Intellihot’s iQ1501 Gen II is an indoor/outdoor commercial tankless is rated at 1.501 million Btu/hr., and a single unit can deliver more than 2,420 gph. Capacities as high as 15 million Btu/hr., or larger can be achieved by cascading multiple units without staging valves or master controllers. Patented Masterless controls and modularity ensure high reliability. At 680 lb. and 30” wide, the unit can be maneuvered and fit into tight spaces. It operates on gas pressures as low as 2.5” WC without loss of capacity. It is backed by an industry-best 10-year non-prorated warranty.