The payback period depends on the device cost, household electricity usage patterns, and local electricity rates. Taking a medium-sized villa as an example, a smart thermostat typically costs around 500–1000 SAR. If it helps save 200–300 SAR per month on electricity bills, the investment can usually be recovered within 3 to 8 months. After that, the savings translate directly into net benefits. With a typical device lifespan of up to 10 years, the long-term economic advantage is substantial.