SOLAR SYSTEM SIZING

  • Rough Rule of Thumb:Figure about 20 gallons of hot water per person per day
  • Figure on 1 square foot of collector area per gallon
  • Number of persons times 20.
  • Minimum of 30 gallons of storage per person per day

Collector Dimensions

Household Members 1 2 3 4 5 6
Number of Collectors, Cold Climates 1-4'x8' 1-4'x10' 2-4'x8' 2-4'x10' or 3-4'x8' 3-4'x8' 3-4'x10' or 5-4'x6'
Number of collectors, warm climates 1-3'x8' 1-4'x8' 1-4'x10' 2-4'x8' 2-4'x10' or 3-4'x6.5' 3-4'x8'