I'm sorry I have to be a smart ass here.
You could always move to Alaska
See if something could have gotten in the heat box and jammed the door open. I had a heater door stick open once. found a pen in it. It must have got in through a vent before we got the car.
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Patrick
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*SOLD * 1971 LeMans street car, 428ci TH350 3:31 12 bolt, 3880#,13.6 @ 101.82 Show & go
1964 Tempest work in progress
400 with Tremec 5 speed
1967 LeMans drop top project. I tracked down my great grand father & dad's old car.