HVAC sales company Rinnai America is celebrating its 40th anniversary this year.

The maker of tankless water heaters and other HVAC market products was founded in Los Angeles in 1974. It's Japan-based parent company has been in business since 1921.

From an early focus on spa heating and other home HVAC construction products, today the company operates out of Peachtree City, Ga., and offers a diverse green HVAC lineup, officials say.

“We are heating and water-heating pioneers in North America. Engineering superior products is our focus and we continue to deliver on our relentless pursuit of new technologies and the superior quality and reliability our customers have come to expect,” said Rinnai America President Takashi Sonoda. “Forty years ago, we launched Rinnai with the mindset that we could create an exceptional company built on superior technology, integrity and a corporate environment of collaboration and innovation. Rinnai wouldn’t be where it is today with our talented employees, loyal customers, dedicated distribution, and the support of the communities we operate in and we thank each of you for helping us in our first 40 years and our future successes.”