Shutting off the water heater and air conditioner when leaving home can have both positive and negative consequences. Let's explore them separately:
Consequences of shutting off the water heater:
Energy Savings: One of the primary benefits of turning off the water heater is conserving energy. Water heaters can consume a significant amount of electricity or gas to keep the water hot even when you are not using it. By turning it off, you can save on your energy bills.
Reduced Risk of Malfunctions: If your water heater is older or prone to malfunctions, turning it off when not in use can reduce the risk of potential leaks, water damage, or other issues that may arise when you are away and unable to address them promptly.
Consequences of shutting off the air conditioner:
Energy Savings: Similar to the water heater, turning off the air conditioner while you're away can result in energy savings. When the AC is running, it consumes a considerable amount of electricity, especially during hot weather.
Indoor Temperature: The main drawback of turning off the air conditioner is that the indoor temperature can become quite hot, especially during the summer months. This could lead to discomfort for pets, plants, and any sensitive belongings that might be affected by excessive heat.
Humidity and Mold: In humid climates, shutting off the air conditioner can increase the indoor humidity levels. High humidity can promote mold growth and damage wooden furniture or other moisture-sensitive items in your home.
Increased Energy Consumption upon Return: When you return home and turn on the air conditioner, it will have to work harder to bring the temperature back to your desired level. This initial surge in energy consumption might offset some of the energy savings you achieved by turning it off.
To find a balance, you could consider using programmable thermostats for both the water heater and air conditioner. These allow you to set schedules to turn them off or reduce their operation while you're away and have them resume regular operation before you return home. This way, you can save energy without compromising too much on comfort or risking potential issues. It's also worth considering your local climate and the duration of your absence when deciding whether to turn these appliances off completely or use a more controlled approach.