distribution services in the field of energy conservation products; namely, metal and nonmetal doors; metal and nonmetal window frames; window panes; aluminum siding; vinyl and wood siding; residential and commercial security systems; furnaces; air conditioners; hot water tanks; home appliances; namely, gas and electric stoves, refrigerators, commercial and domestic cooking ovens, microwave ovens for cooking, clothes dryers, freezers, hoods for ranges, gas or electric fireplace inserts, comprised of andirons, artificial logs and artificial embers