De Dietrich, a leading cast iron boiler manufacturer, has introduced its new line of Euro-design residential boilers. The GT120 gas-or-oil-fired power boiler and the DTG120 gas-fired atmospheric boiler feature resilient cast iron construction, easy cleaning and energy savings of 25% over leading brands. De Dietrich boilers are accompanied by a complete line of compatible hot water tanks. The atmospheric boilers include a forced-flue/sealed combustion version. MACNA-De Dietrich.