2004.