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.
Trusted Air Duct Repair for Boulder Homeowners
Ductwork in Boulder takes a beating. Between the dry air, the temperature swings that push a furnace hard from November through March, and housing stock that ranges from tight new builds to older homes with decades-old galvanized runs, ducts develop crushed sections, popped joints, and seams that quietly leak a third of your conditioned air into the attic. That’s the problem we fix. Our technicians have up to 9 years of experience and carry Rotobrush contact-cleaning and Nikro negative-air equipment, so we can find the failure, repair it, and leave the system clean in one visit. We clean and we repair – not clean around a problem. For same-day repair in Boulder, call (877) 550-7147.
HVAC Duct Installation
HVAC Duct Installation is the work of building a complete new duct system for a home, from the trunk line off the air handler to the last supply boot in a bedroom ceiling. You need it when the existing system was sized wrong, when a remodel adds rooms the current layout can’t reach, or when a homeowner is finishing a basement and the duct run stops at the staircase. We design and install the run with the same equipment service contractors use: Rotobrush for verifying cleanliness before close-up, Nikro negative-air filtration to keep drywall dust out of the rest of the house. A full new system in Boulder runs roughly $4,200-$8,500 depending on home size, number of runs, and how much cutting and patching the walls need. Call (877) 550-7147 for an estimate.
Sizing and Load Calculation First
We don’t guess at duct size. Every installation starts with a room-by-room load check so the trunk and branches match the actual air your furnace or heat pump delivers. Oversized runs waste capacity; undersized runs whistle and short-cycle the equipment.
Working Around Finished Construction
Many Boulder homes have finished basements and double-drywall ceilings, which limits where new trunk lines can go. We map the framing before any cutting and route runs through chases and soffits rather than tearing open a finished wall unnecessarily.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Air Duct Replacement
Air Duct Replacement means removing failing ductwork and installing new material in its place, usually because the original runs are made of deteriorated flex, have collapsed from years of attic heat, or are contaminated with debris no cleaning will solve. If a technician’s camera finds torn plastic liner on flex duct or heavy damage at multiple joints, replacing the run is often cheaper than patching it piece by piece. We use Abatement Technologies equipment when the old ducts come out of a home with visible contamination, so removal doesn’t spread spores through the house. Air Duct Replacement in Boulder typically costs $1,800-$5,500 depending on length of runs, attic access, and whether it’s a partial or whole-home replacement. Full details come with a written estimate.
So You Know It’s Actually New
We photograph the old material on removal and the new duct after installation, so you see the condition of the original and the finished work. Nothing about this job should look like the duct wasn’t touched.
What New Material We Use
Replacement runs are specified to match your system’s airflow: rigid galvanized where access allows, sealed flex in tight attic chases, wrapped insulation to spec for our climate. All joints are mastic-sealed, not just taped.
Ductwork Repair
Ductwork Repair is corrective work on a system that’s still mostly usable, fixing the specific failures that are hurting efficiency: disconnected joints, crushed flex, torn insulation, open seams, and boots that no longer sit tight against the register. The signs show up as uneven heating, whistling at registers, dust in rooms right after the furnace kicks on, or a utility bill that climbs well past what the house should need. Our technicians locate the problem with a visual run-through and a pressure check on the run, then fix it. For a Longmont or Boulder homeowner with a handful of failing joints, the estimate is usually clear and the job is often same-day. Small ductwork repairs in Boulder run $180-$450; larger multi-point repairs run $450-$1,200. No per-vent pricing, one price per system agreed before work starts.
The Most Common Failures
Disconnected flex at the collar is the single most frequent issue we find: a run silently blowing attic air into the ceiling cavity. Next are crushed or kinked flex behind knee walls and boots pulled away from the floor after a flooring replacement.
Sealing vs. Patching
Tape-and-go patching fails within a heating season. We use mastic and mechanical fasteners at every repair point so the joint stays put through the temperature swings a Boulder furnace season throws at it.
Duct Replacement
Duct Replacement is the choice for a system where the ductwork itself is at the end of its useful life: brittle flex, oil-canning galvanized, or material that has been wet and dried repeatedly to the point where the liner separates. It differs from a partial replacement in scope – we remove and rebuild the whole distribution system, not just the run that failed. This is the job for a home that has been patched four times or where previous owners used duct tape as a permanent fix. Duct Replacement in Boulder runs roughly $3,500-$7,500 depending on square footage, attic and crawl conditions, and the number of branch runs. We establish the price per system in a written estimate before opening a single seam.
Replacing in Tight Attics
Attic duct in this climate sees summer temperatures that break down flex liner faster than anywhere else in the house. We use insulation rated for the service and seal every collar and joint with mastic instead of tape.
The Old Duct Comes Out First
We don’t reroute around failing duct. We pull it out, bag it, and haul it away, so no contaminated material is left in a plenum or a joist bay where it can reintroduce dust later.
Ductwork Installation
Ductwork Installation covers new runs and extensions to an existing system: adding a supply to a converted garage, running a return to a finished basement, replacing a boot-and-flex set with a properly balanced layout, or building a plenum and trunk for a new furnace. You need it whenever the existing duct can’t deliver enough air to a room you’ve added, or when a remodel changes the room’s shape and the old registers no longer land where they should. We plan the run, verify static pressure against the equipment, and install with sealed joints and correctly sized boots. Ductwork Installation in Boulder costs about $650-$2,400 for a small set of new runs, and up to $4,000 for a whole-house extension. Every job is quoted per system with a written estimate.
Getting Airflow Right
A new run isn’t a length of flex stapled to a joist. It’s a calculated path from the trunk to the register with the right diameter for the room’s load, and a return path large enough to let the air back out.
Working With Whole-Home Filtration
Homes with Honeywell and Aprilaire whole-house filters need new duct runs tied into the filter cabinet and return plenum correctly, not beside it. We’re trained on both systems and build the connection so filtration keeps working after the install.
Brands We Service
We service Honeywell and Aprilaire whole-home air filtration systems and know where those units wear: filter cabinet seals that loosen over a heating season, return plenums that leak around the cabinet edges, and media racks that pull away from the duct wall. On the cleaning and repair side, we work with Rotobrush contact-cleaning machines to scrub duct walls, Nikro negative-air and HEPA units to hold dust in a sealed containment, and Abatement Technologies tools when a home needs contamination-level handling. Guardsman protective treatments are available as part of the full-service scope when a cleaned system should be protected afterward. These are the tools that separate a real duct contractor from a shop running a consumer vacuum and a shop vac hose.
Whether you have Honeywell or Aprilaire equipment, or any other make, we can help. If the problem is with the filtration cabinet or the duct that feeds it, we assess the whole system rather than just the filter. Our technicians have up to 9 years of experience with the equipment that does the work. Click to see why we’re the Boulder duct cleaning company that repairs what it cleans.
See the difference
Before
After
Before
After
Before
AfterSigns You Need a Pro Right Now
- Rooms that never warm up or never cool down. If one bedroom is 8°F off from the rest of the house no matter how you set the thermostat, a disconnected or crushed duct is the leading suspect. That’s lost capacity you’re paying for every month.
- Dust blowing out of registers right after the furnace starts. That burst is usually a joint that has opened and is drawing attic or crawl dust back into the supply side. It isn’t a cleaning problem; it’s a repair problem.
- Whistling or roaring noise from a register. Whistling means the duct is undersized, crushed, or has a separated collar. Roaring means airflow is being forced through too narrow a path.
- Rising energy bills with no other explanation. Leaking joints can send a large share of conditioned air into a ceiling cavity. A pressure check tells you quickly how much you’re losing.
- Visible sagging, tape peeling, or torn flex in the attic. If you can see the duct from the attic hatch and it’s sagging or pulling away, stop running the system and get it assessed. That’s not a job for duct tape.
Our Process, Step by Step
- 1
Phone consult and booking. We ask what the symptoms are, how old the home is, and whether the attic or crawl is accessible. That determines what equipment we bring and roughly how long we’ll be on site. Call (877) 550-7147 to set the visit.
- 2
On-site assessment with a visual and pressure check. We inspect every accessible run, boot, and collar, then measure static pressure at the plenum and at the far registers. That tells us where the system is losing air, not just where it looks bad.
- 3
Written findings and a per-system price. You get the scope in writing: which runs need repair, which need replacement, and what the whole job costs. One flat price per system, agreed before we start. No per-vent pricing, no surprise line items.
- 4
Repair or replacement with sealed joints. We do the work with mastic-sealed joints, mechanically fastened collars, and correctly sized replacements. Rotobrush and Nikro equipment come in when cleaning is part of the scope so dust doesn’t migrate through the house.
- 5
Post-work verification and photos. We run a pressure check again, confirm the registers deliver the airflow they should, and give you before-and-after photos of your own ducts. You see exactly what was repaired and where.
How Much Does Air Duct Repair Cost in Boulder?
Air duct repair in Boulder typically runs $180-$1,200 depending on how many failures need fixing and how accessible the ductwork is. A single disconnected joint or a crushed flex section behind a knee wall usually lands at the low end. A system with five or six problem points, plus a pressure check and cleaning, sits at the high end.
A typical ductwork repair in Boulder runs $180-$450 for one or two failures in an accessible attic or crawl space. A multi-point repair in a larger home with a finished basement or a hard-to-reach ceiling chase runs $450-$1,200. Air duct replacement in Boulder is a different price bracket: $1,800-$5,500 for a partial replacement and $3,500-$7,500 for a full system replacement, because the old material comes out and new duct goes in. HVAC duct installation for a whole home runs $4,200-$8,500.
What affects the price: attic versus crawl versus wall-chase access, number of runs, whether the duct is flex or rigid, and whether cleaning has to be part of the job to remove contamination before repair. A house with a low, hot attic where we can’t stand up costs more in labor than one with a walkable attic.
How to avoid overpaying: ask for a per-system price in writing, not a per-vent or per-hour rate. Avoid any quote where the technician quotes a coupon number on the phone and the invoice tells a different story. A free estimate here is a real visit with a real pressure check, and the written number is the number. If a company can’t tell you what the job will cost before they start, that’s a tell.
What’s included in a free estimate: visual inspection of every accessible run, static pressure check, written findings, before-and-after photos on completion, and a per-system price. No obligation to book the work.
Our Service Area Near Boulder
We serve homeowners and property managers throughout Boulder County and the surrounding north-metro area. From Boulder, our calls regularly reach Westminster, Arvada, Thornton, Lakewood, Longmont, Evergreen, Estes Park, Ken Caryl, and Platteville. Typical dispatch from 7am to 7pm, Sunday through Friday, gets a technician to most of these locations the same day for repair work. If you’re in Boulder proper, we’re on-site quickly; if you’re in the foothills toward Estes Park or Evergreen, we’ll confirm the window when you book. Call (877) 550-7147 to schedule.
Serving Boulder, CO – Our Local Coverage Area
We serve Boulder and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
Frequently Asked Questions About Air Duct Repair in Boulder
Air duct repair is the work of fixing damaged ductwork so it seals and delivers air the way it should. That means reconnecting separated collars, replacing crushed or torn flex runs, sealing open seams with mastic, and reattaching boots that have pulled away from the floor or ceiling. It’s different from cleaning, which removes dust; repair fixes the structure so the system stops losing air.
Most residential air duct repairs in Boulder take between two and five hours on site. A single disconnected joint or small flex replacement is a couple of hours. A multi-point repair with a pressure check and cleaning runs longer, often a half-day. We give you a realistic window when we book the job, not on arrival.
Air duct repair in Boulder typically runs $180-$1,200, with a single small repair at the low end and a multi-point repair at the high end. Duct replacement runs $1,800-$5,500 partial or $3,500-$7,500 full system. Call (877) 550-7147 for an exact quote – estimates are free.
Yes, we service both Honeywell and Aprilaire whole-home air filtration systems. Our technicians are trained on both brands, which matters because the filter cabinet and return plenum are part of the duct system and often where the failure is. We also work with Guardsman protective treatments, Rotobrush contact-cleaning, and Nikro negative-air equipment. Whether you have Honeywell, Aprilaire, or any other make, we can help.
Yes, same-day repair is often possible when you call before the dispatch window. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. A call outside dispatch hours is booked into the next opening. We’re closed on Saturdays.
Every repair is covered by our satisfaction guarantee: if the work doesn’t hold, we come back and make it right. We confirm the specific guarantee language in writing before the job, so you know exactly what’s covered. Before-and-after photos of your own ducts are provided when the work is done.
Clear access to the attic hatch, crawl space entry, and the furnace closet. Move anything stored on top of registers or in front of return grilles. If you know the last time the ducts were cleaned or the system installed, have that ready. Everything else – the pressure check, the camera work, the repair – we handle.
Schedule Your Air Duct Repair Service in Boulder Today
If a room never warms up, dust is blowing out of the registers, or your energy bill doesn’t match the house, you don’t have to guess. Call (877) 550-7147 to book a free estimate for air duct repair in Boulder. One flat price per system, in writing, before any work starts. Before-and-after photos when it’s done. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Written by the team at Boulder Duct Cleaning.