Fenwal

Fenwal Controls components power furnaces, radiant heaters, rooftop units, and more —built for real-world HVAC applications. With ignition methods like direct spark, intermittent pilot, and hot surface ignition—including models capable of handling over 400K BTU—Fenwal covers a wide range without overcomplicating the setup. The THERMOSWITCH® temperature controllers and Snap-Disc Hi-Limit thermostats are trusted tools in systems where downtime isn’t an option.
The PIM® Control modulates heat output to match demand and syncs with Building Management Systems to fine-tune performance. Designed for unification across HVAC platforms, the control logic does the heavy lifting so the system doesn’t have to. Fenwal works closely with design teams using in-house tools like the Applications Lab and LabView® Development Interface to test, adapt, and improve system performance in context —not just in theory.