Serving ORIGINAL EQUIPMENT MANUFACTURERS with reliable products and expert technical advice for critical applications since 1935. FENWAL CONTROLS designs and manufactures industry leading agency approved critical control products. Fenwal serves OEMs in HVAC, commercial cooking, medical, RV, Industrial Equipment, Fire protection and many other markets. We are a global company offering products and technical support worldwide through a broad network of local representatives and distributors.

FENWAL Potted Controls

Fenwal Controls are available in potted versions to allow for greater moisture protection and durability. Ideal for use in outdoor environments, these potted controls ensure reliable performance up to 100% humidity and reduce issues caused by vibration or impact. Review our full line of gas ignition controls to meet your needs.

Temperature Sensing

Fenwal was founded on accurate, reliable Temperature Sensing, Control and Limiting. Our founding THERMOSWITCH® and Detect-A-Fire® products are still widely used today. Today Fenwal specializes in special configurations for unique applications in agriculture, transportation and commercial cooking.

FENWAL 35-40 Communications

The Fenwal Controls 35-40 gas ignition control offers two optional modes of transmitting data in addition to the LED and Alarm Out: a Universal Asynchronous Receiver Transmitter (UART) or a digital output signal. Adding these capabilities improves end-user notification and device functionality and serviceability.