If you have an older (pre-1989) water heater that does not have a built-in insulating layer or insulation blanket, then you can save money and CO2 by insulating it yourself. This is cheap and easy. 
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(Note: Incorrectly insulating a gas-pilot water heater can cause fires and is not recommended.)
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<li>Get 175 pounds of CO2 savings per year by installing an insulating  blanket on your water heater.
