Do Outdoor Tankless Water Heaters Need Venting?

Do Outdoor Tankless Water Heaters Need Venting? Tankless hot water heaters require special venting to blow hot exhaust gas outside, where it dissipates. Unlike traditional tank-style water heaters, gas tankless hot water heaters offer far more versatile venting options. Can tankless water heater be outside? Yes – there are outdoor tankless water heater units that