It takes more than a wooden stake to kill a vampire.
Vampires are very popular these days, in movies, TV and in your home.  A house vampire is any appliance, electronic or convenience device that stays plugged in all the time. If it has a small light on all the time, it's a vampire.
Don't call Buffy, just put that programmable timer to better use by plugging in your energy-sucking device. It probably doesn't need to be connected 24/7. Set the timer to a limited schedule and save yourself some serious money.