Drafty House!

Don't get me wrong I love my older house but when its windy outside you can feel it inside.  I don't know why but the kitchen gets the coldest.  Again I don't know why?  The back door has one of those "slips" underneath the bottom and the windows have no areas where the wind is coming in.  Unfortunately there is a hold in the wall closer to the diningroom so that might be one of the reasons.  I want to patch it myself so I'm going to have to learn more about that.  Another contributing factor could be the radiator.  There was a time when the kitchen had no radiator at all and the new one that was installed is smaller than the regular cast iron radiators.  I have been told that a difference can be felt but I can't feel it.  Maybe I blocked it out?

This is the beginning of March and the warmer weather should be coming soon so that gives me some time to plan what I am going to do.