Gas Tankless Water Heater Fuel Type - Water Heaters Natural Gas BtuH - Water Heaters 11 000 to 199 900 Ignition Type - Water Heaters Electronic 7.4 GPM @ 45F Rise - Water Heaters Fuel Connection - Water Heaters 3/4 in Water Connection - Water Heaters 3/4 in Energy Factor - Water Heaters 0.94 Tankless Draft Hood Size (In.) 3 Depth (In.) 9 3/4 in Width (In.) 18 1/2 in Height (In.) 27 1/2 in