When it gets certainly freezing out I tend to get headaches from it, this is just the way my body reacts… So because of this factor, every single Winter time I constantly make sure my apartment is heated certainly well; Either through my central heating system or from the many amounts of portable space furnaces I have around here, i sort of alternate between both the central heating system & the portable space furnaces because I try to save on energy use when it is so freezing out that you need to be running the furnace twenty more than three hours a day & several afternoons per week… Central heating in itself occasionally does not sizzling my apartment enough because of how freezing it gets… And this would require me to certainly crank the heating system, but however this would make it so that I am pretty much paying a luck in energy use. So this is where the portable space furnaces that I have come into play. I have a portable space furnace for each & every room in my condo to act the same way as the central heating system would. It creates whole apartment heating for me with all of these portable space heaters. And this is what I need when it is this freezing to avoid those headaches that the freezing freezing ends up giving me every single year. It helps with the energy costs as well. So just food for thought…if you have a freezing temperature, try buying a bunch of portable space furnaces to save on energy use of your central heating & cooling system during this time.