Plan hard and fight easy, is what my dad always used to tell me. He said he learned that expression from one of his fellow soldiers while fighting overseas, but that it applies to every single thing you can do in life. It took me a few years to really grasp what he was saying, but then it finally took root. A test is easy if you studied hard, running a marathon is easy if you trained hard, and so on. As I was having my cabin constructed, I kept the expression in mind. By planning everything out, right down to every window pane and air duct, I will make living there much easier after the fact. Right away I realized that the details of the blueprint were wrong if I wanted to maximize the efficiency of my heating and cooling system. Having so many windows facing east and west would let a lot more sunlight in during the day, but also cause a lot of extra heating to build up. That would mean the AC would have to run more often in order to keep my place cooled off, so I switched some of those windows to facing north or south. I also made sure to get extra insulation in my walls and ceiling, to help trap the cooling air inside the house. All of these little things will add up to an HVAC system that does not have to work as hard, and also will bring me smaller energy bills. I’ve also done a ton of research on HVAC systems.