Three years ago most people barely even thought about their air conditioning, until it didn’t work. Then along came NEST, the smart thermostat that opened up a whole new world of home control, and ...

Two years ago we covered the launch of the Aquanta on Kickstarter; it's a water heater controller that learns your habits, and adjusts your water heater’s energy use accordingly. But saving energy isn ...

The hot water took too long to come out of the tap. That is what I was trying to solve. I did not intend to discover that, for a while there, water heaters like mine may have been open to anybody.

If you have an electric water heater, the Sinopé Calypso will save you money by shifting your water-heating routines to off-peak times when electricity costs less. The process may require some ...