You could have a perfectly good air conditioner and still be throwing money out the window every month. Leaky ductwork is one of the most common and most overlooked sources of energy waste in North Texas homes. The average system loses 20 to 30 percent of its conditioned air through duct leaks before that air ever reaches the rooms you’re trying to cool or heat. Adon Complete Air Conditioning and Heating provides professional air duct sealing throughout McKinney, Sherman, Anna, and surrounding Collin and Grayson County communities.
What Leaky Ducts Are Actually Costing You
Duct leaks don’t feel dramatic. There’s no obvious failure, no warning light, no moment where you notice something went wrong. The cost just builds quietly over months and years. Your system runs longer than it should, trying to compensate for air that escaped before reaching the thermostat. Certain rooms stay uncomfortable while others feel fine. Your equipment wears out faster because it’s working harder than necessary.
In North Texas summers, where your AC runs for months on end, the math adds up fast. A duct system losing 25 percent of its output to leaks is essentially running at 75 percent efficiency no matter how good the equipment is. Sealing those leaks is one of the most cost-effective improvements you can make to your home’s comfort and energy costs.
Why Ducts Develop Leaks
Ductwork is built to last, but it won’t last forever without attention. Here are the most common reasons ducts start leaking over time:
- Age and material breakdown. Mastic sealant dries out. Duct tape loses its adhesion. Flex duct connections work loose over the years of expansion and contraction from heating and cooling cycles.
- Poor original installation. A duct system that wasn’t sealed properly from the start will develop problems sooner. This is more common than most homeowners realize, especially in older homes.
- Renovation or repair work. Any time someone works in your attic or crawlspace, there’s a chance that ductwork gets bumped, pulled, or improperly reconnected.
- Foundation settling. As a home settles over time, the structure shifts slightly, and connections that were tight when installed can loosen.
Once a leak forms, it tends to worsen rather than improve, which is why addressing it sooner makes more financial sense than waiting.
What Happens When You Don’t Seal Them
The effects of leaky ductwork go beyond higher energy bills. Return duct leaks draw air from wherever they can, which in most North Texas homes means the attic. That means insulation particles, dust, and outdoor allergens get pulled into your air supply and distributed to every room. Rooms that should be comfortable become stuffy or fail to cool down. Your indoor air quality suffers and your equipment runs more hours than it was designed to handle, shortening its lifespan and increasing the likelihood of needing AC repair.
Duct Sealing vs Duct Repair: What’s the Difference?
These two services address different problems and are often done together. Duct repair addresses physical damage, such as sections that have collapsed, disconnected, or been crushed. Duct sealing addresses the smaller gaps, cracks, and loose connections that let conditioned air escape without any visible structural damage. A duct system can need both or just one. We inspect the full system before recommending anything so you know exactly what you’re dealing with.
Our Duct Sealing Process
We start by assessing the full duct system, which typically means getting into the attic or crawlspace to see things in person rather than guessing. We check all joints and connections, look for dried-out sealant, identify loose flex duct connections, and assess the overall condition of the system.
Sealing is done with professional mastic sealant or metal tape applied to the exterior of the ductwork at every connection and joint. These materials are designed to hold up through years of temperature cycling in attic conditions. We also tie in HVAC maintenance checks during the same visit when it makes sense, so you’re not paying for two separate service calls.
For homes where duct sealing alone isn’t enough, we can discuss whether a new HVAC system installation with properly designed and sealed ductwork makes more financial sense long term.
Frequently Asked Questions
How do I know if my air ducts need sealing?
The clearest signs are rooms that won’t stay comfortable, energy bills that have crept up without explanation, and air that feels dusty or stale. If your system runs for long periods without the house reaching the set temperature, that’s also a strong indicator. The only reliable way to confirm it is a professional inspection. We can access your attic or crawlspace and assess the full system in one visit.
How much does air duct sealing cost in McKinney, TX?
Cost depends on how much of the duct system needs attention and how accessible it is. Sealing isolated problem areas costs less than addressing a system with widespread joint failures. We provide a clear estimate after inspection so there are no surprises. Call (903) 482-4900 to set up a consultation.
What is the difference between duct sealing and duct repair?
Duct repair addresses physical structural damage, such as sections that have collapsed, disconnected, or been crushed. Duct sealing closes the smaller gaps, cracks, and loose joints that allow conditioned air to escape without visible structural failure. Many homes need both, and we often perform both services during the same visit.
How long does air duct sealing last?
Professional mastic sealant and metal tape are designed to hold up for many years under attic conditions. Unlike standard duct tape, which dries out and fails relatively quickly, these materials are rated for the temperature extremes common in North Texas attics. A properly sealed duct system should stay sealed for 10 years or more with normal use.
Does air duct sealing really work?
Yes, when it’s done properly. Homeowners who have their duct systems professionally sealed typically see noticeable improvements in room comfort and reduced energy costs. The improvement is most significant in homes with older duct systems or systems that were never properly sealed at installation. We can give you realistic expectations based on what we find during our inspection.
Schedule Air Duct Sealing in McKinney Today
If your energy bills are higher than they should be or your home just never feels quite right, your ductwork is worth a look. Call Adon Complete Air Conditioning and Heating at (903) 482-4900 or schedule online. We serve Sherman, Anna, Allen, Frisco, Melissa, and all of Collin and Grayson County.
