How often do you think about your furnace? I mostly think about my furnace when I am freezing and then it’s mostly just a how high can I turn it before DH yells at me. I’m luckier than most because I live in Southern California where I don’t have to worry about being buried in snow. Although! We did get snow in my area. Not enough that it stuck but it’s SNOW just the same!! In San Diego?!  Having it be 38° during the day made me thankful that I get to stay indoors this weekend! Brrrrr!! So, now that we are in the full blown “I Hate Winter” mode it’s really time to think about your heating system. The last thing you need to do is go stay with the in-laws because your furnace doesn’t work! THE most important item in your home during the winter is an efficient heating system. Of course like just about everyone I know you worry about heating the house without breaking the bank. I want to be WARM. I also don’t want to give SDG&E my entire paycheck.  Thankfully, DH is a fantastic handyman. He is great about changing filters and making sure…