Keizer Refrigeration, Inc. and Transport Refrigeration of South Dakota, Inc. - Your trusted dealers of Carrier Transicold refrigeration units and APU’s

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  X4 7500 Trailer Refrigeration Unit

  • The X4™ Series. Renowned for its high capacity, efficiency and dependable performance.
  • Ultra-high capacity. Delivers our highest capacity along with fast pulldown, precise temperature control and peace of mind for the most demanding applications.
  • High efficiency. EcoFORWARD™ technologies deliver significant fuel savings as well as higher performance, lower operating costs and compliance with EPA Tier 4 emissions regulations.
  • Proven reliability and lower cost of ownership. Combining innovative engineering with a straightforward, practical design means reduced engine run hours and lower maintenance costs.
  • APX™ control system. Remarkable control intelligence for precise temperature management and amazingly simple operation.
  • More sustainable refrigerant. Sustainability enhanced through use of R-452A, a refrigerant with lower global warming potential.
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  ComfortPro® Diesel APU

  • ComfortPro® diesel auxiliary power units (APUs) from Carrier Transicold are the trucking industry’s all-around performance leaders. No other APU offers the combination of air conditioning, heating, cab power, engine warming, truck battery charging, optional shore power connectivity and a 2,000-hour maintenance service interval found in the ComfortPro diesel units.

  • Easy Maintenance: Enhanced drive system and 2,000-hour maintenance interval
  • Regulatory Compliance: Minimizes the risk of costly fines associated with anti-idling regulations and simplifies compliance.
  • Driver Retention: Creates a more pleasant work experience for drivers while keeping costs down.
  • Fuel Savings: Save nearly a gallon of fuel per hour, compared to idling the truck engine
  • Reduced Tractor Idling: Extends service intervals while also reducing wear and tear on the engine
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  *Custom units available - Call Kolby today!

“It’s All About The People”

Keizer Refrigeration and Transport Refrigeration were founded by Jim and Jackie Keizer, industry leaders and 35 year veterans of the trucking industry, who also acquired Mid-States Utility Trailer Sales in 2001. The legacy of Jim and Jackie lasts through the next Keizer generation, with our current owners Shane Keizer and his wife Shawnie, who continue to grow our Keizer companies through innovation, investment in the training of our staff, and building strong relationships with our customers. Shane and Shawnie have seen our industry change since the early days but our motto ‘It’s All About The People” is as true today at our companies as it was when our founders Jim and Jackie started the business in the 1970’s. Our original values and philosophy remain as strong as ever:

• Do what is right for our customers, with honesty being an essential part of our business

• Do our best for our customers, resolve their issues quickly and seamlessly and build lasting relationships

• Treat our customers with honesty and respect at all times, the way we want to be treated

• Deliver value as a dealer, parts as well as a service supplier

Award-winning Family Dealership

In March 2022, Transport Refrigeration of South Dakota was awarded the Carrier Transicold 2021 North American “Dealer of the Year” award. The legacy of personal service excellence continues with today’s team at Keizer companies and contributed to this prestigious recognition.

Contact Us

If you're looking for new state-of-the-art equipment, peak performance from your existing equipment or increased operating efficiency, get in touch. We look forward to serving you!