Yes, turning down your hot water heater can absolutely save you money on your energy bills. By reducing the thermostat setting, you decrease the amount of energy required to heat the water, leading to lower utility costs. This simple adjustment is an effective way to boost household energy efficiency.
Lowering Your Water Heater Thermostat: A Smart Money-Saving Move
Many people overlook their hot water heater as a potential source of savings, but it’s often one of the biggest energy consumers in a home. Adjusting the thermostat is a straightforward and cost-effective method to reduce your monthly expenses. Let’s explore how this works and what you can expect.
How Much Energy Does a Water Heater Use?
Water heating accounts for a significant portion of a household’s energy consumption, typically ranking second only to heating and cooling. The U.S. Department of Energy estimates that water heating can be responsible for 10-15% of your utility bill. This energy is used to maintain a set temperature, even when no hot water is being drawn.
The amount of energy consumed depends on several factors:
- Thermostat setting: Higher temperatures require more energy.
- Water usage: More hot water used means more heating.
- Age and efficiency of the unit: Older models are often less efficient.
- Insulation: Poor insulation leads to heat loss.
The Link Between Thermostat Settings and Savings
Turning down the thermostat on your hot water heater directly impacts energy consumption. When the temperature is set lower, the heating element or burner doesn’t have to work as hard or as often to maintain that temperature. This reduces electricity or gas usage, translating into tangible savings.
For every 10-degree Fahrenheit (about 5.6-degree Celsius) reduction in thermostat setting, you can expect to save between 3-5% on your water heating costs. This might seem small, but over a year, these savings can add up considerably.
What’s the Optimal Temperature Setting?
The U.S. Department of Energy recommends setting your water heater thermostat to 120°F (49°C). This temperature is hot enough for most household needs, including showering, dishwashing, and laundry, while also reducing the risk of scalding. Many water heaters are factory-set to 140°F (60°C), which is unnecessarily high for most homes and leads to wasted energy.
- 120°F (49°C): Recommended for most households. Balances energy efficiency with adequate hot water.
- 140°F (60°C): Often the default setting. Wastes energy and increases scalding risk.
- Below 120°F (49°C): May not provide enough hot water for some tasks and can increase the risk of bacterial growth (like Legionella) in tank-style heaters if consistently below 115°F (46°C).
Practical Steps to Turn Down Your Water Heater
Adjusting the thermostat is usually a simple process. Locate the thermostat dial or digital control on your water heater. It’s typically found on the side of the tank or near the heating element.
- Safety First: Turn off the power to an electric water heater at the breaker box or turn off the gas supply valve to a gas water heater.
- Locate the Thermostat: Find the control panel. For gas heaters, there’s usually a dial with temperature settings. For electric heaters, you might need to remove a cover plate to access the thermostat dials.
- Adjust the Temperature: Carefully turn the dial down to 120°F (49°C). If there isn’t a specific temperature marked, look for settings like "Warm" or "Hot" and choose the lower setting.
- Restore Power/Gas: Turn the power back on at the breaker or the gas valve.
- Test: Allow some time for the water to reach the new temperature. Test hot water at a faucet to ensure it’s at a comfortable level.
Important Note: If you’re unsure about adjusting your water heater, consult your owner’s manual or call a qualified plumber.
Beyond the Thermostat: Other Ways to Save on Hot Water
While lowering the thermostat is a great start, you can maximize your savings with a few additional steps. These can help reduce your overall hot water consumption and further lower your energy bills.
- Insulate Your Tank and Pipes: Adding an insulating blanket to older tanks and insulating hot water pipes can prevent heat loss, meaning your heater doesn’t have to work as hard.
- Fix Leaks: A dripping hot water faucet can waste a surprising amount of water and energy.
- Install Low-Flow Fixtures: Low-flow showerheads and faucet aerators reduce the amount of hot water used without sacrificing pressure.
- Wash Clothes in Cold Water: Most modern detergents work effectively in cold water, saving significant energy used for heating.
- Consider a Timer: For electric water heaters, a timer can be installed to heat water only during specific times, such as when you’re typically home.
Potential Downsides to Consider
While turning down the thermostat offers numerous benefits, there are a couple of points to keep in mind to ensure you’re still meeting your needs safely and effectively.
- Scalding Risk: While a lower setting reduces the risk of scalding, it’s still crucial to test the water temperature before use, especially for children and the elderly.
- Bacterial Growth: For tank-style water heaters, maintaining a temperature below 115°F (46°C) for extended periods can potentially allow bacteria like Legionella to grow. Setting it to 120°F (49°C) is generally considered safe.
- Dishwasher Performance: Some older dishwashers may require hotter water (around 140°F or 60°C) for optimal cleaning. Check your dishwasher’s manual. If this is the case, you might need to set your water heater slightly higher or use the dishwasher’s built-in booster heater.
Is it Worth Turning Down Your Hot Water Heater?
Absolutely. Turning down your hot water heater thermostat is a proven method for saving money on energy bills. It’s a simple, low-effort change that yields consistent savings over time. By setting your water heater to 120°F (49°C), you strike a balance between energy efficiency, comfort, and safety.
This adjustment is a key component of smart home energy management. It directly addresses a major energy expense without requiring a significant lifestyle change.
People Also Ask
### How much money can I save by lowering my water heater temperature?
You can expect to save approximately 3-5% on your water heating costs for every 10°F (5.6°C) reduction in the thermostat setting. For an average