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AC Maintenance in Boulder

Is your air conditioner performing like brand new? Are you totally satisfied with the level of comfort, air quality and operational sounds? Has your electric bill steadily increased? Have you faced minor repairs? Solve and prevent complaints with your cooling system by scheduling maintenance with Welzig Heating and Air. Family owned and operated, we provide home and business owners in Boulder, Colorado better solutions.

Our team of NATE-certified professionals are proficient in all makes, models and ages of central air conditioners. Proof of service fulfills the requirements of the manufacturer’s warranty. We are a Google Guaranteed Service Provider and BBB Accredited Business. By participating in ongoing training, following exacting service protocols and demonstrating expertise and excellence, our team qualifies us as a Bryant Factory Authorized Dealer. We’ve further been singled out with the Bryant Circle of Champion Award three years in row.

Contact Welzig Heating and Air for Prompt Service

Like any hard-working and complex piece of machinery, the air conditioner requires annual tune-ups to live up to demands year after year. Scheduling with Welzig Heating and Air provides comprehensive performance evaluation, thorough cleaning, meticulous adjustment, extensive troubleshooting and all of the necessary tasks that extend system life. We promote superior reliability, comfort and air quality. You can expect lower running costs. Be happy with your AC by calling Welzig Heating and Air at (720) 336-3777.

Satisfied Customers
They Speak For Us

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.


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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