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Westenn Mechanical Contractors, Inc. is the foremost provider of heating, ventilation and air conditioning installation and service to residential and commercial markets in Walworth County and surrounding areas. We distinguish ourselves by delivering unmatched, state-of-the-art service and value to our customers.


For over 40 years, Walworth County residents have trusted Westenn to provide dependable value for their families. Count on the professionals who've stood behind their work for generations.

Westenn is your best value for commercial and industrial HVAC. Not all mechanical contractors are the same. Be sure yours provides an optimally designed, code compliant system that's properly installed using quality equipment backed by superior service. Our factory-trained technicians are federal and state certified. Westenn is a leading provider to customers throughout Southeastern Wisconsin and Northern Illinois.

Westenn is renowned for its quality technicians who have all undergone, and continue to receive the most up-to-date product and installation training. In 1991, the company expanded into a new facility at 990 Koopman Lane in the Elkhorn Industrial Park. The new facility offers outstanding efficiency in field and shop operations and is consistent with the professional standards of our company. Westenn Mechanical Contractors, Inc. is a good corporate citizen to the community, to the environment, and to the education of our youth. The most important goal of our company is to maintain satisfied customers who are not only pleased with the work we have done, but insist on calling us for any additional projects they may have. Westenn employees are carefully screened and constantly encouraged to be the very best that they can, so that they may advance with a company that is committed to growth.

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Westenn Mechanical Contractors, Inc.
990 Koopman Lane • Elkhorn, WI 53121
(262) 723-4955 – Elkhorn
(262) 248-4922 – Lake Geneva
(262) 728-3272 – Delavan
Fax: (262) 723-4957 • E-mail: westenn@idcnet.com

©2015 Westenn Mechanical Contractors, Inc.