Cost Replace Water Heater

water heater
a heater and storage tank to supply heated water
An appliance for supplying hot water for purposes other than space heating or pool heating.
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.

replace
supplant: take the place or move into the position of; "Smith replaced Miller as CEO after Miller left"; "the computer has supplanted the slide rule"; "Mary replaced Susan as the team's captain and the highest-ranked player in the school"
Take the place of
Provide or find a substitute for (something that is broken, old, or inoperative)
substitute a person or thing for (another that is broken or inefficient or lost or no longer working or yielding what is expected); "He replaced the old razor blade"; "We need to replace the secretary that left a month ago"; "the insurance will replace the lost income"; "This antique vase can
Fill the role of (someone or something) with a substitute
put something back where it belongs; "replace the book on the shelf after you have finished reading it"; "please put the clean dishes back in the cabinet when you have washed them"

cost
Cause the loss of
be priced at; "These shoes cost $100"
the total spent for goods or services including money and time and labor
Involve (someone) in (an effort or unpleasant action)
(of an object or an action) Require the payment of (a specified sum of money) before it can be acquired or done
monetary value: the property of having material worth (often indicated by the amount of money something would bring if sold); "the fluctuating monetary value of gold and silver"; "he puts a high price on his services"; "he couldn't calculate the cost of the collection"