Did you know that your water heater tank uses at least 15% of your home’s energy? That’s because the water is heated throughout the day and night, whether you’re using the water or not.
Hot water is probably essential for 2 hours in the morning, and 4 hours in the evening. Not 24 hours a day. And, with a tank, it is possible to run out of hot water if you have a lot of guests.
There are many options for reducing the energy needed to provide your home with hot water, and make your system more efficient, while providing all the hot water you need. If your water tank is more than 12 years old, you may consider replacing it with a new tank, or look into some of this new technology. (You can tell the year by looking at the last 2 digits of the serial #)
This is the conventional method. Most homes have a water tank. This is the least efficient and practical way to store/generate hot water. The hot water tank requires the water to be constantly heated and stored, whether used or not. Newer models are slightly better at holding heat. If you have a storage tank, consider using low-flow faucets and showers to conserve your water, and wrap your tank and pipes in insulation to preserve as much of the heat as possible.
Demand or Instantaneous Water Heater
Water is heated on demand, reducing the need for a tank, and reducing energy consumption by 20-30%. This system is ideal for a natural gas-heated system. Choose one with an electronic ignition, so you don’t need a continuously burning gas pilot light. Home Depot has these starting at $600. That’s a little pricey, but the savings will add up and it will pay for itself over time.
Heat-pump Water Heater
Uses the surrounding air to heat the water. It offers savings of up to $200 per year, but with a high initial cost. This system has the added benefit of dehumidifying humid areas, and keeping the air cool, because it is consuming warm air.
Check out Flex Your Power for more options, including a Solar Water Heater, and tips about choosing an energy-efficient water heater.