kWh Index

Lennox water heaters

4 water heaters listed under Lennox.

ModelUEFCosts to run
WHHP080T45MD240S****4.10$222 a year
WHHP065T45MD240S****4.05$225 a year
WHHP050T45MD240S****3.83$156 a year
WHHP040T45MD240S****3.55$168 a year

Computed from electricity at 18.34¢/kWh, the EIA average for US in June 2026. A kilowatt-hour is 3412 BTU. This is a rate times a rating, not a prediction of your bill.

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Source: ENERGY STAR certified product data, published by the U.S. EPA and used with attribution. This is a register of certified models, not of every model on the market. ENERGY STAR is a registered mark of the U.S. EPA; this site is not affiliated with or endorsed by EPA or DOE.