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Since 1947...

About Us


When Sigler Heat and Air first opened our doors in Tulsa, Oklahoma in the mid-1930s, we were known as Southwest Weathermakers. Since being purchased by Russ Sigler in 1947, the Tulsa community has known us as Sigler Heat and Air and recognized us for our commitment to service, honesty and integrity.

In 1962, Orval Gilleland purchased the company after many years as the Operations Manager. Since then, Sigler Heat and Air has stayed in the Gilleland family and we’re now in our third generation of management. While the names and faces have changed, we’ve carried on the same values the business was founded with.

We’ve been servicing the air conditioners and heaters of our friends and neighbors for over 70 years now. From that experience, we’ve learned the secret to our success: attention to detail and providing service that gets it right the first time.

We’re proud of the reputation we’ve established through an organization wide commitment to those ideals. We’re also proud to continue to be your choice for HVAC maintenance, repairs and installations.

As the oldest Carrier dealer in Tulsa, with thousands of satisfied customers, Sigler Heat and Air has become established as a recognized and trusted local business. We want to be your first call for both commercial and residential HVAC repairs.

If you haven’t yet experienced the Sigler difference, we’d love the opportunity to show you what heat and air service should be.