Duct repair, sealing, insulation, and installation for maximum HVAC efficiency. NATE Certified technicians Licensed in 8 Colorado jurisdictions.
Leaky or poorly insulated ductwork can waste 20-30% of your heating and cooling energy — costing you hundreds of dollars per year. On Time Heat & Air provides comprehensive ductwork services including leak detection and sealing, duct insulation, duct repair and replacement, and new duct design and installation for remodels and additions. Colorado's dry climate is especially hard on duct tape and mastic sealant, causing joints to dry out and leak over time. A professional duct inspection can identify problems and dramatically improve your system's efficiency.
Our NATE Certified technicians have the training and real-world experience to handle any ductwork services job. We hold active licenses in 8 Colorado jurisdictions — Adams, Arapahoe, Aurora, Broomfield, Commerce City, Denver, Douglas, and Jefferson — so we're authorized to work anywhere in the Denver metro. We provide upfront pricing, honest recommendations, and stand behind every job.
Select your city for location-specific ductwork services information:
Fast diagnosis and repair for all AC brands. Same-day emergency service available 24/7.
Professional central air installation and replacement. Free estimates on all new systems.
Expert furnace repair for all makes and models. 24/7 emergency heating repair available.
New furnace installation and replacement. Energy-efficient systems with financing options.
Heat pump installation, repair and maintenance. Year-round comfort, energy-efficient.
Free tips and guides from our NATE Certified team:
Your ductwork is hidden behind walls and above ceilings, so problems develop silently. Leaky ducts waste 20-30% of your heating and cooling — money that goes into your attic, crawl space, or walls instead of your living areas. In Denver homes where HVAC runs 8-10 months per year, that waste adds up fast.
The most common ductwork issue we find in the Denver Metro is disconnected joints. Colorado's temperature swings — 60°F days followed by 20°F nights — cause duct joints to expand and contract repeatedly, loosening connections over time. A disconnected duct run means conditioned air dumping into your attic while one room stays uncomfortable.
We often find that fixing the ductwork solves comfort problems homeowners assumed required a new AC or furnace. Before recommending a system replacement, we inspect the duct system to make sure the real problem isn't a $500 duct repair rather than a $7,000 equipment replacement. See our ductwork cost guide for pricing.
Common questions from Denver Metro homeowners.
Signs include uneven temperatures between rooms, excessive dust, higher-than-normal energy bills, and rooms that never reach the thermostat setting. Leaky ducts can waste 20–30% of your heating and cooling.
Duct sealing and minor repairs run $200–$800. Full ductwork replacement for an average Denver home costs $2,000–$5,000 depending on the size of the system and accessibility.
Absolutely. Leaky, undersized, or poorly insulated ducts are one of the top reasons AC systems underperform. We often find that fixing the ductwork solves comfort problems that homeowners assumed required a new AC unit.
We focus on duct repair, sealing, and replacement rather than duct cleaning. If your ducts are leaking or damaged, cleaning won't fix the underlying problem. We'll tell you honestly whether your ducts need repair or just maintenance.