Challenge Third party witnessed testing was required for Thermal Solutions Products to obtain efficiency certification for its Solaris and Evolution model boilers and water heaters. The testing parameters specified that a narrow range of water temperatures be maintained during the evaluation and that the equipment received return-water temperatures less than 80°F, or at about 70°F, depending on the type of efficiency test being performed. Challenged at times in the past with using its equipment to maintain consistent water temperatures, as well as with producing the necessary cooling during the summer months, Thermal Solutions sought a rental chiller that would meet the certification specifications. A five-month search for a rental equipment provider had left the company frustrated. A few

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