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Combustion Air System CAS-34U
Combustion Air System CAS-34U
Combustion Air System CAS-34U

Highlights of the CAS-34U Combustion Air System

  • SAVES TIME: Designed for use in a confined space
  • EFFICIENT: Delivers combustion air for mechanical rooms, boiler rooms, or furnaces
  • OPERATION: For use with oil or gas applications

Features of the CAS-34U Combustion Air System

Enhance the performance and efficiency of your oil, natural gas, or LP burning furnace, water heater, or boiler with the state-of-the-art CAS-34U combustion air system. Building upon the success of renowned CAS-3 and CAS-4 units, the CAS-34U is designed to revolutionize your heating experience.

Unleash the Power of Universal Compatibility

The CAS-34U is a universal combustion air system, compatible with both 120VAC and 24VAC control systems. Regardless of your existing setup, this versatile unit seamlessly integrated with your appliances, providing a reliable and efficient source of combustion air.

Unrivaled Flexibility

With the CAS-34U, the possibilities are endless. It can be effortlessly combined with a 30mV or thermopile smart valve gas water heater by utilizing the optional CK-20FV series control kit, expanding its utility and value. Moreover, you can connect additional 120V or 24V controlled appliances by incorporating the CAC-120 or CAC-24 multiple appliance controls (one kit per additional appliance) maximizing its potential.

Efficient Air Distribution

Say goodbye to inefficient airflow and welcome the CAS-34U’s superior air distribution system. Through its innovative design, this combustion air system draws air mechanically into the structure and disperses it near the combustion or intake of your appliances. Enjoy optimized combustion and improved performance like never before.

Reliable Performance, Uncompromising Quality

Crafted with meticulous attention to detail, the CAS-34U combines robust construction with advanced technology. Rest assured that this combustion air system is built to withstand the test of time, providing you with years of dependable performance and peace of mind.

Upgrade your Heating System Today

Don’t let outdated combustion air systems hold back your heating equipment. Embrace the future with the CAS-34U. Experience enhanced efficiency, improved air distribution, and unparalleled compatibility. Elevate your heating experience to new heights with this exceptional combustion air system.

The CAS-34U Combustion Air System should be installed by a licensed contractor. Find a contractor in your area.

Specifications of the CAS-3 Combustion Air Systems

Part Number Model Fuel Appliance Input Volts Amps Hz Maximum Load Speed
603400700 CAS-34U Oil or Gas Up to 3.5 GPH Oil
Up to 450,000 BTU Gas
120 0.8 60 2600 RPM


Combustion Air System Certification

cETL listed for oil and gas heating equipment.

Intertek CETL Logo


Customer Service Rep


2630 Airport Road
Kinston, NC 28504

Additional Fan in a Can Options

Combustion Air System CAS-1
Combustion Air System CAS-1
CAS-2B & CAS-2C Combustion Air System
Combustion Air Systems CAS-2B-&-CAS-2C
Cas-4 Fan In A Can, Combustion Air System
Combustion Air System CAS-4
Combustion Air System CAS-34U
CAS-34U Combustion Air System
Combustion Air Systems CAS-6
Combustion Air System CAS-6
Control Kits For Power Venter Fan In A Can
Control Kit
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