Field Controls CAS-2C Combustion Air System

Field Controls CAS-2C Combustion Air System delivers a reliable, code-compliant air supply for oil-fired appliances. This Type Combustion Air System is designed for use on oil burners, using fuel oil and supporting appliance inputs up to 2 GPH. The unit includes a 4 inch intake air hood, a 4 inch vacuum relief valve, and a field air boot to ensure steady, balanced airflow. UL listed for both Canada and the US, it helps meet safety, efficiency, and installation standards in residential and light commercial settings. Designed for straightforward installation and durable performance in demanding environments.

• Improves combustion efficiency and safety for oil burners
• Includes 4" intake hood and 4" vacuum relief valve for reliable air flow
• Field air boot enables balanced distribution of combustion air
• UL listed for installations in Canada and the United States
• Suitable for appliances with up to 2 GPH input