Large water heaters are unsightly appliances that home-sellers would rather hide. Although it's not always possible to banish these structures, it is possible to replace them with a version that is not as overbearing. Tankless water heaters have the potential to make one home stand out amongst the competition, but they do have some disadvantages along with the benefits. Pro: Tankless Water Heaters Use Less Energy Traditional water heaters continuously heat water that is just sitting in the tank, and this requires energy. Tankless water heaters, on the other hand, do not heat the water until someone needs it. Therefore,…