There are so many things to take into consideration when you’re purchasing a new furnace. What size do you need to keep your whole home cozy? What fuel will it use and is there anything you have to do to get that fuel, such as having your home connected to natural gas lines? How efficient is it and how much will it cost to run? One thing that you should definitely decide early in the furnace-shopping process is whether to get an upflow or downflow furnace.
What are the differences? What would be the reasons for choosing one over the other? Here is a primer for you so you can determine which makes the most sense for your home.