There are a lot of myths out there about ways to save energy and how you can live a greener lifestyle, so it's sometimes confusing for homeowners who hear conflicting advice. This happens most frequently when it comes to managing the temperature controls for your home. You'll often hear folk wisdom about how it's better to keep the heat at the same temperature all day because furnaces have to work harder to bring the heat back up after having cooled down while you're away.
It can't be said enough that this is simply not true. You will use much less energy, and consequently contribute less to manmade climate change, by setting your thermostat to lower temperatures at night when you're asleep and during the day when you're at work or school.
As environmental site Grist notes, the reason for this is physics. An enclosed space will cool down faster depending on the difference between its inside and outside temperatures. As your house cools, it will lose heat at a slower rate, whereas if it's kept at a constant temperature all day, it will continue losing the same amount of heat over time.
It's important to remember that the next time someone passes along advice about how you can reduce your energy consumption and limit your environmental impact, you should first research their claim on the internet to determine its veracity. It's often the case that this advice will lead some to adopt more harmful lifestyle practices, rather than mitigating their effect on the environment.