ELECTRICITY CALCULATOR
Tank vs tankless electric water-heater cost
Compare electricity use and running cost for a tank water heater and a tankless electric water heater with your own rate.
How this calculation works
Each option's watts ÷ 1,000 × hours × days gives kWh. The calculator applies the same electricity price to both. Purchase cost, output, cycling and maintenance are excluded.
Before you use the result
This is an illustrative estimate, not a provider quote or your actual bill. Enter your current rates and charges from your plan or latest statement. Prices, billing rules and coverage can change.
Find your provider
FESCO · Octopus Energy · Southern California Edison · Search all providers
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