Heliodyne HF 1 406 G 40 AC S E: Energy Use & Operating Cost

Cost is an estimate. Operating cost is an estimate, computed from each model's measured annual energy use at the EIA U.S. national-average residential electricity rate (18.56 ¢/kWh, March 2026). Your actual cost depends on your local utility rate and how you use the appliance. Verify current price and exact specs with the retailer. How we compute this.

The Heliodyne HF 1 406 G 40 AC S E is an ENERGY STAR certified Solar with Electric Backup water heater. It uses about — of electricity. This model runs on gas or propane for its main function, so we don't publish an electricity-based operating-cost estimate — its dollar cost depends on a fuel price we don't model here. Energy use is the measured figure from the ENERGY STAR certification; the cost is computed so you can compare it against other models on the same basis.

Specifications matter alongside running cost. This page is a spec-and-cost comparison, not buying, installation or repair advice; confirm exact dimensions and current pricing with the retailer before you buy.

What drives this number

Energy use is the measured ENERGY STAR figure; the dollar cost is computed. Operating cost is an estimate, computed from each model's measured annual energy use at the EIA U.S. national-average residential electricity rate (18.56 ¢/kWh, March 2026). Your actual cost depends on your local utility rate and how you use the appliance.

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