Same-Day Service
Most service calls handled same-day across the Denver metro — and we answer the phone 24/7.
Denver's Ductwork Specialists
When Your Ducts Fail, Your Whole System Suffers
Your HVAC system can only deliver the comfort and efficiency you’re paying for if the ductwork is doing its job. In many Denver homes — especially those built in the 1970s through the 1990s — ducts develop leaks at joints and connections, collapse in unconditioned crawl spaces, or were never properly sized for the home’s layout. The result is uneven temperatures room to room, an AC or furnace that runs longer than it should, and monthly energy bills that are higher than they need to be. Done has been diagnosing and correcting ductwork problems across the Front Range since 1999. We seal leaking joints, replace damaged sections, and — when a system is beyond repair — design and install a new duct layout built for your home. See how proper ductwork connects to the rest of your cooling system.
- Restored Airflow and Room Balance Sealing leaks and repairing collapsed sections brings conditioned air back to rooms that were being starved — no more hot spots or cold corners.
- Lower Monthly Energy Bills Air escaping into unconditioned attic or crawl space is money lost. Properly sealed ducts let your HVAC system work less to achieve the same comfort level.
- Better Indoor Air Quality Leaky return ducts can pull in dust, insulation particles, and outdoor pollutants. Sealing them keeps what's circulating through your home cleaner.
Is Your Ductwork the Problem?
Warning Signs of Leaking or Damaged Ducts
Duct problems often hide in attics, crawl spaces, and inside walls — but they leave clues you can spot from inside the house.
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Rooms That Won't Reach the Right Temperature
If the living room is comfortable while a bedroom stays stuffy in summer or cold in winter, the duct serving that room may be leaking, kinked, or undersized.
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Your System Runs Longer Than It Should
When conditioned air is escaping through duct leaks before reaching the registers, your HVAC has to work overtime to compensate — driving up runtime and energy costs.
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Unexplained Increases in Utility Bills
If your energy bills have climbed but your usage habits haven't changed, leaky or deteriorating ducts are one of the more common culprits worth investigating.
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Excessive Dust or Musty Odors from Vents
Dust blowing from registers — or smells that weren't there before — can indicate that return ducts are pulling in air from a crawl space, attic, or wall cavity instead of from conditioned living space.
What We Do
Ductwork Services from Done
Done handles everything from targeted leak sealing to complete duct system replacement — and we'll tell you honestly which one your home actually needs.
- Duct Inspection and Diagnostics We assess your duct system visually and can perform pressure testing to identify where air is escaping and how significant the leakage is before recommending any repairs.
- Duct Sealing Leaking joints and connections are sealed with mastic sealant or metal tape — the right materials for a lasting fix, not the duct tape that fails within a few seasons.
- Duct Repair Collapsed flex duct, disconnected sections, and damaged rigid metal runs are repaired or replaced in kind — restoring proper airflow without a full system replacement.
- Full Duct System Replacement When an existing duct system is beyond repair or was never properly designed, we plan and install a new layout sized for your home and connected system. Ask about financing through our financing options.
How It Works
The Done Duct Repair Process
Duct problems are often hidden, so we start with a thorough look before recommending anything. Here's what to expect.
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Schedule an Assessment
Call 833-539-9153 or book online. Tell us what you're experiencing — uneven temps, high bills, unusual dust — and we'll schedule a time to take a look.
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Inspection and Diagnosis
A Done technician inspects accessible ductwork in your attic, crawl space, and mechanical room, identifies problem areas, and explains what they found in plain terms.
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Written Quote Before We Start
You'll receive a clear scope of work and price before any repairs begin. We'll also flag whether a targeted repair or a broader replacement makes more sense for your situation.
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Repair, Test, and Confirm
After completing the work, we test airflow at the registers and verify the system is operating correctly before we pack up — and we leave the work area clean.
Current Specials
Save on the work your home needs most.
Why Choose Done
Upfront Pricing
Flat-rate pricing approved before work begins — no surprises on the invoice.
Licensed & Insured
Fully licensed, bonded, and insured — plumbing, HVAC, and electrical under one roof.
Satisfaction Guaranteed
If it isn't right, we make it right — backed by our workmanship guarantee.
Stop Paying to Heat and Cool Your Attic
Call 833-539-9153 or book online — Done is available 24/7 across the Denver metro.
What Our Customers Say
Don't just take our word for it — hear from our satisfied customers
★★★★★
Zach provided outstanding service today! He was friendly, professional, and took the time to explain everything about my AC in a way that was easy to understand. He answered all of my questions thoroughly and never made me feel rushed. I really appreciated how informative and helpful he was throughout the entire visit. Excellent customer service—I highly recommend !
★★★★★
Very impressed by the professionalism and knowledge of Done! Zach came out on a Sunday morning, took the time to evaluate the unit as a whole, explained the issue, and readily corrected the sensor problem with my AC/furnace. Highly recommend!
Maintenance Membership
Join the Care Club
Total home service care, on a schedule.
Members get priority scheduling, seasonal HVAC tune-ups, an annual plumbing & electrical safety inspection, and exclusive discounts — for less than the cost of a single emergency call.
- Priority scheduling
- Seasonal HVAC tune-ups
- Annual safety inspection
- Exclusive member discounts
- Free dispatch on repairs
- No long-term contracts
Frequently Asked Questions
How do I know if my ducts are leaking?
The most common signs are rooms that are hard to heat or cool, a system that runs constantly, rising energy bills, and excessive dust coming from vents. The only way to know for certain is a professional inspection, which may include a pressure test to measure actual leakage. Done can assess your system and give you an honest answer.
Can leaky ducts affect my indoor air quality?
Yes. Return duct leaks are particularly problematic because they pull air from wherever they can get it — attic insulation, crawl space dirt, wall cavities — and circulate that air through your home. Sealing return leaks is one of the more impactful things you can do for air quality in an older home.
Is duct sealing worth it, or should I just replace the whole system?
It depends on the condition of your existing ducts and how extensive the damage is. Targeted sealing is usually cost-effective when the duct system’s layout is sound but joints and connections have opened up over time. If ducts are collapsed, improperly sized, or in poor condition overall, replacement makes more sense long-term. Your Done technician will give you an honest assessment of which option fits your situation.
Will duct repairs make my AC or furnace more efficient?
In many cases, yes. When conditioned air reaches the rooms it’s intended for instead of leaking into an attic or crawl space, your HVAC system doesn’t have to run as long to reach the thermostat setpoint. The efficiency improvement depends on how much leakage existed before — homes with significant duct losses often see a noticeable difference. For a full picture of your AC system performance, a tune-up alongside duct repairs is worth considering.
*Offers cannot be combined with other promotions or applied to dispatch fees. No cash value. Must present offer at time of service. Call for details.
