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 Thornton Homeowners
Leaky, crushed, or disconnected ducts are why a furnace runs hard and a bedroom still feels cold. In Thornton, where summer hail and hard winter temperature swings work on attic and crawlspace flex duct year after year, damaged runs are common. We repair ductwork, and we do it with the same professional equipment we bring to a cleaning: Rotobrush rotary-brush systems, Nikro HEPA-rated vacuums, and Abatement Technologies containment gear. Our technicians have up to 12 years of experience, and we’re licensed and insured. If you want a real answer today, call (888) 495-2236. We answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday.
HVAC Duct Installation
HVAC Duct Installation means building out the duct system that carries conditioned air from your furnace or air handler to each room, and it’s the right call when a home has no usable ductwork, an addition was never tied in, or a previous layout was so wrong that patchwork won’t fix it. We size runs to the equipment and the room load rather than to whatever flex was on the shelf, and we seal every joint so the air you pay to cool or heat arrives where it’s supposed to. As part of our duct cleaning Thornton and repair work, we handle installation alongside the rest of the air pathway. Typical HVAC duct installation in Thornton runs $1,200-$4,500 depending on the number of runs, accessibility, and whether it’s a new build-out or a retrofit. The written estimate sets the final price, and the estimate itself is free.
Sizing and Layout
A duct system that’s undersized for the blower will whistle, run hot, and wear the motor. We measure static pressure and match trunk and branch sizing to the equipment’s rated airflow. Getting this right at installation saves you from chasing comfort complaints for years.
Sealing and Insulation
In our climate, an unsealed attic run loses much of its heat before it reaches the register. We seal joints and penetrations and insulate runs that travel through unconditioned space. That’s how a new install holds up through a Thornton winter.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Air Duct Replacement
Air Duct Replacement is the full swap of damaged or obsolete ductwork for new material, and it makes sense when the existing system is collapsed, contaminated beyond cleaning, or built from a product that’s failed throughout. We’ve seen plenty of older flex in Thornton that’s torn at the collar, sagging between hangers, or lined with debris that no brush will reach. We replace the affected sections or the whole system, run Nikro HEPA capture while we open the system up, and reconnect to your air handler cleanly. Air duct replacement in Thornton typically runs $1,500-$5,500 depending on the length of the system and how easy the runs are to reach. The written estimate sets the final price, and it costs nothing to get one.
When Replacement Beats Repair
If the damage is isolated, we repair it. If most of the system is failing at once, replacing it is usually the lower long-term cost. We tell you which situation you’re in and why before any work starts.
Reconnecting to the Air Handler
A replacement is only as good as its connection point. We transition new duct to the plenum and cabinet with properly sealed fittings so nothing is sucking attic air. That single detail decides whether your new duct performs.
Ductwork Repair
Ductwork Repair covers the targeted fixes: resealing separated joints, reconnecting a run that’s popped loose, patching a torn flex section, or re-supporting duct that’s sagging and pinched. It’s the service to ask for when you notice a room that won’t heat, dust that keeps returning, or a whistling register. Alongside our Thornton air duct cleaning service, we repair what we find during a cleaning, so a damaged run doesn’t wait for a second contractor and a second appointment. Ductwork repair in Thornton typically runs $250-$1,100 depending on the number of repairs and where they sit. The written estimate, which is free, sets the final price. We bring Abatement Technologies containment so the repair doesn’t spread debris through the house.
Leaks and Disconnections
Most comfort complaints trace back to a joint that came apart behind a register or above a ceiling. We locate it, reseal it, and verify airflow afterward. Small repair, real difference in the room.
Crushed and Pinched Runs
A run pinched under a joist or flattened behind drywall can’t move its rated airflow. We replace the damaged span with properly supported duct. If the layout caused the pinch, we fix the routing so it doesn’t happen again.
Duct Replacement
Duct Replacement is the swap of one or more duct runs, as opposed to a whole-system rebuild, and it’s what we recommend when a single run is crushed, contaminated, or made of material that’s past its life. This is common in Thornton homes that have had a renovation or an equipment change without the duct being reworked to match. We pull the failed section, install new duct sized to the branch, seal it, and pressure-check the result. Duct replacement in Thornton typically runs $400-$2,200 depending on the length and location of the run and whether any drywall or ceiling access is needed. The written estimate sets the final price, and it’s free. Our technicians have up to 12 years of experience with this kind of targeted work.
Choosing the Right Material
Flex has its place in a short, straight run; rigid duct holds up better where runs are long or airflow is high. We pick the material to fit the run rather than defaulting to the cheap option. That choice is why the repair lasts.
Verifying the Result
After a replacement we recheck airflow at the register and confirm the new run is sealed at both ends. You get before-and-after photos of the work. No guesswork, no “trust us.”
Ductwork Installation
Ductwork Installation covers fitting new duct routes into a home – tying in an addition, running a branch to a finished basement, or adding a return where the system is starved for air. It’s a different job from a full HVAC build-out; here we’re extending and integrating, not starting from a bare structure. We match the new work to the existing duct so the system stays balanced, and we’re familiar with Honeywell and Aprilaire controls so the new runs work with the air-quality equipment already on your system. Ductwork installation in Thornton typically runs $350-$1,800 depending on the run length and how much access is needed. The written estimate sets the final price, and the estimate is free.
Tying Into Existing Duct
A new branch is only as good as its connection to the trunk. We cut in, seal, and size the branch so it doesn’t steal airflow from rooms already served. Balanced is the goal, not just connected.
Returns and Air Balance
Adding supply without enough return starves the system and the new room runs poorly. We check the return path at the same time and add capacity where it’s short. That’s the difference between a comfortable room and a noisy one.
Brands We Service
We service Honeywell and Aprilaire whole-home air-quality systems and know where they integrate with your ductwork, so new or repaired runs don’t fight the equipment already in place. We also work with Guardsman components where they show up in a system. Whether it’s a filtration cabinet, a humidifier tied into the supply plenum, or a zone damper, we’re careful around premium accessories rather than ripping them out to make room for duct.
Our cleaning and repair work runs on Rotobrush, Nikro, and Abatement Technologies equipment, so we’re comfortable with the same professional-grade gear used by commercial and restoration contractors. Whether you have Honeywell, Aprilaire, Guardsman, or any other make, we can help. Call (888) 495-2236 for a free estimate.
See the difference
Before
After
Before
After
Before
AfterSigns You Need a Pro Right Now
- Rooms that won’t heat or cool evenly. A wide gap between rooms usually means a duct is leaking, disconnected, or pinched. That lost air is money straight out of the register.
- Whistling or roaring at the registers. A high-pitched whistle points to a restricted or undersized run; a roar suggests a leak or a crushed section. Both cut performance and strain the blower.
- Dust that returns within days of cleaning. Recurring dust often means debris is being pulled in through a torn duct in the attic or crawlspace. The cleaning never “fails” – the duct is open.
- Visible damage in attic or crawlspace runs. Torn flex, sagging duct, or joints that have pulled apart are easy to spot and quick to fix once you know where they are. We check these on every call.
- A recent remodel or equipment change. Drywall dust and new equipment loading can overwhelm a duct system that was never reworked to match. A repair may be the fastest way to get airflow back.
Our Process, Step by Step
- 1
Walkthrough and diagnosis. We look at the visible duct runs, check for leaks, and assess airflow at the registers. We don’t guess at the problem from the driveway.
- 2
Containment and protection. We set up Abatement Technologies containment and Nikro HEPA capture so opening the system doesn’t spread debris. This is remediation-grade discipline on an ordinary repair.
- 3
Cleaning before repair. We clean the runs with Rotobrush rotary-brush equipment so we’re not sealing new duct over old debris. Clean first, then fix.
- 4
The repair or replacement. We reseal joints, replace failed spans, or install new runs, sized and sealed to the equipment. Every step is documented.
- 5
Airflow check and photos. We verify the result at the register and hand you before-and-after photos of your own ducts. You see exactly what changed.
How Much Does Air Duct Repair Cost in Thornton?
Air duct repair in Thornton typically runs $250-$1,100 depending on the number of leaks or damaged sections and how accessible they are. A single resealed joint sits at the low end; several disconnected or crushed runs in a tight attic sit at the high end. A partial duct replacement in Thornton typically runs $400-$2,200, while a whole-system duct replacement runs $1,500-$5,500 and new HVAC duct installation runs $1,200-$4,500. Small jobs are common, so most repairs land well under the top of the range. These are typical estimates; the written estimate sets the final price.
Several things move the number: how many runs are affected, whether the damage is in an easy attic or a finished ceiling, the material needed, and whether the existing system has premium controls to work around. To avoid overpaying, ask for a written estimate that names the repairs, not a lump price, and get before-and-after photos as part of every job. Our estimate is free and there are no per-vent charges – the price is per system, agreed before work starts. Call (888) 495-2236 for an exact quote. Estimates are free.
Our Service Area Near Thornton
We work across Thornton and the surrounding towns, including Northglenn, Federal Heights, Welby, Derby, Sherrelwood, Platteville, and Broomfield. We also serve nearby Dacono and Niwot when a duct repair or cleaning is next on your list. Response time depends on location and the day, but we move fast within the metro area. If you’re unsure whether your address is in range, call (888) 495-2236.
Serving Thornton, CO – Our Local Coverage Area
We serve Thornton 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 Thornton
Air duct repair is the fix of damaged ductwork – resealing separated joints, reconnecting a run, repairing a torn flex section, or replacing a crushed span – so your system moves air where it’s supposed to. It’s a structural fix rather than a cleaning, though we often do both on one visit. We repair what we find during a cleaning so a second contractor and a second appointment aren’t needed. Call (888) 495-2236 for a free estimate.
Most single-run repairs are a same-day job, often a few hours, while a partial or full replacement can run a day or more depending on access and the number of runs. The estimate tells you the time up front so nothing surprises you. We also clean before we repair, which adds a bit of time but means no sealing new duct over old debris. Call (888) 495-2236 to schedule.
Air duct repair in Thornton typically runs $250-$1,100, partial replacement $400-$2,200, and full replacement $1,500-$5,500. The written estimate sets the final price, and the estimate is free. We give one flat price per system, agreed before work starts, with no per-vent charges. Call (888) 495-2236 for an exact quote.
Yes, we service Honeywell and Aprilaire whole-home air-quality systems and are familiar with how they integrate with ductwork, so repairs and new runs don’t conflict with the equipment in place. We also work with Guardsman components where present. Your Honeywell or Aprilaire system deserves a compatible crew. Call (888) 495-2236 for a free estimate.
Same-day service is often possible for air duct repair in Thornton, depending on the job and the schedule. We answer 24/7, and fast dispatch runs from 7am to 7pm, Sunday through Friday. We’re closed Saturday; a call outside dispatch hours is booked into the next opening, Sunday through Friday, 7am to 7pm. Call (888) 495-2236.
We stand behind our work and offer a satisfaction guarantee, with the details confirmed in your written estimate before any work starts. We also give you before-and-after photos of your own ducts so you can see exactly what was done. Call (888) 495-2236 to talk through the specifics for your system.
Clear access to registers, the furnace closet, and any attic or crawlspace hatch, and move breakable items away from the work area. Turn off nothing yourself – we handle the system and the equipment. If you have pets, keep them out of the work area while we have the system open. Call (888) 495-2236 if you’re unsure what to clear.
Schedule Your Air Duct Repair Service in Thornton Today
If a room won’t heat, dust keeps coming back, or you’ve spotted torn duct in the attic, a repair today is a cheaper fix than a replacement later. We repair what we find, clean on the same visit, and hand you before-and-after photos. Call (888) 495-2236. We answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday. Estimates are free and there’s no obligation.
Written by the team at Duct Cleaning Thornton.