Professional Duct Sealing in Lafayette, CO

It’s extremely important to have good energy efficiency at your home or business. One major culprit of significant energy loss is leaks in your ductwork system. If you have this problem at your home or business in Lafayette, CO, Welzig Heating and Air is here to help! Our NATE-certified experts specialize in duct-sealing services which will improve your air quality, enhance the performance of your HVAC equipment, and help you save energy!

Expert Evaluation

Did you know that you can lose as much as 30% of conditioned air when dealing with leaks in your ductwork system? This leads to costly energy bills and all sorts of issues that you shouldn’t have to deal with. Fortunately, our experts are fully equipped and ready to seal your ducts efficiently and effectively. With specialized diagnostic equipment, tools, and quality sealing materials, we’ll make sure your ducts are airtight without any issues with leaks.

Duct Sealing BenefitsEnergy-Efficient Duct SealingDuct Leakage Repair

Your duct-sealing service will start with a careful inspection of your entire ductwork system. With specialized equipment, we can pinpoint even the smallest leaks. Once leaks have been identified, we’ll seal them up with foil tape, mastic sealant, or Aeroseal duct sealant, depending on the requirements of your system. Once we are finished, we’ll test your system to ensure optimal operation without the concern of energy loss. When you’re trying to find the best duct-sealing services in Lafayette, CO, make sure to give us a call or send us a text to schedule a service appointment!

Commercial Duct Sealing, Ductwork Sealing & Duct Sealing Boulder, CO, Longmont, CO & Louisville, CO

Duct Sealing Services, Commercial Duct Sealing & Duct Sealing

Duct Sealing SolutionsDuct Leakage RepairEnergy-Efficient Duct Sealing

Satisfied Customers
They Speak For Us

Dave Kaplan-Gomez and James Miltersen installed my new Tankless Water Heater. Both were polite and professional. Care was taken not to damage anything in my house which I really appreciated. I use Welzig for all my HVAC needs and highly recommend them.


Bob came out to look at our swamp cooler and was remarkably helpful and professional. Not only did he give me a knowledgeable diagnosis, but he also taught me a lot in the process. We’ll be calling him for all future needs with our cooling system.


Our 23-year-old A/C system ran out of “borrowed time” and became too difficult to continue maintaining. With great advice from Casey Welzig,, we replaced the old system with a Bryant Evolution A/C system. Max Loustaunau and Seth Bernhardt did an excellent job with removing the old system and installing the new one. Both of them are great to work with — very professional and very personable. We are really amazed at how much better the new system works!

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Duct Sealing Services

Duct Sealing Benefits

Duct Leakage Repair

Energy-Efficient Duct Sealing

Duct Sealing Solutions

Lafayette, CO