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We can inspect, repair, and install both indoor and outdoor gas lines. If you’re looking for reliable, experienced service on your gas line, contact us for more info and to book a job today!

Have you considered the many opportunities and conveniences of installing a gas line? Are you relocating, adding, or upgrading your appliances? Do you have concerns with an existing gas line? Whether you’re moving into or out of a home, making improvements, or worried about safety, don’t hesitate to reach out to the professionals from Welzig Heating and Air. Our experience and expertise make for a smooth, successful, and guaranteed satisfying service.

Gas Line Services

Family-owned and operated, we don’t believe in cutting corners. At Welzig Heating and Air, we pursue the most effective, advantageous, and sustainable outcome to maximize long-term value and benefits. By following the proper steps, never compromising on the quality of materials, and being straightforward with our recommendations, we simplify even the most complicated projects.

Welzig Heating and Air is Your Partner for Gas Lines

Welzig Heating and Air is prepared and proficient in residential and commercial gas lines. We’ve amassed the specialized tools, knowledge, and in-field insight to provide accurate assessment, helpful recommendations, and exceptional results. Rest assured, we respect your property, time, and budget. Whether you have questions or are ready to move forward, call us at (720) 336-3777 and get the skilled assistance you need to make smart decisions and accomplish your objectives. We’re available across Boulder, Longmont, Louisville, and Lafayette, CO.

Satisfied Customers
They Speak For Us

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!


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.


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.

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