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New Heat Pump Installation Services in Longmont, CO

A heat pump is a revolutionary piece of HVAC equipment that can help regulate the temperature of your home all year around. A heat pump does not generate heat, it moves heat from one place to another, from inside to outside, or vice versa. This gives it the power to heat and cool your home with remarkable precision and power, at a fraction of the cost of a normal heating system. The team at Welzig Heating and Air are heat pump installation experts, and have been helping the homes of Boulder, Longmont, Louisville, and Lafayette, CO stay comfortable since 1994.

Welzig Heating and Air is a family owned and operated business with deep roots in the community. For decades we have served our neighbors in Boulder, Longmont, Louisville, and Lafayette, CO with dependable, efficient work at a reasonable price. When we provide your new heat pump installation, you can be sure that you’re getting exemplary service, top quality components, and a commitment to customer satisfaction. We stand behind our work.

Choose Efficiency with Welzig Heating and Air Heat Pump Installation

If you have questions about your options for heat pump installation, contact us today for more information. We are accredited by the Better Business Bureau, a Google Guaranteed Service Provider, and certified for excellence by NATE. More importantly, at Welzig Heating and Air we have a passion for making our customers happy.

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.


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.

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