This one door in my lake house has been driving me crazy since the fall, until my roommate and I finally came up with a way to deal with it. We thought of all the doors in the house, this nice slider door wouldn’t be a problem. It was a brand new Andersen door when both of us moved into the rental home, so both of us thought it wouldn’t give us a single issue. Well the problem is it wasn’t installed right because the lake house is crooked, so there’s a major slant of a gap between the door and where it sits inside the slider. There’s no easy cure for it, and the property owner assures us it’s fine. The problem is, the door is recessed. There are curtain hanging brackets in the ceiling a few feet in front of, but these won’t task to stop the drafts, but energy saving curtains need to be pretty snug and covering a window or door in order to effectively block freezing air from entering a home. For weeks we’ve dealt with being freezing on the couch by the door no matter how high both of us turn up the oil heating, until finally one day both of us knew what to do. We were shopping when my roommate realized both of us could just get a shower curtain tension rod and energy saving curtains. This way both of us could pull off this energy saving tip correctly… Sure enough, both of us now have no more drafts, and setting it up only took a few fourths. With this innovated set up, the lake house is so much warmer and our central heating program is cycling a lot less! 
The different types of thermostats