Compare the three types of electricity usage monitor, measure your five biggest loads correctly, and work out what each appliance really costs to run.
Your air conditioner is probably the single biggest driver of your July electric bill. Most homeowners have no idea how much it actually costs per day — until the bill arrives. So, how many watts does an AC consume? A typical central air conditioner uses 3,000 to 5,000 watts while running, depending on the size,…