Hotwater-appliace-usage

Hot Water Appliances and Fixtures:

• Miller Farm Water Fixtures (w/ hot water):
  • (2) Showers
  • (3) Bathroom Sinks
  • (1) Kitchen Sink
  • (1) Washing Machine

• Water Heater AO Smith ProMax ECT-52
  • Element Wattage: 4500 Watts
  • R-rating: 16
  • Storage Capcity: 50 gal.
  • Tempeature Setting: 125 degrees Farenheit (as per thermastat)
  • Energy Efficiency Factor: .91
  • First Hours Rating: 58-62 gallons
  • Recovery Rate: 21 gallons by 90 degees F in one hour

• Clothes Washer Maytag model MAT12PDBAW
  • Total Average Water Used per Load: 31.5 gal.
  • Average Hot Water Used per Load: 6.5 gal.\

Hot Water Usage

Through using a number of online source we compiled these hot water estimates:

• Showering: 20 gal. (only the GRU table listed their number based on a 10 min. shower at 2.5 gal./min)
• Shaving: 2 gal.
• Washing Hands and Face: 2.6 gal.
• Shampooing Hair: 4 gal.
• Hand Dishwashing: 3.6 gal. (seems low)
• Clothes Washing: 25 gal. (only GRU listed usage for various washer settings, note that this number does not corrolate to the model information)
• Food Preparation: 5 gal. (DOE listings)

By using these estimates we figured that we use the following amount of hot water each week:

• 42 showers per week
• 12 shaves per week
• 100 hand and face washings
• 7 dish doings per week (one per day but figure 7.2 gallons as there are more occupants than what the above average assumes)
• 5 food prep
• 6 loads of laundry

The average daily usage is therefore: 192 gallons of hot water

• per person: 28 gallons of hot water per day

Note: The above estimates are made assuming 7 residents, which is the average annual number of occupants.