When it comes to selecting a furnace for your home, there are several factors to consider. Size, efficiency, and cost all play important roles in determining which type of furnace is best for you. Generally speaking, the larger the home and higher its energy demands, the bigger and more efficient your furnace will need to be. If you have a small space or a modest energy demand, you may be able to get away with a smaller and less expensive furnace. Consider your lifestyle, budget, and preferences when selecting the model that is right for you.