The DynaMax® HS is a gas fired condensing boiler with up to 97% efficiency! Developed for residential and commercial applications, and available in Hydronic Heating, Hot Water Supply and Combination models. Performance Highlights: ◦Up to 97% efficiency ◦Approved plastic venting up to 100 feet ◦Up to 150 PSI Relief Valves ◦Onboard digital operating control ◦Fully modulating with 5:1 turndown ◦Stainless steel heat exchanger ◦Available Natural Gas or LP ◦Thru wall exhaust vent (vertical or horizontal) with 3 air intake options: ◦outside air sealed direct ◦outside air ◦indoor air ◦Extremely low NOx ◦Fail Safe high limit w/Manual reset ◦Flow proving ◦Direct spark ignition ◦Zero clearance to combustibles ◦Boiler Circulating pump ◦Neutralizer Kit ◦Many more standard features ◦Several Optional features available such as Rack kits, and more... Wall Mount - Model numbers: 0080 ( 78 Mbtuh max. output ) 0100 ( 97 Mbtuh max. output ) 0150 ( 146 Mbtuh max. output ) 0200 ( 194 Mbtuh max. output ) 0250 ( 243Mbtuh max. output ) Floor Mount - Model numbers: 0210 ( 194 Mbtuh max. output ) 0260 ( 243 Mbtuh max. output ) 0290 ( 291Mbtuh max. output ) 0390 ( 387Mbtuh max. output ) 0500 ( 485 Mbtuh max. output ) 0600 ( 582 Mbtuh max. output ) 0700 ( 679 Mbtuh max. output ) 0800 ( 776 Mbtuh max. output )