Disconnected runs reconnected
The most common find: a run that has come apart at a joint or a take-off, dumping conditioned air into the attic or crawlspace. It is reconnected, mechanically fastened and sealed, not just pushed back together.
Fix the ductwork, and the system you already own starts working
Duct Repair in Fort Collins, CO
Most duct problems are not dirt and not leaks — they are damage. A run common duct problems in the attic, a flex duct crushed by a box stored on top of it, a section collapsed after thirty summers, a take-off that was never connected properly in the first place. The symptoms are unmistakable: a room with no airflow at all, a register that blows weakly while the rest of the house is fine, or a system that runs constantly because half its air never arrives. Duct repair fixes the physical damage so the system can do its job. DNA Refrigeration Heating & Cooling repairs ductwork across Fort Collins. Call (970) 932-2324 any time.
Find the damaged run first. Then fix it properly.
About this service
What duct repair in Fort Collins really involves
Duct repair is the physical fixing of damaged ductwork: reconnecting disconnected runs, replacing collapsed or crushed sections, repairing torn flex duct, refitting take-offs and registers, and supporting runs that have sagged until they kink. It is distinct from cleaning, which removes debris, and from sealing, which closes leaks — and an honest inspection says which of the three your ducts need.
The Fort Collins housing stock makes duct repair a common job. Nearly half the city's homes are pre-1990, and their ductwork has had thirty-plus years of attic heat, crawlspace damp and the occasional foot through a ceiling joist. Much of it was retrofitted into houses never built for ducts, which means runs threaded through tight spaces where they are easily crushed or kinked, and flex duct — common in later additions — that sags between supports until it chokes its own airflow. Manufactured and modular homes have their own pattern: crossover ducts under the house that disconnect or tear, which is a known failure in that stock. And the comfort symptoms that get blamed on the furnace or the air conditioner — the hot upstairs, the cold basement, the one room that never cools — are often a single damaged run. A repair visit starts with finding that run: airflow measured at every register, the accessible ductwork inspected, and a camera where the runs cannot be seen directly. No price figure is published on this page because no dated cost guide for duct repair was found in the November 2026 research.
- ✓ Disconnected, crushed and collapsed runs fixed
- ✓ Airflow measured at every register
- ✓ Repair, sealing and cleaning kept separate
- ✓ Open 24 hours — call any time, day or night
What's included
What our duct repair service includes
A repair should restore airflow to the rooms that lost it, and leave the ductwork supported and sealed so it stays fixed. Here is what goes into that.
Collapsed and crushed sections replaced
Flex duct that has sagged, kinked or been crushed by storage is replaced with properly supported duct, with supports spaced so it cannot sag again. Rigid sections that have collapsed are replaced, not patched.
Torn flex duct repaired or replaced
Tears in the inner liner or the outer jacket are repaired where the damage is small and the duct is otherwise sound, and replaced where it is not. A tear is a leak and a dust path at the same time.
Take-offs and registers refitted
Take-offs that were never properly connected and registers that blow weakly because the boot behind them is disconnected or crushed are refitted, so the air actually reaches the room.
Supports and strapping corrected
Ducts that sag between supports kink and choke airflow. Runs are re-supported at proper spacing, so the repair lasts longer than the season.
Leakage test after repair
After the physical repair, the system is tested for leakage so any remaining leaks are found and sealed, and the airflow at each register is measured to confirm the repair worked.
How it works
How our duct repair process works
Call (970) 932-2324 any time. Tell us which rooms are affected, what the airflow feels like at each register, and whether anything changed recently — a renovation, attic work, a new roof.
We measure airflow at every register, inspect the accessible ductwork, and use a camera where runs cannot be seen directly, so the damaged run is found rather than guessed at.
You get a written quote naming the damaged sections and the repair method, with the distinction between repair, sealing and cleaning explained where it applies.
The damaged runs are reconnected, replaced or refitted, and re-supported at proper spacing. The work area is left clean.
We measure airflow at each register again and test for leakage, so the repair is proven by the numbers before we leave.
STEP 01Call and describe the symptom
Call (970) 932-2324 any time. Tell us which rooms are affected, what the airflow feels like at each register, and whether anything changed recently — a renovation, attic work, a new roof.
Tools & methods
Tools and methods we use on every job
Airflow measurement
Airflow at every register, before and after, so the repair is proven room by room.
Inspection cameras
Cameras that show the inside of runs that cannot be seen directly, finding collapses and disconnections without opening walls.
Duct leakage tester
Leakage measured after the physical repair, so remaining leaks are found and sealed.
Flex duct and rigid duct materials
Replacement sections matched to the existing system, properly supported so they cannot sag again.
Mastic and rated tape
Durable sealing for the repaired joints, so a reconnected run stays connected.
Thermal imaging camera
Temperature differences across ductwork and registers that reveal disconnected runs and leaks.
Real results
Duct repair, home by home in Fort Collins
Fort Collins homes
A disconnected run in a Midtown attic
Midtown's 1950s–1970s ranches often have ductwork that was added years after construction, threaded through attics where nobody has looked since. A run that has come apart at a joint dumps conditioned air into the attic, and the room it served gets nothing.
What good work addresses: finding the disconnected run by measuring airflow at every register, reconnecting and mechanically fastening it, sealing the joint, and verifying the airflow at the register afterwards.
Call (970) 932-2324 → Fort Collins homes
Crushed flex duct in an Old Town addition
Old Town's pre-1930 homes have additions and retrofitted runs threaded through tight spaces, where flex duct is easily crushed by storage or kinked where it turns. The room at the end of that run gets a whisper of air while the rest of the house is fine.
What good work addresses: replacing the crushed section with properly supported duct, re-routing it where the original path was the problem, and measuring the airflow at the register to confirm the fix.
Call (970) 932-2324 → Fort Collins homes
A crossover duct under a manufactured home
Manufactured homes have their own duct pattern: crossover ducts under the house that connect the two halves, which disconnect or tear with age and movement. The symptom is one half of the home heating or cooling while the other does not.
What good work addresses: inspecting the crossover ductwork under the home, reconnecting or replacing the damaged section, and supporting it so it cannot disconnect again.
Call (970) 932-2324 → Problems we solve
Duct repair questions we answer every week
Duct repair is a diagnostic job first: find the damaged run, then fix it. These are the questions that start that conversation.
Ask a pro →One room has no airflow — is it the duct?
Usually, yes. A room with no airflow while the rest of the house is fine almost always means a disconnected, crushed or collapsed run serving that room. Measuring airflow at every register finds it quickly.
Is duct repair the same as duct sealing?
No. Repair fixes physical damage — disconnected, crushed or torn ductwork. Sealing closes leaks in otherwise sound ducts. A house can need either or both, and the inspection is what decides.
Will duct repair fix my hot upstairs?
If the cause is a damaged run starving the upper floor, yes. If the cause is undersized ducts or a system sized wrong at altitude, repair helps but does not fix it, and we will say so rather than sell a repair for a sizing problem.
How much does duct repair cost in Fort Collins?
The November 2026 research found no dated cost guide for duct repair, so this page publishes no price figure. Your written quote follows an inspection that names the damaged sections and the repair method.
Proof you can check
How HVAC licensing works in Fort Collins
- HVAC work in Fort Collins is licensed by the City of Fort Collins, not the state — Colorado licenses only electricians and plumbers at state level. Fort Collins licenses HVAC contractors through the City — ask us for our licence details when you call.
- Refrigerant handling follows EPA Section 608 rules as a general industry requirement.
- 5.0 ★ (23 Google reviews) — all 23 reviews are 5-star.
- Open 24 hours · 7 days a week — 2757 Sternwheeler Dr, Fort Collins, CO 80524.
Customer reviews
What Fort Collins Neighbors Say
★★★★★
“These guys rock! Anytime we need something, Denis pops in and fixes it like it was nothing. Everyone from their crew has a great attitude, and we won’t call anyone else for our heating, cooling, or other general maintenance work! Read the first sentence again.”
MD
Mike DeeGoogle review · a year ago
★★★★★
“This guy was amazing. Came to the house and within minutes he diagnosed the problem and had my refrigeration unit up and running like brand new. Would recommend 10 out of 10”
RW
Rob WheelerGoogle review · a year ago
A room with no airflow while the rest of the house is fine, a register that blows weakly, or a system that runs constantly are the signs. Measuring airflow at every register finds the damaged run quickly.
No. Repair fixes physical damage — disconnected, crushed or torn ductwork. Cleaning removes debris from inside the ducts. Sealing closes leaks in otherwise sound ducts. They are three different jobs, and the inspection decides which one your ducts need.
Yes. A disconnected run dumps conditioned air into the attic or crawlspace, so the system runs longer to hold the set temperature while one or more rooms get nothing. Reconnecting it is often the cheapest efficiency improvement a house can get.
No dated cost guide for duct repair was found in the November 2026 research, so no price figure is published here. Your written quote follows an inspection that names the damaged sections and the repair method.
Ready when you are
One room with no airflow? Call (970) 932-2324
Tell us which rooms are affected and we will measure the airflow at every register, find the damaged run, and quote the repair in writing. Open 24 hours, 7 days a week.
Call (970) 932-2324 →
Call to book
Get in Touch
Call (970) 932-2324 any time, day or night. We are open 24 hours, 7 days a week, from 2757 Sternwheeler Dr, Fort Collins, CO 80524. Phone is the way to reach us — there is no email address for the business, so call any time, day or night — we are open 24 hours, 7 days a week.
Call anytime(970) 932-2324
Office hoursOpen 24 hours · 7 days a week