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.

DETECT-A-FIRE® Test Procedures

In accordance with NFPA guidelines, the following procedures allow you to quickly determine the reliability of your heat detectors using four tactics: Visual inspection, operational verification, functional test and calibration verification. Click to learn more.

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.

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.