One major draw for Tankless Water Heater systems is that they physically save a remarkable amount of space as compared to traditional tank models. A traditional water heater tank holds anywhere from forty to sixty gallons of water and is around 60 inches tall and 24 inches wide – that’s a ton of space required to store an appliance! Tankless Water Heaters on the other hand are typically around 28 inches tall, 20 inches wide, and 10 inches deep, saving you a serious amount of space for storage or other things in your Vancouver, BC basement!