Profile: Biddle Air Systems Ltd. is a supplier of heating, ventilation, air conditioning, and air curtain products & solutions. We are an ISO 9001:2008 certified company. We have a variety of heating and ventilation products, comprising various sizes & styles of units suitable for different applications & types of projects. They are used in commercial and public buildings. Our Uniflow unit heaters operate with low, medium, high pressure hot water or steam. This means most existing factory or commercial units need no major or expensive capital installation before an effective heating solution is found. They are installed in a wide variety of locations ranging from factories and warehouses, to exhibition halls & showrooms.