Takagi T-K3 - Takagi's smallest, most versatile and most powerful residential model. Connect up to four units to meet the demands of even the largest homes! The compact T-K3 measures under 14 inches wide, so it will fit snuggly between two wall studs to save space. But the T-K3 is also powerful. With Takagi's new easy link technology, the T-K3 will meet the hot-water needs of most high volume residential applications. • Features: • Sealed Combustion Direct Vent. • No Make Up Air Problems. • No Negative Pressure Problems. • Two Pipe Vent System. • Indoor Environment.• The Takagi T-K3 tankless water heater enhances energy conservation methods in residential and commercial installations and improves the internal environment quality in your living area with a direct vent system that prevents negative pressure. • Endless Hot Water.• The Flash T-K3 tankless hot water heater delivers over 250 gallons* of hot water every hour on demand! Tankless systems guarantee that an endless supply of hot water is available to residences, commercial spaces or anywhere a constant source of hot water is needed. • Tiny System with Giant Benefits.• The tiny wonder can also be used as a space heating system. • Environmental Advantages.• Flash T-K3 is far more fuel-efficient that traditional systems, with considerably lower carbon monoxide and NOX (nitrous oxides) emissions. It is quieter, safer and more effective than any other tankless water heater on the market. • Save Money.• Unlike traditional water heating systems, the Flash T-K3 does not waste gas ... or money! With computer-controlled electronic ignition, the pilot light is eliminated. With computer-modulated gas valves, water is heated once, rapidly, efficiently, and only as needed.