I am building a new home aprox 2000 square feet with 2 full bathrooms, Laundry, and a kitchen that will be needing hot water supplied to them i have used a normal 210 hot water heater in the past but have always seen tankless hot water heaters be used on this old house we tend to use a lot of hot water when showering and always run out before we are all done taking showers. Was wondering if a electric tankless hot water heater would be the way to go or if it would be able to keep up never used one or been around them to know how efficient they are. Cost to run compared to a normal hot water heater.