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Boulder’s Trusted HVAC Professionals

If you’re not 100% satisfied with the performance of your heat pump, schedule a comprehensive inspection from Welzig Heating and Air. Our NATE-certified professionals provide skilled repairs of all makes, models and styles of heat pumps, from ductless to air-source options. We combine a depth of hands-on experience with smart software to accurately diagnose operations, pinpoint problems and verify a successful outcome.

Schedule Heat Pump Repair from Welzig Heating and Air

Heat pumps are a complex piece of equipment. Not all HVAC contractors are qualified to service them. Welzig Heating and Air has earned status as a Bryant Factory Authorized Dealer by way of strenuous training requirements, technician expertise and a thorough understanding of the products we install, maintain and repair. There is no doubt of our ability to earn your satisfaction. Simply call us at (720) 336-3777 for a job done right.

The weather extremes in Boulder, Colorado, keep the heat pump running just about non stop, all year round. We highly recommend twice-per-year tune-ups to prevent the consequences of wear and tear. Family owned and operated, we’ve been achieving trusted solutions to comfort since 1994. Choose us for heat pump repair no matter the extent of the difficulty or time of day or night. We remain available for emergency needs 24/7.

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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