![Does anyone know why there's a timer switch near the ceiling by my furnace and hot water heater? (Both natural gas) Home built in '92 : r/hvacadvice Does anyone know why there's a timer switch near the ceiling by my furnace and hot water heater? (Both natural gas) Home built in '92 : r/hvacadvice](https://external-preview.redd.it/does-anyone-know-why-theres-a-timer-switch-near-the-ceiling-v0-27Aaw2EvWVRe1wRiQKukxQbSl5lCrUPk6rScL9MGc9Y.jpg?auto=webp&s=16b596ffb248938b5ba82a3330b91372b0a7f4a8)
Does anyone know why there's a timer switch near the ceiling by my furnace and hot water heater? (Both natural gas) Home built in '92 : r/hvacadvice
![Intermatic 40 Amp 60-Minute Indoor Wall Mounted Mechanical Water Heater Timer, Steel, Gray WH40D89 - The Home Depot Intermatic 40 Amp 60-Minute Indoor Wall Mounted Mechanical Water Heater Timer, Steel, Gray WH40D89 - The Home Depot](https://images.thdstatic.com/productImages/811d80eb-c064-4665-a2d3-3041f0638365/svn/gray-metal-intermatic-timers-wh40d89-64_1000.jpg)
Intermatic 40 Amp 60-Minute Indoor Wall Mounted Mechanical Water Heater Timer, Steel, Gray WH40D89 - The Home Depot
![Smart Water Heater Timer. Heat Water When You Need It, Save Money When You Don't. Fast Installation, Easy to Use. For Electric Water Heaters Only. Smart Water Heater Timer. Heat Water When You Need It, Save Money When You Don't. Fast Installation, Easy to Use. For Electric Water Heaters Only.](https://m.media-amazon.com/images/I/613QqB5zN+L._AC_UF350,350_QL80_.jpg)
Smart Water Heater Timer. Heat Water When You Need It, Save Money When You Don't. Fast Installation, Easy to Use. For Electric Water Heaters Only.
![Intermatic 40 Amp 60-Minute Indoor Wall Mounted Mechanical Water Heater Timer, Steel, Gray WH40D89 - The Home Depot Intermatic 40 Amp 60-Minute Indoor Wall Mounted Mechanical Water Heater Timer, Steel, Gray WH40D89 - The Home Depot](https://images.thdstatic.com/productImages/70735bf1-956d-4de3-9594-6b459c54fef4/svn/gray-metal-intermatic-timers-wh40d89-44_600.jpg)