Fast, Reliable Duct Repair & Sealing Across Hollis
Duct repair and sealing in Hollis, NH typically runs $250-$650 for most residential jobs, with same-day or next-day scheduling available throughout the 03049 zip code. We travel to Hollis regularly from our route along Route 122 and Silver Lake Road, and we know the long driveways and detached outbuildings that define this town.
We’ve been working in Hollis since the 1980s, back when the bedroom-community build-out was still filling in the 3-acre lots north of Nashua. Our Duct Repair & Sealing team carries mastic sealant, flex-duct reinforcement wire, and metal repair sleeves sized for the heavy-duty systems we find here. Most Hollis calls are handled in one visit. If you’re seeing weak airflow to a workshop, smelling dust from your registers, or hearing whistling from basement seams, call (844) 685-6342. We’ll answer live, give you an upfront price, and show up when we say.
Why Bellows Air Duct & Vent Co. Is Hollis’s Preferred Duct Repair & Sealing Company
Hollis homeowners don’t call us for flash. They call because their neighbor did, or because they got tired of a Nashua-area coupon company that showed up late and invented charges. We’ve earned that call over 42 years by doing what we said we’d do, then standing behind it.
Our reputation here is built on jobs people actually remember. The raised-ranch on Proctor Hill Road where we sealed a collapsed return chase and the homeowner finally stopped getting sinus headaches every October. The colonial off Depot Road where we found a flex duct chewed through by field mice and replaced it with rodent-resistant mastic-wrapped hard pipe. These aren’t testimonials we asked for - they’re the kind of word-of-mouth that spreads at the Hollis Farmers Market or the transfer station.
Response time matters in a town with no municipal water and no natural gas lines to half the homes. When your workshop heater can’t keep up because a 30-foot flex run has sagged shut, you don’t want a dispatcher in Boston guessing at your address. We know Broad Hill Road from Wheeler Road, and we know which Hollis driveways still aren’t plowed by 9 a.m. after a southern New Hampshire snow. Most repair calls in Hollis are scheduled within 24 hours, emergencies same day.
Ray Castillo has run Bellows since 1984, and he still answers the phone himself some mornings. The company’s named for the oldest air-moving tool there is - a bellows - because that’s the kind of business this is: no apps, no chatbots, just technicians who show up in uniform with a camera, show you what’s wrong, and fix it.
Our Duct Repair & Sealing Services in Hollis
Duct Sealing
Forced-air systems in Hollis’s 1970s-through-2000s homes lose 20-30% of their heated air through seams and joints, especially where metal trunk lines pass through unconditioned basements. Our sealing process starts with a camera inspection of every accessible joint, then we apply mastic sealant - not duct tape, which dries and fails within two years - to permanently close gaps. In Hollis, we pay special attention to return-air chases near basement bulkheads, where temperature swings between the heated house and the cold basement create expansion cracks that standard cleanings miss.
Flex Duct Repair
This is where Hollis’s large-lot zoning creates problems generic duct companies don’t see. Many homes here have detached garages, workshops, or pool houses fed by flex-duct runs of 30 feet or more. Unsupported flex sags over time, collapses at joist transitions, and chokes airflow to a trickle. We sealed a 40-foot flex-duct run to a detached three-bay garage on Broad Hill Road last fall. The duct had collapsed at a joist transition, causing airflow to drop by 60% - we pulled it back, mastic-sealed the joint, and reinforced the flex with spiral wire so the homeowner’s woodstove fan could actually dry the space. Typical flex repair in Hollis runs $280-$450 depending on run length and access.
Metal Duct Repair
Sheet-metal trunk lines in Hollis’s older colonials and raised-ranches corrode at seams where basement humidity condenses against cold duct walls. We patch small breaches with galvanized sleeves and seal them with water-resistant mastic. For larger failures - often where a previous owner drilled through a trunk line for a plumbing or electrical pass - we fabricate custom transitions on-site. Metal repair in Hollis homes typically costs $320-$580.
Duct Insulation
Basement-routed supply lines in Hollis lose heat before they reach second-floor bedrooms, especially in homes built during the energy-cheap 1980s. We wrap accessible metal duct with formaldehyde-free fiberglass insulation, sealed with vapor-barrier jacketing, to cut that loss. Insulation jobs in Hollis run $400-$750 for partial-system work, full-system pricing provided after inspection. Every job gets camera-verified before and after photos, and our 90-Day Done Right Promise in writing.
What happens when you call
- 1
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.
Trusted Brands We Service in Hollis
We stock parts from Rotobrush, Nikro, and Abatement Technologies - the same brands serious HVAC contractors specify for residential duct systems. For Hollis customers, that means no waiting a week for a specialty fitting to ship from a warehouse in Ohio. We carry spiral-wire flex reinforcement, mastic sealant rated to 200°F, and rodent-resistant duct sleeves sized for the long runs common to this town’s outbuildings. If your system uses Aprilaire or Honeywell humidifier components tied into your ductwork, we inspect and service those connections too, since Hollis’s well-water mineral load makes humidifier pans a common failure point.
Common Duct Repair & Sealing Problems We See in Hollis Homes
- Flex duct sags or collapses in long, unsupported runs to detached outbuildings, choking airflow to workshop heat registers. Hollis’s 3-acre minimum zoning means many properties have these extended runs, and standard 25-foot flex maxes out well before the outbuilding. We reinforce with spiral wire and proper slope.
- Oversized garage doors break the return-air balance when opened, pulling unfiltered attic air into the duct system through unsealed seams. In homes with attached three-car garages - common in Hollis’s 1990s buildouts - that pressure differential can reverse airflow through basement returns. We seal the envelope and rebalance dampers.
- Mice chew through mastic patches on basement return chases in homes on wooded lots, re-exposing the system to dander and debris. Hollis’s densely wooded character means every fall, field mice move indoors through gaps as small as a dime. We use EPA-registered sanitizer on contaminated duct, then seal with rodent-resistant materials.
- Whole-house humidifiers attached to forced-air furnaces deposit mineral scale inside supply plenums, a pattern far more prevalent in Hollis than neighboring towns because virtually every home here draws from a private well with elevated iron and minerals. Every duct job we do in Hollis includes humidifier pan and duct inspection for this reason.
Pricing for Duct Repair & Sealing in Hollis, NH
We’re straightforward about numbers because we’ve seen what the alternative looks like.
| Service | Typical Range in Hollis |
|---|---|
| Basic duct sealing (partial system, accessible basement) | $250-$400 |
| Flex duct repair/replacement (standard residential run) | $280-$450 |
| Flex duct repair (long run to outbuilding, 30+ ft) | $380-$580 |
| Metal duct patch or sleeve repair | $320-$580 |
| Duct insulation (partial system wrap) | $400-$750 |
| Full system sealing + sanitizing after rodent contamination | $650-$950 |
What moves you within these ranges: access difficulty (crawlspace vs. full basement), run length to outbuildings, whether we need to remove and replace degraded insulation, and if EPA-registered sanitizer is required after rodent or mold contamination. We inspect with a camera before quoting, so you see what we see. The price we give over the phone after that inspection is the price on the invoice. No bait, no change at the door.
Standing offers for Hollis homeowners: $50 off any repair over $250, free second opinion on any written estimate from another company, and a permanent 5% senior and veteran discount. Call (844) 685-6342 for an exact quote - estimates are free.
We Also Serve Cities Near Hollis
Our Hollis route covers Nashua to the south, Milford to the west, Hudson to the east, and Merrimack to the northeast. If you’re in one of these towns and your workshop duct is sagging or your basement returns are whistling, the same technicians who know Hollis’s well-water mineral patterns know your area too. Same upfront pricing, same 90-Day Done Right Promise.
Serving Hollis, NH - Our Local Coverage Area
We’re based in the Hollis 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 - Duct Repair & Sealing in Hollis
Long flex-duct runs to outbuildings sag and collapse at joist transitions, cutting airflow by half or more. In Hollis, where 3-acre zoning produces these extended runs regularly, we reinforce the flex with spiral wire and mastic-seal every joint to restore full flow. Call (844) 685-6342 for an exact quote - estimates are free.
Yes. Opening a large garage door creates negative pressure that pulls unfiltered attic or garage air into your return ducts through unsealed seams, especially in Hollis’s 1990s-era homes with attached three-car garages. We seal the duct envelope and rebalance dampers to stop the reversal. Call (844) 685-6342 for an exact quote - estimates are free.
Signs include sudden dust or odor from registers, scratching sounds in basement returns in fall and winter, and debris visible when you remove floor grilles. In Hollis’s wooded lots, this is common from October through April; we inspect with a camera and apply EPA-registered sanitizer if contamination is found. Call (844) 685-6342 for an exact quote - estimates are free.
We pull the sagging section back to proper slope, mastic-seal the joint where it collapsed, and install spiral-wire reinforcement to prevent recurrence. For Hollis’s long outbuilding runs, we may add support straps at code-required intervals. Typical cost is $380-$580 depending on length and access. Call (844) 685-6342 for an exact quote - estimates are free.
Often yes. We use flexible patch sleeves and mastic that can be worked through limited access openings, then verify the seal with a camera. If the damage is extensive or the crawlspace is too tight for safe work, we’ll tell you upfront before cutting anything. Call (844) 685-6342 for an exact quote - estimates are free.
If your Hollis home has weak airflow, rising energy bills, or that particular dusty smell every time the heat kicks on, we’re the call to make. No coupons to clip, no apps to download. Just a live person on the phone, an honest price before we start, and a crew that shows up when we say. That’s how we’ve worked for 42 years. That’s how we’ll handle your job.
Call Bellows Air Duct & Vent Co. at (844) 685-6342 for a free estimate on duct repair and sealing in Hollis. We’ll answer live, day or night.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Hollis since 1984.