Distributor members from the Recreational Vehicle Aftermarket Association (RVAA) rated Thetford Corp. and Norcold Inc. as the highest performing Tier-1 supplier for 2010.

The award is based on how RVAA distributor members rated performance in 14 categories, including marketing, philosophy, delivery, product warranty and customer service, according to a news release.

“On behalf of all the associates of Thetford and Norcold, we would like to express our pride in being recognized as the top-performing Tier-1 supplier,” said Kevin Philips, Thetford vice president of sales and marketing. “We are honored to be recognized for our best-in-class performance as a leading supplier to the RV industry.”

Headquartered in Ann Arbor, Mich., Thetford Corp. is the world’s leading supplier of sanitation and refrigeration products for the recreational vehicle, marine and heavy-duty truck industries.

Thetford subsidiaries include Norcold, America’s leading manufacturer of gas-absorption refrigerators and freezers for the RV, marine and truck markets; Tecma, a producer of fine-china toilets and powerful waste-transfer systems based in Italy; and Spinflo, a unit in England that manufactures high-quality cooking and heating appliances as well as accessories.