The Munchkin Contender Gas Boiler is a Modulating Condensing Wall Hung Boiler made by Heat Transfer Products Inc. and comes in 4 models that offer a modulation input range of 18,000 to 120,000 BTU/HR with efficiencies of 92 – 93% AFUE. The ultra high efficiency of the Munchkin Contender makes it Energy Star Rated and […]