Gustavo Burges

The size of your water heater is determined by the number of people in your household and can impact water heater replacement costs. Tank-style water heaters range in size from 20 gallons to over 100 gallons, with a 40-gallon tank being the most common for a two-person household. Homes with more than five people may require a larger tank, such as a 60-gallon or 80-gallon unit. Enjoy the peace of mind that comes with hiring a professional — find a professional installer to handle your hot water h...