Typical Monthly Savings

Hospital

532,292 GALLONS HOT WATER A MONTH

(500 person/35 gallons each per day)

Electric Water Heater Cost $12,845 

Gas Water Heater Cost $5,110

BTU's Used 310,491,052

GreenFoX DWHR SAVINGS PER MONTH 

Electric Water Heater $5,230

Gas Water Heater $2,081 

BTU's Recovered 126,414,214

AirFoX ACHR SAVINGS PER MONTH

Electric Water Heater $8,563

Gas Water Heater $3407 

BTU's Recovered 206,994,035

Health Club

228,125 GALLONS OF HOT WATER A MONTH

(300 showers per day/25 gallons each shower)

Electric Water Heater Cost $$5,505

Gas Water Heater Cost $$2,190

BTU's Used 133,067,594

GreenFoX DWHR SAVINGS PER MONTH 

Electric Water Heater $2,241

Gas Water Heater $892 

BTU's Recovered 54,177,520

AirFoX ACHR SAVINGS PER MONTH

Electric Water Heater $3,670

Gas Water Heater $1,460

BTU's Recovered 88,711,729 

Dormitory

357,700 GALLONS OF HOT WATER A MONTH

(200 person/30 gallons each per day)

Electric Water Heater Cost $8,632

Gas Water Heater Cost $3,420

BTU's Used 208,649,987

GreenFoX DWHR SAVINGS PER MONTH 

Electric Water Heater $3,514

Gas Water Heater $1,393

BTU's Recovered 84,950,352

AirFoX ACHR SAVINGS PER MONTH

Electric Water Heater $5,755

Gas Water Heater $2,280

BTU's Recovered 139,099,991

Full Service Hotel

349,305 GALLONS OF HOT WATER A MONTH

(290 person/30 gallons each per day)

Electric Water Heater Cost $8,429

Gas Water Heater Cost $3,340

BTU's Used 203,753,100

GreenFoX DWHR SAVINGS PER MONTH 

Electric Water Heater $3,432

Gas Water Heater $1,360

BTU's Recovered 82,956,619

AirFoX ACHR SAVINGS PER MONTH

Electric Water Heater $5,619

Gas Water Heater $2,227

BTU's Recovered 135,835,400

Full Service Restaurant

76,042 GALLONS OF HOT WATER A MONTH

(500 person/5 gallons each per day)

Electric Water Heater Cost $1,835

Gas Water Heater Cost $730

BTU's Used 44,355,865

GreenFoX DWHR SAVINGS PER MONTH 

Electric Water Heater $747

Gas Water Heater $297

BTU's Recovered 18,059,173

AirFoX ACHR SAVINGS PER MONTH

Electric Water Heater $1,223

Gas Water Heater $487

BTU's Recovered 29,570,576

Single Family Home

4,258 GALLONS OF HOT WATER A MONTH

(4 person/35 gallons each per day)

Electric Water Heater Cost $103

Gas Water Heater Cost $41

BTU's Used 2,483,928

GreenFoX DWHR SAVINGS PER MONTH 

Electric Water Heater $42

Gas Water Heater $17 

BTU's Recovered 1,011,314

AirFoX ACHR SAVINGS PER MONTH

Electric Water Heater $69

Gas Water Heater $27 

BTU's Recovered 1,655,952

Calculated Savings based on the following variables

Operating Costs


 Electric $0.13/kWh  

 Electric Water Heater Energy Factor 0.92 


Natural Gas $1.004/Therm 

Natural Gas Water Heater Energy Factor 0.61 

Drain Water Heat Recovery (DWHR)

 Ground water temp 50 °F 

 Drain water temp 100 °F  

 Model Efficiency 0.57  

Air Conditioning Heat Recovery (ACHR)

 A/C 5 Tons residential 

 A/C ≥ 20 Tons commercial 

 Cooling Months: 8 


References for Monthly Savings

American Council for an Energy-Efficient Economy

“ACEEE | Emerging Hot Water Technologies and Practices for Energy Efficiency as of 2011" ACEEE, n.d. Web. 20 Jan. 2014.  

Average Energy Prices in the Los Angeles Area, U.S. Bureau of Labor Statistics

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.  

Energy Cost Calculator for Electric and Gas Water Heaters

"Energy.gov" Energy Cost Calculator for Electric and Gas Water Heaters. N.p., n.d. Web. 20 Jan. 2014.  

ENERGY STAR Guide for Restaurants: Putting Energy into Profits

 "ENERGY STAR Guide for Restaurants: Putting Energy into Profits." Home: ENERGY STAR . Environmental Protection Agency, n.d. Web. 20 Jan. 2014 

Hot Water Consumption

"Hot Water Consumption per Occupant." Hot Water Consumption per Occupant. N.p., n.d. Web. 27 Jan. 2014.  

Hotel Revenue Statistics

 "Hotel Revenue Statistics." Statistic Brain RSS . N.p., n.d. Web. 20 Jan. 2014