Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Honeywell Duct Sealing & Repair: The Alpharetta Owner’s Guide
If you have a Honeywell duct sealing product that’s failed, we stock the parts to fix it and the team to install them right. Installed repair or resealing on a Honeywell system in Alpharetta typically runs between $325 and $680, depending on how much of the existing seal has failed and how many duct connections need to be redone. Most owners discover the problem the same way: a room that won’t hold temperature, a sudden spike in the power bill, or dust showing up around a register that used to be tight.
We’re an independent service provider, not affiliated with Honeywell. What that means for you is we stock Honeywell-compatible sealing materials because they hold up in our Georgia humidity, and we install them under the same written warranty we put on everything else we touch.
Key takeaways:
- Typical Honeywell duct sealing repair in Alpharetta: $325 – $680 installed, written price before work starts
- We stock Honeywell-compatible mastic, tape, and collar replacements on the truck
- Repairs covered by our 365-Day Done Right Promise in writing
- We’re independent, not Honeywell corporate, and we’ll tell you if the part’s worth repairing or replacing
Which Honeywell Models This Applies To
Honeywell has made duct sealing products under a few different lines over the years, and the compatibility question trips up a lot of homeowners. The materials we work with most in Alpharetta include Honeywell’s foil-backed butyl sealing tape, their water-based duct mastic line, and the sealing collars used on Honeywell ERV and whole-home dehumidifier duct connections. If your system has a Honeywell TrueFRESH or Honeywell whole-home humidifier tied into the ductwork, the sealing points at the unit collar are the usual failure spots.
Here’s the compatibility gotcha most people miss: the duct sealing product doesn’t fail because of the Honeywell name on it. It fails because of heat cycling and the moisture swings we get in Alpharetta. North Fulton summers push attic temperatures past 140 degrees. That bakes the adhesive on older foil tape until it lets go. OEM Honeywell sealing products are good, but we’ve also seen quality aftermarket equivalents from Guardsman and Abatement Technologies hold a seal just as well, sometimes at a better price. We’ll match the right material to your system, whether it means OEM Honeywell or an equivalent that actually fits the application.
Identifying what you have is straightforward. Look for a product label on the sealing tape or mastic bucket, or check the model number on the Honeywell unit itself if it’s tied to an ERV or humidifier. Roy Castellanos has pulled apart enough Honeywell duct connections in the older two-story homes near Windward Parkway to know the failure pattern by sight: tape peeled at the seam, mastic cracked where the duct flexes, and a dust trail that shows exactly where the air’s been escaping.
Styles & brands we work with




Signs Your Honeywell Duct Sealing & Repair Is Failing
Here’s what we see when a Honeywell duct seal starts letting go in an Alpharetta home:
- One room won’t hold its temperature. When a seal fails, conditioned air leaks into the attic or crawlspace instead of reaching the register. The room at the end of the longest duct run usually shows it first.
- Dust buildup around a specific register. A failing seal lets the duct pull attic air in on the return side. That dust ends up blowing into the room through the supply side, and you’ll see it at the register first.
- Your power bill jumped without a good reason. The system runs longer to hit the thermostat setting because treated air is leaking out. A 15 to 20 percent jump in cooling cost during an Alpharetta summer is a common symptom.
- You can hear air moving where it shouldn’t be. A failed seal makes a whisper or a whistle at the connection point. If you can hear air in the attic or crawlspace when the system runs, that’s leakage, not airflow.
- The filter fouls faster than it used to. Leaks around the return side suck unfiltered air past the filter housing. When we see a filter plugged after three weeks, we check the seals before we talk about filter changes.
Clean ducts don’t announce themselves, you just breathe better and the filter stays cleaner longer. When the filter starts loading up in half the usual time, the seal is usually the cause, not the filter.
Replacement Cost & What’s Included
Here’s what you should expect to pay in Alpharetta for Honeywell duct sealing repair:
- Single connection reseal (one collar or seam): $125 – $210
- Multiple connection reseal (3 – 5 seams or collars): $280 – $460
- Full return-side sealing job (Honeywell mastic application): $420 – $680
- Honeywell ERV or humidifier collar reseal: $180 – $320
What drives the range is access. A sealed crawlspace connection in a Milton home takes longer to reach than a trunk line in a Roswell basement. Every price we give includes the sealing material, labor, and a written warranty. The price you get before work starts is the price on the invoice when we’re done. No per-vent pricing games, no surprise line items. And every repair is covered by the 365-Day Done Right Promise, which means if the seal fails within a year, we return and redo it at no charge.
See the difference
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After
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After
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AfterDIY or Call Us?
The honest answer depends on what you’re looking at. If you can see a visible gap at a duct collar and you want to clean the area and check the joint before you call, that’s reasonable. What you should not do is climb into a hot Alpharetta attic in July and start peeling old tape off insulation-backed ductwork. That’s how homeowners end up with a bigger tear than they started with, plus a heat exhaustion story to tell.
Here’s where DIY goes wrong on this specific repair: proper sealing means cleaning the joint back to bare metal or clean duct board, applying mastic or the right tape under tension, and letting it cure before the system cycles. If you seal over dust or old adhesive, the new seal fails in a month and you’ve spent a Saturday to end up where you started. Most of the Honeywell reseals we do in the Alpharetta area take a technician under two hours. Call (762) 769-7145 and we’ll give you a written price before anyone touches a ladder.
FAQs
A properly installed Honeywell-compatible seal on clean ductwork typically lasts 10 to 15 years, and in our experience the North Fulton heat and humidity cut into the low end of that range. Call (762) 769-7145 for an inspection if your seal is older than a decade.
Most failed seals in Alpharetta homes can be repaired rather than fully replaced; we cut back the failed material, clean the joint, and lay a new seal. Call (762) 769-7145 and we’ll tell you honestly which one your system needs.
A typical single or multiple connection reseal takes 1 to 2 hours from van arrival to cleanup, depending on access and how much old material has to come off.
Yes, our trucks carry Honeywell-compatible sealing tape, mastic, and collars, plus equivalent materials from Guardsman and Abatement Technologies, so we can handle most repairs in one visit to stock apartments and houses across Alpharetta.
Call Hollis Air Duct Alpharetta
If you’ve got a Honeywell duct seal failing in an Alpharetta home, call (762) 769-7145 for a free estimate. We’ll give you a written price before any work starts, show up when we said we would, and back the repair in writing for a full year. That’s The Garrison Standard, and it’s how we’ve worked since 2004.
Written by Roy Castellanos, Owner, Hollis Air Duct Alpharetta at Hollis Air Duct Alpharetta, serving Alpharetta and nearby areas.