Data sourced from the U.S. Dept. of Energy, Energy Star, and the EIA.
Smart Home Cost Calculator
Pick the devices you're considering and see the upfront cost and estimated yearly energy savings, with a rough payback.
Pick the devices you're considering:
$230 · ~$140/yr
$180 · ~$90/yr
$50 · ~$30/yr
$320 · ~$60/yr
$120
$160 · ~$110/yr
Estimate, not a guarantee.Rounded for guidance. Your figures depend on your home, local rates, and usage.
How we calculate this
Formula: Upfront cost = sum of the selected devices' typical retail prices. Savings = sum of each device's modelled annual energy reduction. Payback = cost ÷ savings (omitted when a device saves no energy).
Assumptions:
2026 typical retail prices, before sales or rebates.
Savings assume the device is actually configured and used (a thermostat only saves if a setback schedule runs).
Devices are additive; in reality overlapping devices can reduce each other's marginal saving.
Limits: Safety devices such as leak sensors are listed with no energy saving on purpose — they earn their place on risk, not payback. Actual savings depend heavily on your habits.
No. Thermostats, LEDs, and energy monitors save meaningfully; leak sensors and some convenience devices are safety- or comfort-first with little direct saving. The calculator flags this.
Are these real prices?
They're 2026 typical retail prices. Your final cost depends on brands, sales, and how many you buy.
How we frame itCost→Savings→Payback→Confidence→Next step