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Brandenburg Plumbing, Heating, & Air
Highland Lakes & North Austin

Ductwork Services - Sealing, Insulation & Design for Better Comfort

Brandenburg Plumbing seals, insulates, repairs, and designs ductwork for homes across the Highland Lakes and North Austin. Leaky or poorly insulated ducts in hot Texas attics waste energy and cause hot and cold spots. We hold Texas HVAC license TACLA00108111E (TDLR), quote the price upfront before work begins, and our phones are answered 24/7.

Your ductwork is the hidden backbone of your HVAC system. Leaky or poorly insulated ducts—especially in Texas attics where temperatures can exceed 140°F—waste energy and create uncomfortable hot and cold spots. We seal, insulate, repair, and design duct systems to deliver even temperatures and cleaner air throughout your home.

Licensed & insured · Same-day service · Upfront pricing

(512) 756-9847
Ductwork services by Brandenburg Plumbing

Highland Lakes & North Austin

Why Brandenburg

Why hire a licensed HVAC contractor for ductwork?

HVAC contractors in Texas are licensed by the Texas Department of Licensing and Regulation. We hold Texas HVAC license TACLA00108111E, carry insurance, quote the price upfront, and back every ductwork job with our lifetime labor guarantee.

29Years in Business
10,000+Jobs Completed
15+Team Members
800+Five-star reviews
Brandenburg Plumbing team
Family-Owned Since 1997
Founded right here in Burnet County, we've been serving our neighbors for 29 years.
Upfront Pricing
No surprises. We provide detailed estimates before any work begins so you know exactly what to expect.
Licensed & Insured
Our team is fully licensed, bonded, and insured for your protection and peace of mind.
Satisfaction Guaranteed
We stand behind our work with a 100% satisfaction guarantee on every job we complete.
Customer reviews

What customers say about Ductwork

  • “Our Air conditioner stopped working the day before a huge party on the hottest day. Josh came out first thing in the morning and installed the part. We joined their HVAC plumbing maintenance and they came back and maintenance the HVAC and then the plumbing guy came and flushed the water heater and did maintenance as well as check flow of house water. The are great people friendly polite and fairly priced. There is great follow up and quick response to questions. Best customer service I have encountered in a long time. It is a forgotten art.”
    TTreva Calderona month ago
FAQ

Ductwork questions we hear most

Find answers to common plumbing and HVAC questions from our expert team.

Common signs of leaky ductwork include rooms that are consistently too hot or too cold, higher-than-expected energy bills, excessive dust in your home, and your HVAC system running longer than it should. In Texas, where most ductwork runs through unconditioned attic space, leaks are extremely common and can waste 20-30% of your conditioned air. We use diagnostic tools to test your ducts and pinpoint exactly where the leaks are.

Texas attic temperatures can easily reach 140°F or more in summer. When your cold, conditioned air travels through uninsulated or poorly insulated ducts in that extreme heat, it can warm up by 10-20 degrees before it even reaches your rooms. This forces your AC to work much harder and drives up your energy bills. Properly insulated ducts maintain the temperature of the air and dramatically improve system efficiency.

Absolutely. Leaky ducts in your attic or crawl space can pull in dust, insulation fibers, mold spores, and other contaminants and distribute them throughout your home. Poorly sealed duct connections also allow humid outside air into the system, which can promote mold growth inside the ducts. Sealing and cleaning your ductwork is one of the most effective ways to improve the air quality in your home.

Most ductwork is designed to last 15-25 years, but in Texas attics where temperatures are extreme, flex duct can deteriorate faster. The connections, tape, and insulation break down over time, leading to leaks and reduced efficiency. If your ductwork is over 15 years old, we recommend a professional inspection to assess its condition and identify any areas that need repair or replacement.

Yes, we design and install complete duct systems for home additions, renovations, and new construction. Proper duct design is critical to system performance—it ensures the right amount of airflow reaches every room. We calculate the correct duct sizes, plan efficient layouts, and use quality materials to deliver a system that keeps your home comfortable and your energy bills low.

Have a question that's not listed here? Give us a call and we'll be happy to help.

Brandenburg One · $19/month

Members save 15% on ductwork

One membership covers plumbing and HVAC. Membership includes spring and fall HVAC tune-ups, an annual whole-home inspection, priority scheduling, and a 2-year repair warranty.

Join Brandenburg One →
  • 15% off service, 5% off installs
  • 2-year repair warranty
  • Priority 2-hour arrival window
Service area

Proudly serving the Highland Lakes & North Austin

Ductwork near you — find your community:

Who shows up

A licensed pro you can put a face to

  • Josh Chachere - Certified HVAC Technician

    Josh Chachere

    Certified HVAC Technician

  • Kyle Shafer - Registered HVAC Technician

    Kyle Shafer

    Registered HVAC Technician

Upfront written pricing

Licensed & regulated in Texas

Master Plumber (RMP)
Lucas Brandenburg, RMP-42793
LP Gas
10829
HVAC (TDLR)
TACLA00108111E
Verify with the State of Texas

Need Ductwork Service?

Our expert technicians are standing by to help. Get upfront pricing with no hidden fees.

(512) 756-9847
  • Licensed & insured
  • Upfront flat-rate pricing
  • Lifetime labor guarantee