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2. Low-cost ways to make your home more energy-efficient - AOL

   www.aol.com/finance/low-cost-ways-home-more...

   Faucet mount filtration systems offer a more budget friendly approach and can cost as little as $20. 3. Steel door. A steel door can help you save on heating and cooling costs. Actually made of a ...

3. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   A hybrid water heater is a water heating system that integrates technology traits from both the tank-type water heaters and the tankless water heaters. [5] It maintains water pressure and consistent supply of hot water across multiple hot water applications, and like its tankless cousins, it is efficient and can supply a continuous flow of hot ...

4. EPA WaterSense - Wikipedia

   en.wikipedia.org/wiki/EPA_WaterSense

   Using the efficiency standards established by EPACT92 as a baseline, the EPA instituted the following flow-rate guidelines for WaterSense: toilets must be manufactured with a maximum flush volume of 1.28 gpf; showerheads must have a maximum flow-rate of 2.0 gpm at 80 psi; and bathroom faucets must be manufactured with a low-flow volume rate of ...

5. Low-flow fixtures - Wikipedia

   en.wikipedia.org/wiki/Low-flow_fixtures

   Faucets that meet energy efficiency standards for WaterSense mustn’t use more than 1.5 gpm, a 32% decrease in flow rate over the federal requirement. [10] Reduced flow faucets often make use of flow restrictors or faucet aerators to reduce the flowrate of the water. Using a faucet with an aerator results in an average 42% reduction in water ...

6. Water efficiency - Wikipedia

   en.wikipedia.org/wiki/Water_efficiency

   The program is a voluntary program to encourage water efficiency in the United States by identifying and testing products that demonstrate improvement over standard models for toilets, bathroom faucets and faucet accessories, urinals, and residential shower heads through the use of the WaterSense label.

7. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   District heating systems supply energy for water heating and space heating from combined heat and power (CHP) plants such as incinerators, central heat pumps, waste heat from industries, geothermal heating, and central solar heating. Actual heating of tap water is performed in heat exchangers at the consumers' premises.