Same-Day Service
Most service calls handled same-day across the Denver metro — and we answer the phone 24/7.
The Hidden Efficiency Drain
Your Ducts May Be Undermining Your HVAC System
Your furnace or air conditioner is only as effective as the duct system delivering conditioned air to each room. Studies from the U.S. Department of Energy suggest that a typical home loses 20 to 30 percent of its conditioned air to duct leaks — paying to heat or cool your attic, crawl space, or wall cavities instead of your living areas. That translates directly to higher utility bills, uneven temperatures, and an HVAC system that runs longer and wears out faster. The frustrating part is that most homeowners never know it’s happening.
Done has been diagnosing and repairing ductwork for Denver metro homes since 1999. Whether your ducts have disconnected joints, crushed flex duct in the attic, undersized trunk lines choking airflow, or simply leaked their way to inefficiency over the years, we find the problem and fix it. Learn more about our full ductwork capabilities or call 833-539-9153 to schedule a duct inspection today.
- Duct Design and Layout For additions, renovations, or homes with chronic comfort issues, Done designs duct systems using Manual D load calculations to match airflow precisely to each room's needs.
- Duct Repair and Sealing We locate leaks, disconnected joints, and damaged sections, then seal or repair them with code-compliant materials — not duct tape, which fails within a few years.
- Full Duct Replacement When repairs no longer make sense, Done removes old, deteriorated ductwork and installs a new system built to last — properly insulated, sealed, and sized for your home.
Warning Signs
Signs Your Ductwork May Have a Problem
Ductwork problems often get misdiagnosed as HVAC equipment failures — leading homeowners to replace perfectly good furnaces or air conditioners when the real issue is in the ducts. These are the signs to watch for.
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Rooms That Are Always Too Hot or Too Cold
If one bedroom feels like a sauna in summer and an icebox in winter while the rest of the house is comfortable, uneven duct sizing or a disconnected branch line is likely to blame.
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Utility Bills That Keep Climbing
Leaky ducts force your HVAC system to run longer to meet the thermostat setpoint. If your energy bills are rising without an obvious reason, a duct inspection is a smart first step.
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Weak Airflow at Registers
Low airflow from one or more registers often indicates a collapsed flex duct section, a disconnected joint, or significant leakage before conditioned air reaches that part of the home.
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Excessive Dust Accumulation
Leaky return ducts pull unfiltered air from attics and crawl spaces, bypassing your filter entirely and distributing insulation fibers, dust, and debris throughout the home.
Our Ductwork Capabilities
Everything Your Duct System Needs, Done Right
Done handles the full range of residential ductwork — from a single leaking joint to a complete system redesign. Every job uses code-compliant materials and is completed by licensed HVAC technicians.
- Duct Inspection and Leak Testing We use pressure testing and visual inspection to find leaks, disconnected joints, and airflow restrictions — giving you a clear picture of your duct system's condition before any work begins.
- Aeroseal Duct Sealing For leaks that are hard to reach, Done offers Aeroseal — a process that injects sealant particles into pressurized ducts so they find and seal leaks from the inside, including tiny cracks and gaps.
- Duct Redesign for Additions and Remodels Adding a room or finishing a basement? Done designs and installs new duct branches using Manual D load calculations to ensure every new space gets the airflow it needs without starving the rest of the house.
- Duct Insulation Upgrades Uninsulated or under-insulated ducts in Denver attics lose significant heat in winter and absorb heat in summer. Done re-wraps and seals duct insulation to code so conditioned air arrives at your registers at the right temperature.
Our Process
How Done Diagnoses and Fixes Your Ductwork
We never guess about ductwork. Done uses a methodical inspection-first approach so repairs target the actual problem and you don't pay for work you don't need.
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Duct System Inspection
A Done technician inspects accessible ductwork and performs airflow and pressure testing to identify leaks, blockages, disconnections, and design deficiencies.
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Written Assessment and Upfront Pricing
We document what we found, explain it in plain language, and give you upfront pricing before any work begins. No surprises on the invoice.
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Repair or Replacement
Done completes the agreed-upon work using code-compliant materials and proper sealing techniques — whether that means patching a single joint or replacing an entire duct system.
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Post-Work Verification
After repairs, we re-test airflow and pressure to confirm the problem is solved. You should notice the difference the first time your system runs.
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
A duct inspection from Done can identify exactly how much efficiency your home is losing — and what it would take to fix it. Call 833-539-9153 or schedule online. Available 24/7 across the Denver metro.
What Our Customers Say
Don't just take our word for it — hear from our satisfied customers
★★★★★
Darrell at Done Plumbing was working on our Water Heater and had replaced it with a new one was Amazing and hardworking a Great Guy once you have a conversation with him if your needing a New Water Heater or anything else with Plumbing Cooling and Heating and Electric Call Done Plumbing
★★★★★
This is my second experience with Done. It was just as great as my first experience. The technicians are timely, friendly and very competent. Same day service each time without an up charge. They do great work!
★★★★★
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 !
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 ductwork needs to be replaced or just repaired?
It depends on the system’s age, material, and condition. Sheet metal ducts from the 1980s or earlier are often still functional but may benefit from sealing. Flex duct that’s collapsed, kinked, or disconnected in multiple places may be more cost-effective to replace than to repair section by section. Done’s technicians inspect your system and give you an honest recommendation based on what they find — not on what generates the most revenue.
What is Aeroseal and is it worth it?
Aeroseal is a duct-sealing process where a non-toxic sealant is injected into your pressurized duct system. The particles are carried to leak points by airflow, where they bond and seal gaps from the inside — reaching places a technician’s hands never could. It’s particularly effective for homes with leaky ducts in finished walls or ceilings where manual access is impossible. Done can tell you whether your home is a good candidate after a basic inspection.
Will fixing my ductwork actually lower my energy bills?
In homes with significant duct leakage, the savings can be meaningful. A well-sealed duct system delivers more conditioned air to living spaces and less to unconditioned areas, so your HVAC system runs fewer cycles to maintain your set temperature. Actual savings vary by home, but duct sealing and repair frequently pay for themselves over time through reduced heating and cooling costs. Financing options are available if upfront cost is a concern.
Does Done handle ductwork for new room additions?
Yes. Adding square footage to your home without properly extending your duct system is one of the most common causes of comfort complaints we see. Done designs new duct branches using Manual D load calculations to ensure each new space gets the right amount of airflow without robbing other rooms. We coordinate with your contractor or work independently depending on your project timeline.
*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.
