Rinnai, the number-one selling brand of tankless water heaters in the U.S. and Canada, has already served as a primary or associate partner on Whitt's No. 35 for six races in the 2015 season, including at the Peachtree City, Ga.-based company's home track of Atlanta Motor Speedway.
"Rinnai has been a great partner and they're really taking advantage of the opportunities that NASCAR can offer," Whitt said. "They've made new relationships since joining the sport and have grown their business as a result. I'm proud of that and I hope to see it keep going in that direction."
"We've really enjoyed working with Rinnai," said team owner Bob Jenkins. "Their partnership with us as a race team has grown, and they've also made new relationships with other business partners of ours looking to take advantage of the efficiencies that Rinnai products can provide. We look forward to having them at the racetrack with us for four more races this year."