Question: You recently wrote about putting a timer on a water heater to save energy. My utility company told me that would be a waste of money because it actually would save little energy. Who's right ...

When notes stuck to the water heater failed [Ryan] decided to whip up “the world’s most expensive 240V relay” using a servo, a real time clock and of course an Arduino. All in an attempt to save a ...

Q: My electric water heater is 18 years old, but still works and makes enough hot water. I want to reduce my water heating costs. What can I do to make my water heating more efficient other than ...

Q. My electric water heater is 18 years old, but still works and makes enough hot water. I want to reduce my water heating costs. What can I do to make my water heating more efficient other than ...

Dear Jim: My electric water heater is 18 years old, but still works and makes enough hot water. I want to reduce my water heating costs. What can I do to make my water heating more efficient other ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? You probably don’t spend a whole lot of time thinking about your water heater, and ...