Water Heater is the second largest contributor to the energy bill after the air conditioner/central heat. Water has high heat capacity, so it takes a lot of energy to warm up. For example, it takes one kilowatt-hour to warm up about 10 gallons of water from 80F to 120F. Your electric or gas bill is noticeably affected by how much hot water you use in your house. That includes showering, clothes washer, dishwasher. Here are some general guidelines for how you can reduce your water heater energy use:
Managing Energy Use By Water Heater
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Energy spent on the air conditioner can take up a significant chunk of your energy bill. It is not easy to calculate the energy use by the central air conditioner, because it depends on the climate you live in, the thermal insulation of your house, the air conditioner type and its efficiency. But, nevertheless following these guidelines will help reduce your air conditioner’s energy use: