These Max-E-Therm Heaters uses a specially made Cupra Nickel exchanger, and work very well within Koi ponds. This unique design prevents rusted burners, as found in some types of heaters. Easy to install -- simply hook up your gas line and plug it in! Digital readout of pond temperature and set temperature 2" union inlet fitting at top, and 2" union outlet fitting at bottom Energy-efficient, with an 84% efficient rating Environmentally Friendly - All units are low NOx Rustproof Housing Sleek, matte black enclosure is made of Dura-Glas - an exclusive Sta-Rite material that handles the heat and weathers the elements Lower Operating Costs - 84% efficiency rating - rated 1st in its class for highest energy efficiency Custom or Retrofit - Direct-connects to Sta-Rite System:3® Mod Media filter or easily fits other systems Please note: These are a special order item and not a stock item like most of our products. Documentation Sta-Rite Max-E Therm Gas Koi Pond Heaters — Installation Guide (PDF) Sta-Rite Max-E Therm Gas Koi Pond Heaters — Spec Sheet (PDF)
