The AMP Condensing Water Heater Series (AMPW) from Thermal Solutions delivers efficiency with unprecedented space saving innovation in a service friendly design. Available in 1000, 1250, 1500, 2000, 2500, 3000, 3500 and 4000 MBH input levels, all models are 98% Thermal Efficient. The 316L stainless steel heat exchanger features cavernous internal circuits with commercially sized tubes that minimize pressure drop and proactively reduce pump in sizing, saving on install and electrical operations.