You know that when you are in a house that is extremely cold, you would like to have enough heat so that you will be comfortable. The alternative is to wear layers of clothes but this is not always ideal. Two of the things that can provide heat are the furnace and the heat pump.
The furnace will be able to heat your home with the use of combustion. The heat pump will be able to get hot air from the outside even if the temperature outside is cold.
The heat pump will be able to move hot air inside your home so that you can feel comfortable. Take note that you can always adjust the temperature of the heat that you need. It will make a lot of difference that way.