The AMP Condensing Boiler Series (AMP) from Thermal Solutions delivers efficiency with unprecedented space saving innovation in a service friendly design. Available in 400, 500, 650, 800, and 1000 MBH input levels, all models are 97% 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.