Finalist in Plumbing and Water Management in Consulting-Specifying Engineer's 2011 Product of the Year competition
The Rheem-Ruud Spiderfire line of condensing-type commercial water heaters offers a wide range of Btu inputs with thermal efficiencies from 92% to 95%. The 350,000-Btu-input unit can deliver 460 gal of water/hr at a 100 F rise. All models are equipped with a 100-gal storage tank and can operate on either natural gas or liquid propane. They can be installed as a single-pipe, power-vented product, or as a two-pipe, power direct-vented product if negative air pressure or indoor air quality is a concern. The tubes inside the heater’s flue system are coated with porcelain enamel to resist corrosion.