Gas Water Heater Sizing Matrix

# in Household Water Consumption Recommended Size
Up to 4 Average use
No Jacuzzi-type tubs or multiple shower heads
40 gallons
Up to 6 Average use
No Jacuzzi-type tubs or multiple shower heads
50 gallons
Up to 6 Average use
No Jacuzzi-type tubs or multiple shower heads
40 gallons
Up to 4 Higher than average use
Longer or more frequent showers
50/65 gallons
Up to 6 Higher than average use
Jacuzzi-type tub or multiple shower heads
60 gallons
Up to 8 Average use
No Jacuzzi-type tubs or multiple shower heads
60 gallons
Up to 8 Average use
No Jacuzzi-type tubs or multiple shower heads
All members of household showering within 1-2 hours of one another
50/65 gallons
Larger Family Higher than average use
More than one Jacuzzi-type tub or multiple shower heads
75 gallons
Site inspection required
Heater would be a special order
 


Electric Water Heater Sizing Matrix

# in Household Water Consumption Recommended Size
Up to 3
Average use
No Jacuzzi-type tubs or multiple shower heads
40 gallons
Up to 3
Higher than average use
Longer or more frequent showers
Jacuzzi-type tub or multiple shower heads
60 gallons
More than 3 Average use
No Jacuzzi-type tubs or multiple shower heads
40 gallons
Up to 4 Higher than average use
Longer or more frequent showers
60 gallons
Larger Family Higher than average use
More than one Jacuzzi-type tub or multiple shower heads
100 gallons
Site inspection required
Heater would be a special order