Personally I think that I am always freezing cold. No matter what the temperatures is outside my home is cold. In the winter the actual temperature is unbearable. My furnace has to be constantly running. Also I must put towels underneath all my own doors and seal my windows. I can feel the cool air received from outside of my home. Inside the summer my house is still very cold. There are a lot of trees directly around my house. I get simply no natural sunlight to warm my home. I am cold in my house also when it’s warm outside. I do not like to always have my heating system operating. I do not feel it is designed for the unit. My furnace is important to me. When you are always cold you might need a quality heating system. I love my heating system and I do not want it to breakdown. My partner and I schedule regular maintenance on my heating equipment. My local HVAC tech inspects my system for soil, rust and corrosion frequently. And also the technician checks to see if I might be losing any of my personal heated air. My system works great because I take care of it. Also I do my own, personal form of zone control heating. My partner and I shut all my doors, including towels underneath them and we seal the windows shut. My furnace only should heat my living room at that point. The catch is that my bedroom gets so cold. My HVAC technician recommended installing thermostats inside my bedroom and living room. I can do my type of zone control heating by heating specific rooms as opposed to the whole house. My bedroom may very well be kept slightly warmer than my whole house.