I've been running mine for about a month. Depends on your house, how much it traps heat, etc. Really it's besides the point - you might not need a plunger to u

I've been running mine for about a month. Depends on your house, how much it traps heat, etc. Really it's besides the point - you might not need a plunger to unclog the toilet or a fire extinguisher or a first aid kit often, but when you do, you really need it!