Hot Water on Demand: Powerful 36kW heating system provides endless hot water with automatic water flow sensors. Ideal for entire home to receive instant and continuous hot water in seconds. Self-modulating unit allows you to set and maintain desired temperature in increments of 1°F. Easy-to-use and read digital temperature display. Multi-Use Application: For commercial or residential use. Hot water tank designed for entire home in warm to hot climates. Ideal for showers, sinks, bathrooms, washing machines and kitchens. Save Space & Money: Wall-mounting design allows you to install virtually anywhere - in a cabinet, closet, garage, basement. Save space with compact unit size. No bulky hot water tank needed; Save up to 50% on heating costs as water only heats when you need it. Reliable & Durable: Extensive warranty of 7-year leakage-free coverage, 5-year heat exchanger, 2-year parts; Durable stainless steel, non-corrosive internal canisters and piping provide increased heating efficiency and life expectancy. Lead-free. Easy Installation: Requires 4 x 40 amp single-phase double-pole breakers, 4 x 8/2 AWG wire size and 240V; Standard 3/4 in. NPT (straight thread) fittings. Unit does not require gas lines or venting.