Fan Delay Timer 24V | NBK-21055

NBK-21055 – Fan Delay Timer 24V – Special Order

The NBK-21055 Fan Delay Timer 24V is designed to control the operation of blower fans in HVAC and greenhouse heating systems. By delaying the blower start or shutdown, this control ensures that the heat exchanger is adequately warmed before air is circulated, improving efficiency and extending the lifespan of the system.

⚠️ SPECIAL ORDER NOTICE: This is a special order product sourced from NBK, requiring 1–2 extra business days for processing.

Key Features:
✅ Optimized Blower Operation: Delays fan start-up to allow the heat exchanger to warm, preventing cold air blasts into the space
✅ Energy Efficient: Continues running briefly after burner shutdown to utilize residual heat
✅ OEM-Equivalent Performance: Matches specifications of factory-installed delay timers for seamless replacement
✅ Compact 24V Design: Integrates easily into existing control circuits of many heating systems

Specifications:
📌 SKU: 21055
📌 Category: HVAC / Fan Delay Timer
📌 Description: NBK-21055 Fan Delay Timer 24V
📌 Voltage: 24V
📌 Equivalent To:

• Modine 4034110

• Modine 5H0730350000

• 5H73035

• 5H71627

• 5H71627B

• 3H32722

• 5H602054

• 5H602054-1

Why Replace Your Fan Delay Timer:
A faulty fan delay timer can lead to inefficient heating cycles and unnecessary energy use. Replacing it with the NBK-21055 ensures your system operates as designed, delivering warm air only when ready and preventing excessive wear on components.

Shipping & Availability:
Please note this is a special order item from NBK. Expect an additional 1–2 business days for processing.