I am tired
No, no, no... Not meant that way.. :banghead:
You can't "re" do something that you haven't already done. You have to do it first before you can re-do it... :???:
Re-circulate air.. You can't re-circulate the air unless you've already circulated it first... #-o
Re-frigerate air... You can't re-frigerate air unless you've frigerated it first... #-o
Etc... :D