Stiebel Eltron has announced that Doug Belden is the company’s western regional sales manager and Glenn Issac is eastern regional sales manager. Belden was formerly with Ferguson Enterprises and has more than 15 years’ experience in the plumbing/HVAC mechanical arena. Isaac was formerly with Bosch as national account manager and eastern regional sales mgr., and has more than 20 years of tankless water heater experience.