Programming your thermostat is something everyone should know how to do. It saves you the effort of changing the temperature multiple times a day and can save you a lot of money on utility bills.
This all depends on what your ideal temperature is. You can test this in the summer by setting your thermostat to around 78 and moving your way down until you’ve found your most comfortable temperature. In the winter, set your thermostat to around 68 and work your way up. While there are recommendations that you can find online for what you should set it to, it all depends on whats comfortable to you.
Note: Lower temperatures in the summer and higher temperatures in the winter can increase your utility bills.
Once you’ve found what temperature is comfortable to you, you can set it up so when you’re away, your furnace will run less. In the summer, set the temperature 5 degrees higher for times of the day when you’re not home. In the winter, set it 5 degrees lower. Doing this can reduce your energy bill by giving your furnace a break while you’re away.
In this video, we're using a Honeywell T4 Pro to demonstrate how to program your thermostat. If you don't have this exact model, that's okay. Most thermostats follow a similar dialog when programming them.