 SAN FRANCISCO--BUSINESS WIRE--Halloween is near, so youd better beware of vampires. But it is not your blood these vampires are after its your energy bill. Vampire appliances lurk in your home, sucking up electricity day and night. This energy suck can add an extra 10 to your monthly utility bill, increasing the average American households annual electric bill by 100- 200. Pressing the off button on an appliance or electronic devices doesnt mean it stops drawing power. Energy vampire 