Whisper-Quiet and PIEK-Certified Multi-Temperature SLXe Spectrum Unit Delivers Peak Performance

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Whisper-Quiet and PIEK-Certified Multi-Temperature SLXe Spectrum Unit Delivers Peak Performance

Whisper-Quiet and PIEK-Certified Multi-Temperature SLXe Spectrum Unit Delivers Peak Performance
June 16
18:13 2014

Brussels, Belgium, June 17, 2014 – Debates are taking place in Europe to shift urban deliveries outside of peak traffic hours in order to relieve congestion and improve road safety. This shift in schedule will require whisper-quiet delivery capabilities and multiple distribution companies today are looking for efficient solutions to limit the noise levels of their fleets.

 Thermo King, a manufacturer of transport temperature control solutions for a variety of mobile applications and a brand of Ingersoll Rand, leads the way by offering the only PIEK[1]-certified multi-temperature monobloc trailer refrigeration unit currently available on the market – the whisper-quiet SLXe Spectrum Whisper Pro™.

The PIEK-certified low-noise and multi-temperature capabilities of the SLXe Spectrum Whisper Pro offer transport companies full flexibility in transportation and the ability to operate outside peak traffic hours. This not only enhances the time and cost effectiveness of each delivery, but increases the fuel efficiency and sustainability of the delivery operations.

The PIEK-certified SLXe Spectrum Whisper Pro provides precise multi-temperature delivery conditions to ensure product freshness and maintain shelf life for deliveries. The refrigeration units allow controlled temperature settings for two- and three-compartment configurations to suit a fleet’s particular needs with silence and flexibility.

“Multi-temperature trailer units offer flexibility, efficiency and optimize fleet utilization by allowing a variety of products to be stored at different temperatures within the same vehicle,” said Michel Poinsignon, product leader for trailer and rail refrigeration and heating for Thermo King in Europe, Middle East and Africa.

“Supermarkets, distribution centers and the food-service industry benefit from the capability of delivering fresh, chilled and frozen products in a single trailer. They can now all get the benefits of multi-temperature delivery in whisper-quiet packaging.”


The SLXe Spectrum Whisper Pro complies with the most stringent and most recent PIEK requirements by using patented geo-fencing controllers to automatically switch into low-noise mode when entering a controlled zone. The absence of manual intervention meets the very latest PIEK requirement allowing users to operate unrestricted schedules, no matter where their route takes them.

The SLXe Spectrum Whisper Pro complies with the most stringent and most recent PIEK requirements

To be PIEK-certified, the unit’s sound level needs to measure 60dB or less at a 7-meter radius. A specially designed acoustic package reduces the creation of sound energy and contains it at the source. Strategically located noise-absorbent materials and a redesigned engine compartment reduce noise transmission. Even the exhaust system of the SLXe Spectrum Whisper Pro has been specially tuned to minimize sound generation at low engine speeds.

The SLXe Spectrum Whisper Pro provides the operator with compliance and flexibility while having all the advantages of a one-piece, autonomous unit. Easy to install, the unit requires no additional piping and leaves space under the trailer for additional accessories like pallet boxes.

The SLXe Spectrum Whisper Pro unit realizes all the strengths of the Thermo King SLXe trailer range including ease of service, commonality of components, and the expert 24/7 support of the Thermo King Dealer network, all contributing to the unit’s high resale value and lower cost of total ownership. All of these advantages make the SLXe Spectrum Whisper Pro a highly viable investment for distribution companies.

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