roughly 2 times bigger. costa rica: 51,000 square kilometers. kentucky: 104,000 square kilometers. roughly 2 times bigger. costa rica: 51,000 square kilometers.
Whole house water heaters are installed in a single location and supply the hot water for all fixtures and appliances in the home. Both tankless and tank-type water heaters can serve as whole-house systems, costing an average of $679 to install.
The Department of Energy recommends having your tank-based hot water heater set to 120 degrees Fahrenheit for most people, but if youâve never adjusted the temperature on your hot water heater, itâs probably set to 140 degrees, which is the default setting from most manufacturers.nnual energy costs for a hot water heater vary from $100 to $200, so this simple change could save you anywhere from $6 to $20 per year. It also keeps you from getting scalded if you accidentally turn up the hot water too much.