Longmont, CO Expert Furnace Replacement Service

If you have an old furnace that is giving you trouble all of the time, it might be time to consider going for a replacement. If you’re a homeowner with this issue in Longmont, CO, Welzig Heating and Air has extensive experience with furnace replacement and our services are some of the best in the area. Our NATE-certified professionals are ready to help you find the perfect heating system replacement for your specific comfort needs, energy efficiency goals, and budget.

Furnace InstallationFurnace Replacement

As a Bryant Factory Authorized Dealer, we guarantee that we’ll help you find the best heating equipment on the market with a smooth replacement process done right. We understand that choosing to invest in a new furnace is a significant decision, which is why we offer personalized assessments and recommendations to meet the unique needs of every last one of our customers. It all starts with a free consultation with our knowledgeable and highly trained experts. Once you’re set on a certain upgrade, we’ll remove your old furnace and proceed with the replacement. With your new heating equipment installed, we’ll go through the vetting process to ensure your system is working properly without issue.

Your Certified Furnace Replacement Team with Welzig Heating and Air

Even after your new installation, we’re here for you to provide support and maintenance to make sure your investment is protected. Don’t forget to ask about our maintenance plans, so you can extend the life of your furnace and keep it running smoothly. When you’re looking for one of the best furnace replacements on the market, give us a call to schedule a free consultation!

Furnace Installation & Furnace Replacement Boulder, CO, Longmont, CO & Louisville, CO

Furnace Replacement & Furnace Installation

Furnace ReplacementFurnace Installation

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.

Leave Us a Review!
Google Reviews
Angies List Reviews
Yelp Reviews
Facebook Reviews
Contact Us Now For A
Free Estimate

Longmont, CO