Air conditioning vent sealing services; Contractor services, namely, review of and remedial recommendations for building plumbing, electrical and mechanical systems for others; HVAC duct cleaning services; Installation of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Installation of HVAC systems; Installation of insulating materials; Installation of insulating materials in buildings, roofs and structures; Installation of plumbing; Installation of...

Air conditioning vent sealing services; Contractor services, namely, review of and remedial recommendations for building plumbing, electrical and mechanical systems for others; HVAC duct cleaning services; Installation of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Installation of HVAC systems; Installation of insulating materials; Installation of insulating materials in buildings, roofs and structures; Installation of plumbing; Installation of...