Rheem-Ruud’s SPIDERfire condensing-type commercial water heaters offer thermal efficiencies from 92 to 95 percent. The result is a higher recovery rate, particularly during periods of heavy usage. The SPIDERfire is engineered to deliver substantial amounts of hot water to meet the needs of larger commercial applications. The most powerful unit in the series, with an input of 350,000 Btu per hour, can deliver 460 gallons of water per hour at a 100-degree rise. Lower-input models between 130,000 and 300,000 Btu/hour are also available.

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