Window Film stops up to 97% infra red light, up to 83% of heat gain, and can greatly reduce heat loss during the winter months. Window film will lower energy bills, relieve stress on HVAC Systems, lowers energy costs year round, and can prevent overheating in your car. Your cars interior can be up to 60% cooler with window film. Window film can greatly reduce the damage caused by infra heat in your automobile, business and home.