37 Electrician services, namely, residential and commercial electrical repairs, maintenance, installation and replacement of electric fixtures, electrical wiring, outlets, light fixtures, electrical panels, generators, sockets and switches; Installation, maintenance and repair of electrical systems; Generator repair and installation; Electrical contractor services; Television and appliance installation services; Installation, maintenance and repair of surge protection systems; Installation of electric vehicle chargers; Upgrading of electrical panels; Plumbing services; Plumbing inspection and diagnosis services; Commercial plumbing services; Emergency plumbing services; Drain and sewer cleaning and rootering services; Installation, maintenance, repair and replacement of plumbing fixtures, sump pumps, water heaters, and garbage disposals; Gas leak detection services; Slab leak detection and repair services; Installation, repair, maintenance and replacement of faucets, showers, bathtubs, toilets, sinks; Repairing leaks and breaks in water distribution pipes and sewage distribution pipes; Water treatment services, namely, installation of water softeners and water purification units; Outdoor and kitchen plumbing services; Repair of water wells; Repair, replacement and installation of sewer lines and water lines; Repair, replacement and installation of boilers; HVAC contractor services; Installation, repair, maintenance and replacement service for heating, ventilating and air conditioning systems; Emergency HVAC contractor services; HVAC diagnostics contractor services; Air conditioning system revitalization services; Air quality services, namely, duct cleaning and installation of air purifiers and thermostats; Furnace repair services; Ductwork cleaning, repair, installation and maintenance services; installation of thermostats; Heat pump repair and replacement services; Refrigerant repair and replacement; air duct sealing services; Repair of water leaks in building slabs; Repair of leaks in refrigerant systems