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Longmont, CO Certified Tank Water Heater Services

The certified experts at Welzig Heating and Air are uniquely qualified for all your tank water heater services in Boulder, Longmont, Louisville, and Lafayette, CO. Unlike other HVAC companies, our team is also qualified for plumbing work, water tank installation, and water filtration systems. Plumbing and HVAC skills combined make for the most efficient and professional tank water heater services in the region. For new installation, replacement, or repair, we have you covered.

With the right care and maintenance, your water heater can serve your home for 10 to 15 years, if not longer. By using the tank water heater services of Welzig Heating and Air you can get the most out of your investment. Trust the most skilled and experienced water heater professionals in Boulder, Longmont, Louisville, and Lafayette, CO and contact us today to learn more.

Your 24/7 Tank Water Heater Service Made Simple with Welzig Heating and Air

Welzig Heating and Air has been the top name in HVAC and water heater services in Boulder, Longmont, Louisville, and Lafayette, CO since 1994. We are a family run business with deep roots in the local community, who have a commitment to provide the absolute best in customer service and quality HVAC work. We are NATE certified, BBB accredited, and ready to serve all your heating and cooling needs. Our techs are available for emergency tank water heater services 24 hours a day, 7 days a week.

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!


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.

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