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Professional Heat Pumps & Dual Fuel in Louisville, CO

Since 1994, Welzig Heating and Air has been a leading provider of heating and cooling solutions for homes in Louisville, Colorado, and the surrounding areas. One of our specialties is the installation and upkeep of heat pumps and dual fuel systems. These systems are incredibly efficient and are becoming increasingly popular among homeowners looking for a reliable and cost-effective way to keep their homes comfortable all year long.

Heat pumps are remarkable because they provide both heating and cooling capabilities. They use electricity to move heat from a cool space to a warm space, making the cool space cooler and the warm space warmer. During the summer months, heat pumps will move heat from your cool house into the warm outdoors, effectively cooling your home. In the winter, they do the inverse, extracting heat energy from the exterior air and using it to warm your home.

Dual fuel systems combine the strengths of heat pump technology with traditional gas furnaces to create an optimized heating solution. This is particularly useful in places like Louisville, where temperatures can vary widely between seasons. The heat pump will effectively cool your home in the summer and even provide warmth in moderate winter conditions. However, when temperatures drop significantly, the gas furnace component will kick in, ensuring your home stays warm no matter how cold it gets outside.

Expert Heat Pumps & Dual Fuel Services at Welzig Heating and Air

Customers choose Welzig Heating and Air not just for our technical expertise, but also for our unwavering dedication to customer service. Our business philosophy is centered on honesty and integrity. We strive to provide superior customer service at every interaction, ensuring that every customer feels valued and taken care of.

We also uphold a respectful, positive, and encouraging work atmosphere, understanding that our team is the backbone of our business. We invest in training that promotes exceptional team member growth and success, so you can trust that the technician working on your HVAC system is knowledgeable, skilled, and enthusiastic about helping you.

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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