About Our Fine Company 

In 1955, Jane Miller began her career with Rockel Sheet Metal. At that time, there were only two other LENNOX dealers in the entire St. Louis area. Five years later, Miller (along with associates Al Kuennen and Don Herkenhoff) acquired the heating and air conditioning department of Rockel, including the LENNOX  dealership. The three of them formed AL-DON Service Inc.

AL-DON immediately set out to become an industry leader, establishing the first Maintenance Agreements in the St. Louis area for HVAC systems. With four annual service dates, the customers of their shop were able to breathe easier knowing a competent organization was taking care of business. The business grew exponentially during its early years, largely due to the strong reputation that followed them from customer to customer.

In 1967, Don Herkenhoff severed his ties with AL-DON, choosing to pursue dissimilar personal interests. This left only two principals, Miller and Kuennen, who became sole and equal partners in the enterprise. Five years later, the outfit moved to Creve Coeur; the business resides there to this day.

In 1977, Jane Miller assumed sole proprietorship of AL-DON Service, Inc. In the following years, the company continued to prosper under her leadership and business savvy; developing strategic alliances with manufacturers and distributors that enabled them to offer services unique to the area. A "Customized" Maintenance Program was introduced that offered a high degree of flexibility in selecting services.

In 1997, AL-DON began offering the computerized diagnostic testing unit called the Infiltrometer (Blower Door). This system allowed customers to view, first-hand, the efficiency level of their Indoor Air System. AL-DON was the pioneer of this technology for the St. Louis area. Also introduced was the HEPA-AIRE 99.97% filtration efficiency Central Air Purification System. Again, AL-DON was trail blazing; being the first dealer in the entire state.

AL-DON has traveled a considerable distance under Jane Miller's watchful eye, and it will continue to grow under the watchful eye of her son, Jeff Miller.  Jeff assumed command in 2007.. The company's newest objective is to redirect its efforts from selling HVAC equipment and service to being a leader in "Whole-House Indoor Air Quality".  Jeff sits on the Board of Directors for the National Air Conditioning Contractors of America and is a founding member of the Indoor Air Quality Network.  It is the desire of its officers that AL-DON become a "One-Stop" solution for all your health, comfort and environmental needs.... and if history is cyclical, there is no doubt it will happen.