When replacing a furnace size matters!   A furnace that’s too small won’t be able to keep your home warm when it’s extremely cold outside.  A furnace that is too large cycles on and off more frequently.  That causes more wear and tear on components as well as wastes energy.  It also can make the temperature vary too much in your home.  You also need to make sure that the furnace has the right size air ducts to carry the flow of the air or the airflow going through the ducts can be noisy.  Be sure to choose a HVAC professional who will take the time to calculate your heating needs and install the proper furnace for your home! Furnace Repair Denver can answer any questions you may have about your furnace.