A History of Innovations

Entrepreneurial Beginnings


Jerry Maahs enters the foodservice industry as one of the first Chicken Delight chain franchise units. Expanding to 13 units that provided home delivery, Maahs, a true pioneer, sought out a solution to keep food hot, especially during Wisconsin winters. 

Jerry Maahs next to combi ovens

Halo Heat® Technology


Experimenting with thermal heat, Jerry wraps cables around insulated containers, resulting in the invention of Halo Heat holding cabinets. Halo Heat makes its debut at the National Restaurant Association (NRA) show. 

Halo heat technology rendering in a Cook & Hold oven

The Original Cook & Hold Oven


Responding to a customer’s need, Alto-Shaam experiments with low temperature, overnight cooking and holding of prime rib. A new category of commercial kitchen equipment is invented: Cook & Hold ovens with exclusive Halo Heat® technology. 

Cook & Hold with Halo Heat cables

Alto-Shaam Introduces the Combitherm®


Seeing a growing need for modern kitchens to become more versatile and efficient, Alto-Shaam is one of the first to manufacture combi ovens in the U.S. and introduces the groundbreaking Combitherm Oven. Buffet tables and heated display casings were also introduced. 

Jerry Maahs smiling and crossing his arms

Fulfilling Global Needs


Alto-Shaam doubled the size of headquarters in Menomonee Falls, as well as expanded to serve customers in France and Canada. Alto-Shaam performed its first cruise line installation and its first installation in Antarctica. 

World map

A Legacy of Pioneers


Steve Maahs, Jerry’s son, is named president and COO and Karen Hansen, Jerry’s daughter, becomes CEO. Alto-Shaam becomes one of the first foodservice manufacturers to focus on sustainability. 

Steve and Karen Maahs

Investing in Quickchill & Rotisserie Technologies


Quickchiller™ and Rotisserie categories are introduced. 

Rotisserie and Quickchiller technology graphic

State-of-the-Art Combitouch® Control


Alto-Shaam unveils its new CombiTouch control for the Combitherm® oven and wins the KI Award. 

Combination oven

Inventing another cooking category


Recognizing the potential of Structured Air Technology®, Alto-Shaam partners with Phil Mckee, founder and CEO of Appliance Innovation. The Vector Multi-Cook Oven line was created, which revolutionized the cooking industry. The Vector Multi-Cook Oven received a Kitchen Innovations 2017 Award, which recognizes the biggest advancements of the year in the foodservice industry. 

Structured air technology rendered graphic
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