Efficient Technology Sales, LLC based in Denver, CO represents WaiWela Quality Water Heaters in the USA and Canada. WaiWela is pronounced ‘ViVela’, meaning hot water in Hawaiian. Company founders began selling Paloma tankless gas water heaters and accessories in 1977. In 2005, WaiWela introduced a complete line of 110v mini tank water heaters, one of the first to market in North America.