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Small rectangular HVAC fan control with flanged airstream mount and two terminals

Emerson Climate Technologies

Emerson 3F01-150 Snap Disc Fan Control HVAC control

SKU CH-FC58-5SE8Y

Regulates fan or blower operation with a 150 °F cut-in and 130 °F cut-out for quick on-job replacement

  • Closes at 150 °F to start the fan
  • Opens at 130 °F to stop the fan
  • SPST flanged airstream mount for direct airflow sensing
  • Mounting holes match standard 3/4" snap discs
  • Designed for quick on-job replacement

Snap Disc Fan Control 150°F Cut-In

The Emerson 3F01-150 regulates fan or blower operation in HVAC systems. It uses a SPST flanged airstream mount that closes on temperature rise. Designed for quick on-job replacement, it matches standard 3/4 inch snap disc mounting holes. This control automates airflow based on thermal conditions.

Suits 130/150°F Differential Needs

Technicians replacing a snap disc control with a 150 degree F cut-in and 130 degree F cut-out will find this a direct fit. It serves systems requiring automatic fan cycling within this specific temperature range. Installers needing a different temperature differential or a manual reset function must select an alternative control.

SPST Close-on-Rise Operation

The single specification that determines fit is the SPST close-on-rise switching action. The contacts close when the airstream reaches 150 degree F and open again at 130 degree F. This logic controls the fan circuit automatically without external power to the switch mechanism.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 93% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameEmerson

Questions about this item

Should I choose the 150 °F cut-in or the 130 °F cut-out version?

This single control combines both temperatures: the contacts close when the airstream reaches 150 °F and reopen once it falls to 130 °F, so no separate versions exist.

What does the 150 °F cut-in temperature mean once the control is installed in my furnace?

The fan will start only after the supply air hits 150 °F, preventing cold-air drafts, and will keep running until the air cools to 130 °F.

Is this a standard snap-disc interface that fits my existing bracket?

Yes — it uses the common 3/4-inch snap-disc mounting pattern and a flanged airstream design for direct replacement.

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