Fast, Reliable HVAC Cleaning Across Hollis
HVAC cleaning in Hollis, NH typically runs $280-$580 for a full system service and is usually completed in a single visit by our HVAC Cleaning team. Most Hollis homes built between the 1970s and early 2000s carry forced-air systems that have been cycling debris through unconditioned basements for decades, and we’re familiar with what that looks like. We answer calls live, 24 hours a day, and we dispatch from our route through southern New Hampshire to reach properties from Silver Lake Road to the Milford line without delay. If you’re in Hollis and your system smells musty, runs loud, or pushes weak airflow, call (844) 685-6342. We’ll give you an upfront price before we start, and we stand behind the work with our 90-Day Done Right Promise in writing.
Why Bellows Air Duct & Vent Co. Is Hollis’s Preferred HVAC Cleaning Company
We’ve been serving southern New Hampshire homeowners for over 42 years, and Hollis has been on our route since the bedroom-community building boom of the 1980s. Our technicians know the raised-ranch layouts off Route 122, the colonials tucked behind stone walls on 3-acre lots, and the specific problems that come with well-water humidifiers and basement duct runs in this town.
Ray Castillo built this company on the idea that a homeowner should never have to call twice for the same job. That principle shows in our reviews from Hollis customers, who consistently mention our technicians arriving on time, explaining the camera inspection findings before any work begins, and leaving systems visibly cleaner. Our 90-Day Done Right Promise means if something isn’t right, we return at no charge with no paperwork required. Calls are answered by a live person, not a voicemail system, and our background-checked, uniformed technicians carry professional-grade Rotobrush and Abatement Technologies equipment on every truck.
We don’t bait with coupons and change the price at the door. The number we quote is the number on the invoice.
Our HVAC Cleaning Services in Hollis
Evaporator Coil Cleaning
The evaporator coil in your Hollis home’s air handler sits in a dark, humid environment six months of the year while your heating system runs. Southern New Hampshire’s long heating season, from October through April, means that coil accumulates dust, pollen, and microbial growth faster than in milder climates. We access the coil, apply foaming cleaner, and rinse thoroughly so it transfers heat efficiently again. A clean coil can drop your energy bills and eliminate the musty smell that blows from vents in homes near the dense tree cover of Hollis‘s rural lots.

Blower Cleaning
The blower motor and wheel push every cubic foot of air through your Hollis home’s ductwork. When the wheel fins clog with debris, airflow drops, the motor strains, and you hear that low rumble from the basement. We remove the blower assembly, clean the wheel and housing, and re-balance the system. In Hollis’s older raised-ranch homes, where the air handler often sits in a damp basement corner, blower cleaning is one of the most impactful single services we perform.

Condenser Cleaning
Your outdoor condenser unit draws air through its coils, and Hollis’s heavily wooded properties deliver exceptional pollen loads in spring and leaf particulates in fall directly to that intake. We wash the coils, straighten damaged fins, and clear the cabinet base so the unit can reject heat properly. This matters especially before the cooling season, when a dirty condenser will run longer, cost more, and fail sooner.

Air Handler Cleaning
The air handler is the central station of your forced-air system, and in Hollis homes with basement-mounted units, it’s often the dirtiest component we find. We clean the cabinet, drain pan, and associated components, then run our camera through the attached plenum to verify nothing was missed. For homes with whole-house humidifiers, and that’s most of Hollis, this is where we also inspect for the mineral scale and microbial growth that well-water systems produce.

Heat Exchanger Cleaning
The heat exchanger is the barrier between combustion gases and your breathing air, and any breach is a serious safety concern. We inspect and clean exchanger surfaces during our HVAC cleaning service, looking for corrosion, cracks, or soot buildup that could indicate incomplete combustion. In Hollis’s 1990s-era homes with original furnaces, this inspection has caught deteriorating exchangers before they became hazardous. We do not perform DIY-level checks; this requires trained technicians with proper detection equipment.

Coil Treatment
After mechanical cleaning, we apply EPA-registered coil treatment products to inhibit microbial regrowth on evaporator and condenser coils. In Hollis’s well-water homes, where humidifier pans and coils already face elevated bioburden from mineral-rich moisture, this treatment extends the cleanliness of the service. We use Abatement Technologies products applied according to manufacturer specifications, not over-the-counter sprays.

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.
Trusted Brands We Service in Hollis
We carry professional-grade equipment and replacement parts from Rotobrush, Abatement Technologies, and Aprilaire on every truck, and we stock common humidifier pads and filters for Hollis customers so most jobs finish in one visit. Aprilaire whole-house humidifiers are especially common in this market, and we keep the 35-, 45-, and 600-series pads in stock because we know what Hollis well water does to them. When a component needs ordering, our supply chain reaches Nashua and beyond with next-day turnaround, but same-day completion is our standard.
Common HVAC Cleaning Problems We See in Hollis Homes
- Mineral scale and microbial growth in humidifier-attached plenums. Nearly every Hollis home draws from a private well, and southern New Hampshire groundwater carries elevated minerals and iron. Whole-house bypass humidifiers deposit that scale inside supply plenums and trunk lines, creating a contamination pattern far more prevalent here than in municipal-water-served towns like Nashua. Every duct-cleaning job in Hollis should include a humidifier pan and duct inspection for this reason.
- Rodent contamination in basement return chases. As temperatures drop each October, field mice move indoors across Hollis’s rural lots and frequently enter duct systems through basement return grilles or gaps around floor registers, leaving nesting material, dander, and droppings in main trunk lines. Local technicians know to probe lower-level return chases before quoting a standard clean, because rodent contamination here often requires EPA-registered sanitizer application on top of mechanical cleaning.
- Condensation moisture in unconditioned basement duct runs. Hollis’s housing stock of custom-built colonials and raised-ranches typically routes flex and sheet-metal duct through unconditioned basements. That basement routing exposes duct runs to condensation moisture and rodent pressure, common findings on service calls throughout town, and leads to recurrent debris accumulation if not properly addressed.
- Accelerated debris loading from wooded lot particulates. Hollis’s densely wooded, large-lot character delivers exceptionally high spring pollen loads and heavy fall leaf particulates directly to outdoor return-air intakes, speeding interior duct fouling compared to more open suburban layouts. Systems here often need more frequent attention than identical equipment in cleared developments.
Pricing for HVAC Cleaning in Hollis, NH
A typical evaporator coil cleaning in Hollis runs $180-$280. Blower cleaning runs $150-$240. Condenser cleaning is $120-$200. Air handler cleaning runs $200-$340. Full system HVAC cleaning, combining multiple components, typically falls between $280-$580 depending on accessibility and contamination level. Heat exchanger cleaning adds $140-$220 when performed as part of a larger service. Coil treatment is $80-$140 as an add-on.
What moves the price: basement accessibility in older Hollis homes, rodent contamination requiring sanitizer application, and mineral scale buildup from well-water humidifiers that demands extra mechanical time. We disclose the full price before we lift a single tool, and we honor our standing offers: $50 off any repair over $250, free second opinion on any written estimate, $89 seasonal tune-up, and a permanent 5% senior and veteran discount.
Estimates are free. Call (844) 685-6342 for an exact quote on your Hollis home.
We Also Serve Cities Near Hollis
Our route through southern New Hampshire includes HVAC Cleaning in Hollis and the surrounding communities of Nashua, Milford, Hudson, and Merrimack. Whether you’re on a rural acreage off Route 122 or in a neighborhood near the Nashua border, we bring the same equipment, the same camera verification, and the same upfront pricing to every job.
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 - HVAC Cleaning in Hollis
Hollis’s combination of private well water, whole-house humidifiers, and densely wooded large lots creates a unique contamination load that municipal-water towns don’t face. The mineral scale from well water deposits inside humidifier pans and supply plenums, while rural pollen and fall particulates overload outdoor intakes. We serviced a 1990s colonial on Pine Hill Road where the homeowner complained of musty air; the humidifier pad had crusted with iron scale, and the supply plenum hosted visible microbial growth. We cleaned the ductwork with our Rotobrush system, replaced the Aprilaire pad, and applied Abatement Technologies sanitizer, restoring airflow and air quality. Call (844) 685-6342 if you’re seeing similar symptoms.
Yes, and in Hollis it’s essential. The elevated minerals and iron in southern New Hampshire groundwater crust humidifier pads and create microbial growth conditions in attached plenums that standard duct cleaning misses. Skipping the humidifier pan inspection leaves the root contamination intact. We include this check on every Hollis job. Call (844) 685-6342 for a free estimate.
Yes, especially in fall. Field mice move from Hollis’s rural lots into basement return chases and trunk lines as temperatures drop, leaving nests, dander, and droppings. We probe lower-level returns on every Hollis service call and apply EPA-registered sanitizer when mechanical cleaning alone isn’t sufficient. Call (844) 685-6342 if you’ve noticed scratching sounds or unusual odors from your vents.
Basement ductwork in Hollis homes deserves specific attention because unconditioned basement routing exposes flex and sheet-metal runs to condensation moisture and rodent pressure. These conditions accelerate debris accumulation and can degrade duct integrity over time. Our camera inspection identifies moisture damage and gaps before they become costly repairs. Call (844) 685-6342 to schedule a look.
Most Hollis homes benefit from full HVAC cleaning every three to five years, though homes with well-water humidifiers, heavy tree cover, or known rodent history may need service every two to three years. Southern New Hampshire’s six-month heating season means systems here accumulate debris faster than in milder climates. We recommend a $89 seasonal tune-up annually to catch issues early. Call (844) 685-6342 to set up a schedule that fits your home.
Ready to get your Hollis home’s HVAC system cleaned right? Call Bellows Air Duct & Vent Co. at (844) 685-6342 for a free estimate. We’ll give you an honest price before we start, show you camera verification of the results, and back the work with our 90-Day Done Right Promise in writing. No bait coupons, no surprises on the bill, and a live person answers the phone 24 hours a day.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Hollis and southern New Hampshire since 1984.