Custom Duct Design & New Installation
Proper ductwork design is both a science and a craft. Our Manual D duct design process calculates the exact size, length, and layout of every supply and return duct to deliver the right amount of conditioned air to each room based on its specific heating and cooling load. We account for friction loss, the number of turns, register placement, and return air requirements. For new construction, we work with your builder to route ducts efficiently within the available space while minimizing energy loss. For existing homes that need new ductwork, whether converting from a ductless system or replacing deteriorated ducts, we design routes that maximize airflow while minimizing visual impact. We install using quality sheet metal, insulated flex duct, or a combination depending on what works best for your home's configuration.
Duct Sealing & Leak Repair
The average home loses 20 to 30 percent of its conditioned air through duct leaks, according to Energy Star. In Houston, where your AC may run 8 to 9 months per year, that is a massive amount of wasted energy and money. Leaky ducts also create pressure imbalances that pull in unconditioned attic air, dust, insulation fibers, and moisture, degrading both comfort and indoor air quality. Zoop HVAC Repair uses duct pressure testing to measure how much air your system is losing, then seals leaks using mastic sealant and UL-listed foil tape at every connection, joint, and penetration point. We do not use cloth-backed duct tape, which deteriorates and fails within a few years. For severe cases, we offer Aeroseal technology that seals leaks from the inside out, reaching areas that are impossible to access manually.
Ductwork Repair & Replacement
Houston's attic environments are brutal on ductwork. Temperatures in unconditioned attic spaces regularly exceed 140 degrees in summer, causing flex duct connections to loosen, insulation to degrade, and condensation to form on improperly insulated sections. Add rodents, raccoons, and the occasional roof leak, and it is common to find ductwork in Houston homes that is crushed, disconnected, water-damaged, or infested. Our repair services address specific problem areas, while our replacement service provides a complete new duct system when repairs are no longer practical. Signs you may need ductwork repair or replacement include rooms that are always too hot or too cold, visible damage or sagging ducts in the attic, musty odors from the vents, excessive dust, and unusually high energy bills. We provide honest assessments and recommend repairs when possible, replacement when necessary.
What's Included
Frequently Asked Questions
How do I know if my ductwork needs repair or replacement?
Common signs include rooms that are consistently hotter or cooler than others, higher than expected energy bills, excessive dust coming from vents, musty or stale odors, visible damage or sagging in accessible duct sections, and HVAC equipment that runs constantly without reaching set temperature. If your ductwork is over 15 to 20 years old, an inspection is strongly recommended.
How much does ductwork installation cost in Houston?
New ductwork installation for a typical Houston home ranges from $3,000 to $8,000 for a complete system depending on home size, number of zones, and accessibility. Duct sealing typically costs between $1,500 and $3,000. Individual duct repairs may range from $200 to $800 depending on the location and extent of damage. We provide detailed quotes after inspecting your specific situation.
Should I seal or replace my existing ductwork?
If your existing ductwork is properly sized and structurally sound but has leaks at connections and joints, sealing is the cost-effective choice and can improve efficiency by 20 to 30 percent. If the ducts are undersized, crushed, water-damaged, or the insulation is deteriorated, replacement is the better investment. We inspect and give you an honest recommendation based on the actual condition.
Can bad ductwork affect my energy bills?
Significantly. Leaky or poorly insulated ductwork running through a 140-degree Houston attic can waste 20 to 40 percent of the energy your HVAC system produces. For a home spending $300 per month on cooling, that could mean $60 to $120 per month wasted. Duct sealing and insulation improvements often pay for themselves within one to two cooling seasons.
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