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Full Service Heat Pump Repair in Longmont, CO

Even though heat pumps are designed for long life and sustainability, nothing lasts forever. Regular heat pump repair and service will offset the wear and tear from extended use, and provide enhanced performance and a longer life span. If the system is producing inconsistent heating or cooling, or if you notice higher utility bills or unusual smells, it may be time to call an expert for heat pump repair. For Boulder, Longmont, Louisville, and Lafayette, CO Welzig Heating and Air is the only name that you need to remember for heat pump repair, service, and installation

Since 1994 Welzig Heating and Air has served the city of Boulder, Longmont, Louisville, and Lafayette, CO with a full complement of heating, cooling, and plumbing repairs. We are a family owned and operated business, so we don’t just work here, we live here. We are your neighbors. And we like to make sure that our neighbors have the best possible furnace and heat pump repair. We have cultivated a reputation for top flight service, and work you can rely on.

Your Heat Pump Repair Service Specialists, Welzig Heating and Air

If you need heat pump repair, or simply have questions, please contact Welzig Heating and Air today so one of our certified experts can help you. Although we are BBB accredited and NATE certified, our primary goal is providing the people of Boulder, Longmont, Louisville, and Lafayette, CO with the best possible service. Available 24-7 for emergency repairs.

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!


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.

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