Smart-home devices that may pay for themselves

Start with the problem

A smart thermostat may help a household with a predictable away schedule, but it may save little when someone is always home and already adjusts the temperature carefully. Smart plugs can stop scheduled devices from running unnecessarily. Leak sensors may prevent a costly problem even though they do not reduce a monthly bill.

Calculate a simple payback

Divide the total installed cost by the estimated yearly savings. A $120 device saving $40 per year has a three-year simple payback. Treat manufacturer estimates as a starting point, not a promise, and check utility rebates before buying.

Devices worth considering

Choose products that work even when the internet is down and do not require an expensive subscription for basic functions.

• Thermostat for homes with long, predictable away periods.
• Leak sensors near water heaters, washing machines, and sinks.
• Smart plugs for reliably scheduled lamps or small appliances.
• Energy monitor only when its information will change household behavior.