Water Heater Costs

water heater
a heater and storage tank to supply heated water
Water heating is a thermodynamic process using an energy source to heat water above its initial temperature. Typical domestic uses of hot water are for cooking, cleaning, bathing, and space heating. In industry, both hot water and water heated to steam have many uses.
An appliance for supplying hot water for purposes other than space heating or pool heating.

costs
(of an object or an action) Require the payment of (a specified sum of money) before it can be acquired or done
Involve (someone) in (an effort or unpleasant action)
pecuniary reimbursement to the winning party for the expenses of litigation
Cause the loss of
(cost) be priced at; "These shoes cost $100"
(cost) the total spent for goods or services including money and time and labor