Scalding is a serious concern with any water heater. There are no heat losses and cheaper than the storage water heater. Domestic hot water is provided by means of water heater appliances, or through district heating. These include the sale of natural gas, water heater rentals and repair or maintenance services. An oil burner is a part attached to an oil furnace, water heater, or boiler. Another type of water heater developed in Europe predated the storage model. Meanwhile, Wally works with McCord to repair the hot water heater. She later turns the water heater off. Instant water heater provides water as you need. Such features included a generator and water heater. The machine also lacked an internal water heater. Furnaces and the water heater are sometime incorporated to the room as well. Hot water can be taken continuously by a tankless geyser/water heater. Even replacing an existing water heater may require a permit and inspection of the work. For smaller families, a tankless water heater is more suitable.