GASELECTRICTANKLESSHIGH EFFICIENCY
Life Span8 – 10 Years*10 – 15 Years*20+ Years*8 – 15 Years*
Size30 gal. to 70+ gal.2.5 gal. to 70+ gal.Unlimited**30 gal. to 70+ gal.
ProsCheaper to OperateLonger Life SpanUnlimited Supply of Hot WaterUse 10% – 50% Less Energy
Savings Over Life Span__$1,800$500
Average Install Cost$850$750$1,800Gas = $2,000 | Electric = $820
Annual Operating Cost$280$561$221Gas = $207 | Electric = $532
CO2 (Pounds Per Year)
3,1456,9402,495Gas = 2,311 | Electric = 6,574
Efficiency Factor0.600.900.80Gas = 0.86 | Electric = 0.95

*Base on water with average mineral content. Water with high mineral content can reduce the life span of your water heater.
**Tankless water heater do not store water like traditional water heaters.  Instead, they heat up the water as needed.