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Furnace Tune-Ups in Boulder

For at least two-thirds of the year in Boulder, Colorado, the furnace is running and experiencing wear and tear. For those few months the system sits idle, it’s possible for dust and other contaminants to accumulate within interior components. The only way to ensure the unit continues to meet demands, live up to expectations and keep you perfectly warm is through regular tune-ups.

Contact Welzig Heating and Air for Timely Service

Welzig Heating and Air provides for furnace maintenance of all makes and models. Our technicians fulfill the exacting criteria of NATE-certification and continue the ongoing education required as a Bryant Factory Authorized Dealer. For our demonstration of excellence, we’ve been singled out with the Bryant Circle of Champion Award three years in row. We take pride in our exemplary standards of workmanship and look forward to delivering unmatched benefits to our customers.

Your furnace definitely requires proof of professional upkeep to fulfill warranty stipulations. This is because essential performance diagnostics, cleaning, adjustment and replacing worn or broken parts supports greater reliability, efficiency, capacity and longevity. When you trust the experts from Welzig Heating and Air with this all-important task, we take the very best care of your comfort, air quality and investment. Family owned and operated since 1994, we’ve built our reputation on outstanding outcomes.

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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