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Our Vision

We strive to be the distributor of choice for quality HVACR equipment, supplies, expertise and service.

Our mission is to partner with our customers for mutual growth and profitability by providing innovative solutions, quality equipment, and exceptional service. TSI’s employee owners are dedicated and trained professionals, conducting business with integrity.

About Temperature Systems, Inc.

Started in 1947 Temperature Systems has evolved into one of the largest HVAC/R distribution companies in Wisconsin.  Our service area covers northern Illinois, eastern Iowa, and the U.P. of Michigan maintaining distribution centers in Madison and Green Bay to serve HVAC/R contractors and dealers.  From these distribution centers we provide delivery of product and supplies, along with providing an array of other services including training, business consulting, system design, and technical support.

At Temperature Systems our greatest asset is our well trained and talented employees who are also owners of the company through an E.S.O.P.  Over 100 employees in Green Bay and Madison represent hundreds of years of experience in the HVAC industry. 



  • 161,000 Square Feet
  • Over 210 Product Lines
  • Over 12,000 SKUs in stock
  • Two Convenient Pick-up Locations
  • After-Hours Emergency Service
  • Next Day Delivery
  • Customer Support Center
  • Nationally Recognized Service Technicians
  • Nationally Recognized Controls Specialists
  • Hydronics Department
  • Refrigeration Department
  • Warranty Department
  • Training Center
  • Our Company

    TSI is an ESOP (Employee Stock Ownership Plan) company. Today, we run two full service distribution centers in Madison and Green Bay. With over 100 employee owners to serve you, TSI can provide the design, products and services to meet your needs and make your project a success.

    Fast efficient counter service, knowledgeable technical support, modern training and lab facilities, specialists in HydronicsControls, and Refrigeration, are all standard at TSI as part of our full service offering at each location. We also offer competitive pricing, so call TSI for your next quote on equipment or supplies. We’re here to help you be successful.

    Our History

    1947 - Began as Wisconsin Furnace Company. The owners sold Armstrong Furnaces to the Madison area.

    1966 - Wisconsin Furnace Company bought out Kerscher Metal Service (which dated back to 1899) in Green Bay, WI.

    1967 - Wisconsin Furnace Company changed their name to Temperature Systems, Inc to better reflect the product mix. Kerscher Metal Service kept their name at this time.

    1975 - Obtained the Carrier Franchise

    1985 - Obtained the Bryant Franchise. Whirlpool, which TSI was currently selling, changed their name to Tempstar.

    1988 - Kerscher Metal Service also became known as Temperature Systems, Inc. TSI essentially became one company with two operating locations.

    2012 - TSI Celebrated 65 years of service!

    Employee Owned

    We are a 100% Employee Owned Company! Through the ESOP process, every employee has indirect ownership at Temperature Systems. Ownership relates to a mindset and a desire to provide the highest level of customer satisfaction possible. We do our best to meet our customers’ needs quickly and accurately the first time.

    We offer an outstanding retirement, health, dental and life insurance package as well as short and long term disability benefits, vacation, sick, holiday and personal time off.


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    Copyright © 2015 Temperature Systems Inc.