In this video i am showing how to add a killer switch (on/off switch) to your furnace.

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0:00 intro
0:11 what you need
0:39 type of switch
1:37 checking for voltage
2:02 junction box
7:38 adding switch box
11:59 a little problem
12:26 hood engineered diagram
17:21 wiring
19:17 switch installed
19:26 recap