Professional Indoor Air Quality Services in Longmont, CO

At Welzig Heating and Air, we understand how important it is to have good air quality in your residence. Poor air quality can lead to discomfort, health issues, and reduced energy efficiency. This is why we have a comprehensive range of indoor air quality services to make sure your home in Longmont, CO has superior air quality. Some of our indoor air quality services include air duct cleaning, air filtration systems, humidifiers, dehumidifiers, UV lights, and carbon monoxide detectors.

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Over the course of time, all types of contaminants such as dust, debris, and other particles can build up in your ductwork, which not only causes poor air quality but makes it harder for your HVAC system to work effectively. With state-of-the-art equipment, we are able to remove buildup and sanitize your ducts, making it so you can breathe clean and fresh air in your living environment. We have a range of air filtration systems that can also help tremendously with poor air quality. From advanced air filters to air purification systems, we can help you remove harmful pollutants and airborne particles from your air. Uncontrolled humidity levels can be a huge issue in your home leading to issues from dry skin to mold growth. We can install humidifiers and dehumidifiers to help maintain the ideal relative humidity levels in your home for optimal safety and health. Our UV lights are ideal for eliminating the threat of harmful pathogens to help protect your family members from coming down with serious illnesses.

Choose Health with Welzig Heating and Air Indoor Air Quality Services

We are fully committed to ensuring that you are safe, healthy, and comfortable in your home. When you hire us for our air quality services, we guarantee we will improve your air quality to safe levels. We’ll work carefully with you to determine what is causing indoor pollution in your home, and we’ll utilize the appropriate techniques to improve your air quality significantly. Make sure to give us a call to schedule a free consultation today!

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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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Longmont, CO