Smart thermostats
When you feel the cold at home it can be tempting to turn the thermostat up - but this is one of the most common causes of higher energy bills. With a smart thermostat, you can stay warm without overdoing it on the heating, thanks to a system that learns from your usage.
For example, if you always turn the heating on when you get home from work at 6pm, a smart thermostat will learn from this and ensure the home is a suitable temperature at 6pm every day. This reduces heating usage when nobody is home.