We as a nation are becoming more aware of our impact on the environment and on our energy consumption. The increasing cost of petro products are a factor in this awareness, but our increasing knowledge of global warming and the subsequent melting of polar ice caps and other factors are also pushing that awareness to the forefront. A $15 dollar water heater blanket could save you an average of $8.35 per month by reducing your energy use. This is a small amount of money, but it is an investment that would normally pay for itself within 2 months, and could be done by most anyone in an hour or less.
The only important thing you should know when installing a water heater blanket is to make sure you have cutouts that keep the safety information and specifications visible (you can void your warranty if you don’t do this). By doing this, plumbers and others can get to important data, and the manufacturer’s warranty will remain intact.