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Small rectangular HVAC control module with terminals and adjustment dials

SUPCO

SUPCO BC7070 Time Delay Blower Control HVAC Control

SKU CH-BM19-BCV6W

Delays the blower fan on and off cycles to increase heating efficiency with adjustable timing up to 240 seconds

  • Delays blower fan cycles to increase heating efficiency
  • Adjustable blower on delay from 0 to 240 seconds
  • Adjustable blower off delay from 0 to 240 seconds
  • Operates on 24 VAC control voltage for standard HVAC systems
  • SPST relay contacts provide simple on/off switching control

Direct Replacement for F7070

The SUPCO BC7070 time delay blower control replaces the A-1 Components F7070 unit. It manages the blower fan cycle in HVAC systems to increase heating efficiency. Installers use it on equipment requiring a direct drop-in control board.

24 VAC Control Voltage Limits

The control operates on a 24 VAC supply and uses SPST relay contacts for switching. Both the blower on time and off time are adjustable between 0 and 240 seconds. The fixed voltage rating defines the only compatible control circuit.

Adjustable Timing for Daily Operation

Technicians set the delay periods using the onboard adjustment range to match system requirements. The SPST contacts handle the blower load within the specified voltage. Correct calibration ensures the fan runs only as long as needed each cycle.

How it compares

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

Price $44.99
Typical for this category: the median of 1,762 items is $45.99.

Specifications

Product
Brand nameSupco

Questions about this item

How do I decide between the BC7070 and the F7070 it replaces?

The BC7070 is the direct replacement for the F7070 and offers adjustable blower on and off delays from 0 to 240 seconds, so choose it when you need that timing flexibility.

What does the 240-second adjustable delay do for my furnace?

It lets you set how long the blower runs after the burner shuts off and how long it waits before starting, which can improve heat distribution and reduce cold-air drafts.

Will the 24 VAC control voltage work with my existing thermostat wiring?

Yes, the control operates on standard 24 VAC thermostat circuits and uses a single-pole single-throw relay to switch the blower line.

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