No idea where I got this… Cookie
…Compare Life-Cycle Costs …This is in US $ 2007…
**Water Heater Type **
**Efficiency (EF) **
**Installed Cost **1
**Yearly Energy Cost **2
**Life (years) **
**Total Cost (Over 13 Years) **3
Conventional gas storage
0.60
$850
$350
13
**$5,394 **
High-efficiency gas storage
0.65
$1,025
$323
13
**$5,220 **
Condensing gas storage
0.86
$2,000
$244
13
**$5,170 **
Conventional oil-fired storage
0.55
$1,400
$654
8
**$11,299 **
Minimum Efficiency electric storage
0.90
$750
$463
13
**$6,769 **
High-eff. electric storage
0.95
$820
$439
13
**$6,528 **
Demand gas (no pilot) 4
0.80
$1,600
$262
13
**$5,008 **
Electric heat pump water heater
2.20
$1,660
$190
13
**$4,125 **
Solar with electric back-up
1.20
$4,800
$175
13
**$7,072 **
- Purchase costs include our best estimates of installation labor and do not include financial incentives.
- Operating cost based on hot water needs for typical family of four and energy costs of 9.5¢/kWh for electricity, $1.40/therm for gas, $2.40/gallon for oil.
- Future operating costs are neither discounted nor adjusted for inflation.
- Currently, there is too little data to accurately estimate life expectancy for tankless water heaters, but preliminary data shows that tankless water heaters could last up to 20 years. For all water heaters, life expectancy will depend on local variables such as water chemistry and homeowner maintenance.