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2. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   Tankless water heaters provide many advantages: [8] Long term energy savings: Though a tankless water heater typically costs more initially, it usually costs less to operate because of lower energy use—since it only heats water when required instead of continuously maintaining a tank of heated water. Even homes or buildings with high demand ...

3. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   The main disadvantage is their much higher initial costs; a US study in Minnesota reported a 20- to 40-year payback for the tankless water heaters. [citation needed] In a comparison to a less efficient natural gas fired hot water tank, on-demand natural gas will cost 30% more over its useful life. [dubious – discuss] [citation needed]

4. Cost of electricity by source - Wikipedia

   en.wikipedia.org/wiki/Cost_of_electricity_by_source

   The levelized cost of electricity (LCOE) is a metric that attempts to compare the costs of different methods of electricity generation consistently. Though LCOE is often presented as the minimum constant price at which electricity must be sold to break even over the lifetime of the project, such a cost analysis requires assumptions about the value of various non-financial costs (environmental ...

5. Water metering - Wikipedia

   en.wikipedia.org/wiki/Water_metering

   The costs of metering include: Investment costs to purchase, install and replace meters, Recurring costs to read meters and issue bills based on consumption instead of bills based on monthly flat fees. While the cost of purchasing residential meters is low, the total life cycle costs of metering are high. For example, retrofitting flats in ...

6. Electric heating - Wikipedia

   en.wikipedia.org/wiki/Electric_heating

   However, because of high capital cost, the cost of electricity has not fallen and is typically 2-3 times that of burning fuel. Hence, direct electric heating may now give a similar carbon footprint to gas- or oil-fired heating, but the cost remains higher, though cheaper off-peak tariffs can reduce this effect.

7. Water dispenser - Wikipedia

   en.wikipedia.org/wiki/Water_dispenser

   To install the bottle, the bottle is tipped upside down and set onto the dispenser; a probe punctures the cap of the bottle and allows the water to flow into the machine's internal reservoir. These gravity-powered systems have a device to dispense water in a controlled manner.