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Installation, maintenance and repair of solar energy systems and alternative energy products for residential and commercial use; Installation, maintenance and repair of solar electric battery apparatus system, and consulting related thereto, for the storage and discharge of electricity; Installation, repair and replacement of heating and air conditioning units and systems, thermostats, furnaces, air filtration systems, home security systems, wireless local area network hardware and internet computer hardware systems, home theater systems, central vacuum systems, plumbing systems, solar energy systems, alternative energy products, solar electric battery apparatus systems, and accessories therefor; Maintenance and repair of heating and air conditioning units and systems, thermostats, furnaces, air filtration systems, home security systems, wireless local area network hardware and internet computer hardware, home theater systems, central vacuum systems, plumbing systems, solar energy systems, alternative energy products, solar electric battery apparatus systems, and accessories therefor