Energy Cost Calculator for Faucets and Showerheads

Vary utility cost, hours of operation, and /or efficiency level.
INPUT SECTION
Input the following data (if any parameter is missing, calculator will set to the default value).				Defaults
Water Saving Product				Faucet	Showerhead
Flow Rate		gpm		2.2 gpm	2.5 gpm
Water Cost (including waste water charges)		$/1000 gal		$4/1000 gal	$4/1000 gal
Gas Cost		$/therm		0.60 $/therm	0.60 $/therm
Electricity Cost		$/kWh		0.06 $/kWh	0.06 $/kWh
Minutes per Day of Operation		minutes		30 minutes	20 minutes
Days per Year of Operation		days		260 days	365 days
Quantity to be Purchased		unit(s)		1 unit	1 unit

OUTPUT SECTION
Performance per	Your Choice	Base Model	FEMP Recommended Level	Best Available	Self Closing Faucet (gallon per cycle)
WATER USE ONLY
Gallon per Minute	gpm
Annual Water Use	gal
Annual Water Cost	$	$	$	$	$
Lifetime Water Cost	$	$	$	$	$
WITH ELECTRIC WATER HEATING
Annual Energy Use	kWh
Annual Energy Cost	$	$	$	$	$
Lifetime Energy Cost	$	$	$	$	$
Lifetime Energy and Water Cost Savings	$	$	$	$	$
Lifetime Energy and Water Cost Savings for	$	$	$	$	$
WITH GAS WATER HEATING
Annual Energy Use	therms
Annual Energy Cost	$	$	$	$	$
Lifetime Energy Cost	$	$	$	$	$
Lifetime Energy and Water Cost Savings	$	$	$	$	$
Lifetime Energy and Water Cost Savings for	$	$	$	$	$
For electric water heating applications, your selection of an energy saving with a flow rate of gallon(s) per minute will have a combined energy and water cost savings (per ) of $ over an estimated 10 year life expectancy compared to the base model. For gas water heating applications, your selection of an energy saving with a flow rate of gallon(s) per minute will have a combined energy and water cost savings (per ) of $ over an estimated 10 year life expectancy compared to the base model.
Assumptions "Base model" has an efficiency that just meets the national minimum standard for faucets or showerheads. Lifetime energy cost and lifetime water cost is the sum of the discounted value of the annual energy and water costs based on an assumed faucet or showerhead life of 10 years. Future gas and electricity price trends and a discount rate of 3.2% are based on Federal guidelines. $0.06 per kWh is the Federal average electricity price in the U.S. $0.60 per therm is the Federal average gas price in the U.S. The assumed combined water and waste-water price is $4.00/1000 gallons.
Disclaimer This cost calculator is a screening tool that estimates a product's lifetime energy cost savings at various efficiency levels. Maintenance and installation costs do not vary significantly among the same product having different efficiencies; so, these costs are not included in this calculator tool. For a detailed life-cycle cost analysis, FEMP has developed a tool called Building Life-Cycle Cost (BLCC). This downloadable tool allows the user to vary interest rates, installation costs, maintenance costs, salvage values, and life expectancy for a product or an entire energy project.

Water Saving Product Flow Rate in gallons per minute. Default for a faucet is 2.2 gallons per minute. Default for a showerhead is 2.5 gallons per minute. Waster cost including waste water charges in dollars per 1000 gallons. Default for a faucet is 4 dollars per 1000 gallons. Default for a showerhead is 4 dollars per 1000 gallons. Gas cost in dollars per therm. Default for a faucet is 0.60 dollars per therm. Default for a showerhead is 0.60 per therm. Electricity cost in dollars per kilowatt hour. Default for a faucet is 0.06 dollars per kilowatt hour. Default for a showerhead is 0.06 dollars per kilowatt hour. Minutes per day of operation, measured in minutes. Default for a faucet is 30 minutes. Default for a showerhead is 20 minutes. Days per year of operation, measured in days. Default for a faucet is 260 days. Default for a showerhead is 365 days. Quantity to be purchased, measured in units. Default for a faucet is 1 unit. Default for a showerhead is 1 unit. Performance for faucet or showerhead, depending on selection above. Your Choice with Water Use Only Form Labels Gallons per minute based on your choice, for water use only. Annual water use based on your choice, for water use only. Annual water cost based on your choice, for water use only. Lifetime water cost based on your choice, for water use only. Base Model with Water Use Only Form Labels Gallons per minute based on the base model, for water use only. Annual water use based on the base model, for water use only. Annual water cost based on the base model, for water use only. Lifetime water cost based on the base model, for water use only. FEMP Recommended Levels with Water Use Only Form Labels Gallons per minute based on FEMP recommended levels, for water use only. Annual water use based on FEMP recommended levels, for water use only. Annual water cost based on FEMP recommended levels, for water use only. Lifetime water cost based on FEMP recommended levels, for water use only. Best Available with Water Use Only Form Labels Gallons per minute based on best available levels, for water use only. Annual water use based on best available levels, for water use only. Annual water cost based on best available levels, for water use only. Lifetime water cost based on best available levels, for water use only. Self Closing Faucet with Water Use Only Form Labels Gallons per minute based on self closing faucet, measured in gallon per cycle, for water use only. Annual water use based on self closing faucet, measured in gallon per cycle, for water use only. Annual water cost based on self closing faucet, measured in gallon per cycle, for water use only. Lifetime water cost based on self closing faucet, measured in gallon per cycle, for water use only. Your Choice with Electric Water Heating Form Labels Annual energy use, based on your choice and measured in kilowatt hour, for water use with electric water heating. Annual energy cost, based on your choice and measured in dollars, for water use with electric water heating. Lifetime energy cost, based on your choice and measured in dollars, for water use with electric water heating. Lifetime energy and water cost savings, based on your choice and measured in dollars, for water use with electric water heating. Lifetime energy and water cost savings for the number of units and item you selected, based on your choice and measured in dollars, for water use with electric water heating. Base Model with Electric Water Heating Form Labels Annual energy use, based on the base model and measured in dollars, for water use with electric water heating. Annual energy cost, based on the base model and measured in dollars, for water use with electric water heating. Lifetime energy cost, based on the base model and measured in dollars, for water use with electric water heating. Lifetime energy and water cost savings, based on the base model and measured in dollars,, for water use with electric water heating. Lifetime energy and water cost savings for the number of units and item you selected, based on the base model and measured in dollars, for water use with electric water heating. FEMP Recommended Levels with Electric Water Heating Form Labels Annual energy use, based on FEMP recommended levels and measured in dollars,, for water use with electric water heating. Annual energy cost, based on FEMP recommended levels and measured in dollars, for water use with electric water heating. Lifetime energy cost, based on FEMP recommended levels and measured in dollars, for water use with electric water heating. Lifetime energy and water cost savings, based on FEMP recommended levels and measured in dollars,, for water use with electric water heating. Lifetime energy and water cost savings for the number of units and item you selected, based on FEMP recommended levels and measured in dollars, for water use with electric water heating. Best Available with Electric Water Heating Form Labels Annual energy use, based on best available levels and measured in dollars,, for water use with electric water heating. Annual energy cost, based on best available levels and measured in dollars, for water use with electric water heating. Lifetime energy cost, based on best available levels and measured in dollars, for water use with electric water heating. Lifetime energy and water cost savings, based on best available levels and measured in dollars,, for water use with electric water heating. Lifetime energy and water cost savings for the number of units and item you selected, based on best available levels and measured in dollars, for water use with electric water heating. Self Closing Faucet with Electric Water Heating Form Labels Annual energy use, based on self closing faucet and measured in dollars, for water use with electric water heating. Annual energy cost, based on self closing faucet and measured in dollars, measured in gallon per cycle, for water use with electric water heating. Lifetime energy cost, based on self closing faucet and measured in dollars, for water use with electric water heating. Lifetime energy and water cost savings, based on self closing faucet and measured in dollars, for water use with electric water heating. Units to be purchased. Either Faucet or Showerhead, based on selection above. Lifetime energy and water cost savings for the number of units and item you selected, based on self closing faucet and measured in dollars, for water use with electric water heating. Your Choice with Gas Water Heating Form Labels Annual energy use, based on your choice and measured in kilowatt hour, for water use with gas water heating. Annual energy cost, based on your choice and measured in dollars, for water use with gas water heating. Lifetime energy cost, based on your choice and measured in dollars, for water use with gas water heating. Lifetime energy and water cost savings, based on your choice and measured in dollars, for water use with gas water heating. Lifetime energy and water cost savings for the number of units and item you selected, based on your choice and measured in dollars, for water use with gas water heating. Base Model with Gas Water Heating Form Labels Annual energy use, based on the base model and measured in dollars, for water use with gas water heating. Annual energy cost, based on the base model and measured in dollars, for water use with gas water heating. Lifetime energy cost, based on the base model and measured in dollars, for water use with gas water heating. Lifetime energy and water cost savings, based on the base model and measured in dollars,, for water use with gas water heating. Lifetime energy and water cost savings for the number of units and item you selected, based on the base model and measured in dollars, for water use with gas water heating. FEMP Recommended Levels with Gas Water Heating Form Labels Annual energy use, based on FEMP recommended levels and measured in dollars,, for water use with gas water heating. Annual energy cost, based on FEMP recommended levels and measured in dollars, for water use with gas water heating. Lifetime energy cost, based on FEMP recommended levels and measured in dollars, for water use with gas water heating. Lifetime energy and water cost savings, based on FEMP recommended levels and measured in dollars, for water use with gas water heating. Lifetime energy and water cost savings for the number of units and item you selected, based on FEMP recommended levels and measured in dollars, for water use with gas water heating. Best Available with Gas Water Heating Form Labels Annual energy use, based on best available levels and measured in dollars,, for water use with gas water heating. Annual energy cost, based on best available levels and measured in dollars, for water use with gas water heating. Lifetime energy cost, based on best available levels and measured in dollars, for water use with gas water heating. Lifetime energy and water cost savings, based on best available levels and measured in dollars,, for water use with gas water heating. Lifetime energy and water cost savings for the number of units and item you selected, based on best available levels and measured in dollars, for water use with gas water heating. Self Closing Faucet with Gas Water Heating Form Labels Annual energy use, based on self closing faucet and measured in dollars, for water use with gas water heating. Annual energy cost, based on self closing faucet and measured in dollars, measured in gallon per cycle, for water use with gas water heating. Lifetime energy cost, based on self closing faucet and measured in dollars, for water use with gas water heating. Lifetime energy and water cost savings, based on self closing faucet and measured in dollars, for water use with gas water heating. Units to be purchased. Either Faucet or Showerhead, based on selection above. Lifetime energy and water cost savings for the number of units and item you selected, based on self closing faucet and measured in dollars, for water use with gas water heating. For electric water heating applications, your selection of an energy saving with a flow rate of gallon(s) per minute will have a combined energy and cost savings (per) of For gas water heating applications, your selection of an energy saving with a flow rate of gallon(s) per minute will have a combined energy and water cost savings (per) of

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