SW10DE LP Gas & Electric 10 gal. Direct Spark Ignition Combo Water Heater (16-7/32" x 16-7/32" x 20-1/2") by Suburban®. Take advantage of campground or generator power to heat your water with the 1440W Incoloy electric element. The Incoloy electric element provides a recovery rate of 6.1 gallons per hour. for a Faster RECOVERY rate of 16.2 gallons per hour, use both gas and electric simultaneously. The water heater gas ignition is controlled by a switch mounted on the inside of your RV.