I use a furnace to take care of my heating in the freezing winter weeks of the year. I would much rather have a furnace than a central heating and A/C machine. As a matter of fact, my a/c is supplied through 2 window a/c machines. I believe that central heating and cooling is just too extravagant to run. I had it once a long time ago in a lake residence I was renting when I got out of university. And I would never ever get central heating and a/c for my own residence. I decided after seeing the super high electric bills because of it! But let me tell you, I had an electric furnace that recently has been giving me those same costly electric bills in the winter. Because of it being electric, it is certainly no different than a central heating and A/C machine. But it does save a little bit of currency. I decided I was going to get rid of the electric furnace for this reason and get myself a gas heating machine instead… Yes I suppose you are thinking “is this person nuts?”, but I am not afraid of gas products in the slightest. I actually know how to take care of them and how to make a gas heating machine safe… The removal of the electric furnace and the upgrade of the current gas furnace was quite extravagant and was a pretty crucial thing. I had to take off from work to have it completed. But when it was all finished, my residence was heating just as fantastic as the electric heating machine was!