Electric Tankless Water Heater Energy Cost Calculator
On-demand electric water heater that heats water only when needed, eliminating standby heat loss.
Power Draw
18,000W
watts
Annual kWh
2,920
avg usage
Annual Cost
$380
avg national
CO₂/Year
2.1 tons
carbon impact
Electric Tankless Water Heater Cost Calculator
Customize usage and your state's electricity rate for accurate cost estimates.
Daily Cost
$2.34
Monthly Cost
$71.17
Annual Cost
$854
Lifetime Cost
$17,082
Energy Saving Opportunities
ENERGY STARAvailable
Save up to 24% vs standard models
~$205/year savings
Smart VersionAvailable
Smart scheduling saves 15% more energy
~$128/year savings
Energy Saving Tips
- ✓Install point-of-use units for remote fixtures
- ✓Size properly for peak demand
- ✓Consider electrical upgrade
Compare Alternatives
| Appliance | Watts | Annual kWh | Annual Cost |
|---|---|---|---|
| Electric Tankless Water Heater (current) | 18,000W | 2,920 | $380 |
| Heat Pump Water Heater | 500W | 1,095 | $142 |
Electric Tankless Water Heater Cost Summary
Purchase Price (one-time)$1,800
Annual Energy Cost (at 13¢/kWh)$854
Lifespan 20 years
Lifetime Energy Cost (energy only)$17,082
Total Cost of Ownership (purchase + energy)$18,882
Electric Tankless Water Heater Energy FAQ
Electric Tankless Water Heater Running Cost by City (top 100)
Electricity rates vary by city, so the cost to run an electric tankless water heater does too. See your local cost:
New York, NYLos Angeles, CAChicago, ILHouston, TXPhoenix, AZPhiladelphia, PASan Antonio, TXSan Diego, CADallas, TXSan Jose, CAAustin, TXJacksonville, FLFort Worth, TXColumbus, OHIndianapolis, INCharlotte, NCSan Francisco, CASeattle, WADenver, COWashington, DCNashville, TNOklahoma City, OKEl Paso, TXBoston, MAPortland, ORLas Vegas, NVDetroit, MIMemphis, TNLouisville, KYBaltimore, MDMilwaukee, WIAlbuquerque, NMTucson, AZFresno, CASacramento, CAKansas City, MOMesa, AZAtlanta, GAOmaha, NEColorado Springs, CORaleigh, NCLong Beach, CAVirginia Beach, VAMiami, FLOakland, CAMinneapolis, MNTulsa, OKBakersfield, CATampa, FLWichita, KSArlington, TXAurora, CONew Orleans, LACleveland, OHHonolulu, HIAnaheim, CALexington, KYStockton, CAHenderson, NVCorpus Christi, TXRiverside, CANewark, NJSaint Paul, MNSanta Ana, CACincinnati, OHIrvine, CAOrlando, FLPittsburgh, PASt. Louis, MOGreensboro, NCOyster Bay, NYJersey City, NJAnchorage, AKLincoln, NEPlano, TXDurham, NCBuffalo, NYChandler, AZChula Vista, CAToledo, OHMadison, WIGilbert, AZReno, NVLubbock, TXFort Wayne, INNorth Las Vegas, NVSt. Petersburg, FLIrving, TXLaredo, TXWinston-Salem, NCChesapeake, VAGlendale, AZGarland, TXScottsdale, AZArlington, VANorfolk, VANorth Hempstead, NYBoise, IDFremont, CASpokane, WA
Compare All Appliance Costs
See energy costs for 178+ household appliances and find ways to reduce your electric bill.