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Expert Air Conditioning Service in Louisville, CO

One of our top priorities at Welzig Heating and Air is to ensure homeowners and business owners throughout Louisville, CO receive top-of-the-line air conditioning service for a healthy and cool environment. Our team of NATE certified professionals are fully committed to delivering efficient solutions, exceptional customer service, and complete customer satisfaction. Whether you’re in need of a new AC system installation, system replacement, quality repairs, or comprehensive maintenance, we’re fully equipped and ready to serve you!

New Installation Analysis

When you’re in the market for a new AC system installation, our experts will help you find the ideal cooling system and design that will meet your comfort needs and fit within your budget. Our installation service will be carried out with great care and precision, ensuring that you have an efficient and comfortable environment moving forward. If you have a cooling system that is not providing enough cool air, is breaking down all the time, or is making crazy noises, you’ll find that our AC repair services are on point. Our experts utilize the latest diagnostic equipment to pinpoint issues accurately and quickly. Then we’ll provide quality repairs done with quality workmanship, to ensure your AC system runs in optimal condition.

To keep your AC equipment running in peak condition, it’s important to have regular maintenance done. We recommend enrolling into the Welzig Comfort Program which grants you 21-point inspections, thorough system tune-ups, and discounts on needed repairs. Enrolling will prolong the life of your AC equipment, guard against unexpected system failures, and give you access to clean and healthy air in your environment. When you’re looking for the best air conditioning service in Louisville, make sure to contact us as soon as possible for a free consultation or free service quote!

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.


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!


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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