Carrier Global manufactures heating, ventilation, and air conditioning, refrigeration, and fire and security products. The HVAC business serves both residential and commercial markets (HVAC segment sales mix is 60% commercial and 40% residential). Carrier's refrigeration segment consists of its transportation refrigeration, Sensitech supply chain monitoring, and commercial refrigeration businesses. The firm's fire and security business manufactures fire detection and suppression, access controls, and intrusion detection products.