COMPARISONS
Gas vs Electric Water Heater: Cost, Efficiency and Best Choice
Compare gas vs electric water heaters: installed cost, operating cost, efficiency, lifespan and which type fits your home in 2026.
Gas and electric water heaters both deliver hot water, but the bill and the installation differ. Gas heaters cost less to run where gas is cheap; electric heaters cost less upfront and need no venting. Here are the real 2026 numbers.
THE SHORT ANSWER
Gas vs electric water heater cost
Electric tank heaters cost $800-$1,500 installed; gas costs $1,100-$2,000. Gas runs 20-30% cheaper monthly in most markets; electric is simpler and lasts longer. Heat pump (electric) units are 2-3x more efficient at $1,800-$3,500.
Installed cost comparison
A standard 50-gallon electric water heater averages $800-$1,500 installed ($400-$900 unit + $200-$600 labor). A gas water heater of the same size averages $1,100-$2,000 installed ($500-$1,200 unit + $300-$800 labor including venting).
Tankless versions run higher: electric tankless $1,000-$2,500 and gas tankless $1,500-$3,500 installed, including electrical or venting upgrades.
- Electric tank: $800-$1,500 installed
- Gas tank: $1,100-$2,000 installed
- Electric tankless: $1,000-$2,500 installed
- Gas tankless: $1,500-$3,500 installed (with venting)
Operating cost and lifespan
Gas water heaters typically cost 20-30% less to operate than electric where natural gas is available, but the gap depends on local utility rates. Electric units are slightly simpler and last 10-15 years; gas units last 8-12 years and need annual venting checks.
Heat pump water heaters (electric) change the math completely: they run 2-3x more efficient than standard electric and often beat gas on monthly cost, at a higher upfront price of $1,800-$3,500 installed.
- Gas: 20-30% cheaper to run in most markets
- Electric: simpler, 10-15 year lifespan
- Heat pump (electric): 2-3x more efficient, $1,800-$3,500 installed
- Compare local gas vs electric rates to pick the winner
Which should you choose?
Choose gas when natural gas service exists and your goal is the lowest monthly bill. Choose electric when you want the cheapest installation, no venting or gas line, or plan to pair it with a heat pump unit for maximum efficiency.