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Typical Water Heating Costs 
and Monthly Savings 
with Swing Green Solutions 

 

Monthly Savings Comparison (download pdf)

Hospital

Average hot water used each month 532,292 gallons for 500 person occupancy @53 gls per person

Monthly Cost
of Water Heating

GreenFox DWHR Monthly Savings

AirFox ACHR
Monthly Savings

Electric Water Heater $12,845

$5,230

$8,563

Gas Water Heater Cost $5,110

$2,081

$3,407

BTU's Used 310,491,052

126,414,214

206,994,035

 

Health Club/Spa

Average hot water used each month 228,125 gallons for 300 showers per day @ 25 gls per person

Monthly Cost
of Water Heating

GreenFox DWHR
Monthly Savings

AirFox ACHR
Monthly Savings

Electric Water Heater $5,505

$2,241

$3,670

Gas Water Heater $2,190

$892

$1,460

BTU's Used 133,067,594

54,177,520

88,711,729

 

College Dorms/Barracks

Average hot water used each month 357,700 gallons - 98% occupancy, 2 person rm @30 gls person/day

Monthly Cost
of Water Heating

GreenFox DWHR
Monthly Savings

AirFox ACHR
Monthly Savings

Electric Water Heater $8,632

$3,514

$5,755

Gas Water Heater $3,420

$1,393

$2,280

BTU's Used 208,649,987

84,950,352

139,099,991

 

Full Service Hotel

Average hot water used each month 349,305 gallons for 66% occupancy, 2 person rm @ 30 gls person/day

Monthly Cost
of Water Heating

GreenFox DWHR
Monthly Savings

AirFox ACHR
Monthly Savings

Electric Water Heater $8,429

$3,432

$5,619

Gas Water Heater $3,340

$1,360

$2,227

BTU's Used 203,753,100

82,956,619

135,835,400

 

Full Service Restaurant

Average hot water used each month 76,042 gallons, 500 meals/day washing @ 5 gls per meal

Monthly Cost
of Water Heating

GreenFox DWHR
Monthly Savings

AirFox ACHR
Monthly Savings

Electric Water Heater $1,835

$747

$1,223

Gas Water Heater $730

$297

$487

BTU's Used 44,355,865

18,059,173

29,570,576

 

Residential

Average hot water used each month 4,258  gallons, 4 person household @ 35 gls person/day

Monthly Cost
of Water Heating

GreenFox DWHR Monthly Savings

AirFox ACHR Monthly Savings

Electric Water Heater $103

$42

$69

Gas Water Heater $41

$17

$27

 BTU's Used 2,483,928

1,011,314

1,655,952

 

Variables used in calculations

Operating Costs

(DWHR)
Drain Water Heat Recovery

(ACHR)
Air Conditioning Heat Recovery

Ground water temp 50 °F

A/C   5 Tons residential

Natural Gas 1.004/Therm

Drain water temp 100 °F

A/C  ≥  20 Tons commercial

Water Heater Energy Factor 0.92 Electric

Model Efficiency 0.57

Cooling Months 8

Water Heater Energy Factor 0.61 Natural Gas

   
 

NOTICE: These tables and calculations show potential savings that are viewed here with a range of defined variables. For an accurate estimate of savings, consult your local dealer or Swing Green for an engineering analysis of your facility.

 

The values contained in these estimating calculators are based on national averages from the Bureau of Labor Statistics, Environmental Protection Agency, U.S. Census Bureau and other sources.

1) . "ACEEE | Emerging Hot Water Technologies and Practices for Energy Efficiency as of 2011." ACEEE, n.d. Web. 20 Jan. 2014. http://aceee.org/research-report/a112

2). "Average Energy Prices in the Los Angeles Area." U.S. Bureau of Labor Statistics. U.S. Bureau of Labor Statistics, n.d. Web. 20 Jan. 2014. http://www.bls.gov/ro9/cpilosa_energy.htm

3). "Energy.gov." Energy Cost Calculator for Electric and Gas Water Heaters. N.p., n.d. Web. 20 Jan. 2014. http://energy.gov/eere/femp/energy-cost-calculator-electric-and-gas-water-heaters-0#output

4). "ENERGY STAR Guide for Restaurants: Putting Energy into Profits." Home : ENERGY STAR. Environmental Protection Agency, n.d. Web. 20 Jan. 2014. http://www.energystar.gov/buildings/tools-and-resources/energy-star-guide-restaurants-putting-energy-profit

5). "Hot Water Consumption per Occupant." Hot Water Consumption per Occupant. N.p., n.d. Web. 27 Jan. 2014.  http://www.engineeringtoolbox.com/hot-water-consumption-person-d_91.html

6). "Hotel Revenue Statistics." Statistic Brain RSS. N.p., n.d. Web. 20 Jan. 2014. http://www.statisticbrain.com/hotel-revenue-statistics/

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