Air duct cleaning services; Drain and sewer cleaning and rootering services; Installation and repair of heating, ventilating and air conditioning equipment; Installation and replacement service for water heaters; Installation of solar energy systems and alternative energy products for residential and commercial use; Installation, maintenance and repair of water filtration, softening, reverse osmosis, chemical feed pump, specialty cartridge and housing, water, and drain and sewer systems; Plumbing services; Repair or maintenance of gas water heaters; Installation and repair of air conditioning apparatus