Systems for monitoring appliances at a site, such as a household or business office. The appliances can include, for example but not limited to, an electric oven, dishwasher, refrigerator, laundry washer, freezer, pool controller, light bulb, microwave oven, computer, motor vehicle, television, telephone, etc. In many of the embodiments, the appliance has a computer based architecture or a controller that enables communication of data concerning the electronic appliance. In some embodiments the appliance is an apparatus with a radio frequency identification (RFID) tag or other passive device that can be interrogated for information concerning the appliance.