The Eccotemp 7.0 GPM Outdoor Liquid Propane Tankless Water Heater is the largest capacity model in the Builder Series. ETL approved and rated at an impressive 7 GPM with a temperature rise of 45°. This tankless water heater is rated at 180,000 BTU and can produce unlimited hot water for 4-5 applications simultaneously. We recommend the 7.0 GPM Outdoor Liquid Propane Tankless Water Heater for large, medium, small size single family homes, townhomes, condos, cabins, as well as smaller commercial applications and home builders. With our upgraded product control board performance and an all-new gas modulating valve, consumers can experience best in class temperature performance that is budget friendly. The space saving wall mounted Eccotemp 7GB-LP has a 110/120-Volt UL Listed power cord that powers the internal exhaust fan, anti-Freeze protection and product control board. The Eccotemp 7GB-LP has been ETL tested and approved for US and Canadian use at elevations up to 2000 ft. Installation and use of the Eccotemp 7GB-LP above 2000 ft. may affect overall product efficiency and performance.