Bosch Thermotechnology’s floor-standing Greenstar gas condensing boiler for residential applications is now available for all eight regular heat (57, 79, 100, 131, 151 mbh inputs) and combiheat plus hot water (100, 131, 151 mbh inputs) models. The boilers are CSA- and ASME-approved, and achieve an Energy Star Most Efficient rating of 95%. All models are equipped with pump, pressure relief valve, minimum gas pressure of 3.5” wc, propane conversion kit, coated heat exchanger, twin pipe flue adaptor, integrated low-loss header and temperature sensor.