A water heater installation invoice is a document issued to clients up on the installing of a residential or industrial hot water heater. The shape can be employed for collecting payment for work performed in a hourly basis ($/hr) or for an individual (1) period fee.
An hot water heater is also a appliance which uses combustion or electricity to heat water to use in cooking, cleaning, showering, and much more. They`re observed in both industrial structures and homes/apartments.
There are several diverse layouts of heaters, with all the tankless heater being a popular option today.