Welzig Heating & Air

Welzig Heating & Air Welzig Heating and Air, your heating and air conditioning specialists, is a locally owned and operated company since 1994. We’re Not Comfortable Until You Are!

We know how to save you money on your heating and air conditioning needs. Hello,

Our names are Jimmy and Jalene Welzig. We are the owners of Welzig Heating and Air. I started our company in 1994, along side my bride Jalene, after working in this industry for many years prior. We are family owned and operated, located in Longmont. We have made Longmont our home since 1974. We have 5 children toget

her, Casey (1988), Cassy (1990), Wyatt (1998), Grace (2001), and Faith (2009). We incorporate trust and our high standards in every aspect of our business. I firmly believe the difference between a good company and a bad company is how they respond to the customer. At Welzig, we have developed a system with a high standard of procedures, extensive training for all our team members, and the latest technology, in order to give you, our valued customer, the highest quality customer service. Our technicians, installers, and office personnel are required to take the latest technical training, classes, and certifications. We have built our own state-of-the-art training center for our technicians and office personnel. In addition to that, Welzig provides and requires NATE certifications and factory training. Every job is unique and personalized, so we build custom fittings for your home right here in our extensive fabrication shop. All employees that show up at your home will be clearly marked in a Welzig Uniform, insured and bonded, and have the correct tools and training to complete the job in a timely and professional manor with the smile you have grown to expect. We strive to provide superior service and solutions. Cooling, heating, and conditioning the air you breathe.

Allergy season is back! Spring brings flowers and flowers brings allergens to your home. Get some extra allergy defense ...
04/17/2026

Allergy season is back! Spring brings flowers and flowers brings allergens to your home. Get some extra allergy defense by replacing your air filters!

The temps keep climbing, but are you sure you're taking full advantage of your fans? Get them right and watch your energ...
04/10/2026

The temps keep climbing, but are you sure you're taking full advantage of your fans? Get them right and watch your energy bills drop!

04/07/2026

Pipes giving you trouble? It might be your water pressure! Call Welzig to find out!

04/04/2026

Love getting five star reviews about our work! When we enter your home, your comfort and peace of mind are our TOP PRIORITY

Ready to save big?! Nope, it's not an April Fools, when you invest in an AC and Furnace combo you get $1,500 off! Call t...
04/01/2026

Ready to save big?! Nope, it's not an April Fools, when you invest in an AC and Furnace combo you get $1,500 off! Call the pros at Welzig for more info when you are ready to save big!

03/03/2026

Ready or not here's your tuesday tip! Time to find out what that funky smell is!

03/02/2026

See why homeowners love ductless—easy installation, year-round comfort, and personalized temperature control for every room. Discover if it’s the right fit for your home.

03/02/2026

Is your furnace showing its age? Learn the signs that it’s time to upgrade and how a new Bryant system can save energy and improve comfort this winter.

03/02/2026

HVAC is a big investment, and you want comfort that stands the test of time. Bryant has earned multiple industry awards for durability, proving our systems are built to perform.

03/02/2026

Comfort doesn’t happen by chance. Simple tune-ups keep your furnace efficient and reliable, so your home stays cozy as the seasons change.

Address

1831 Boston Avenue Unit D
Longmont, CO
80501

Opening Hours

Monday 7:30am - 5pm
Tuesday 7:30am - 5pm
Wednesday 7:30am - 5pm
Thursday 7:30am - 5pm
Friday 7:30am - 5pm
Saturday 8am - 5pm

Telephone

+17206151525

Website

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