Fan Delay Timer 24V | NBK-21055

NBK-21055 – Fan Delay Timer 24V  The NBK-21055 Fan Delay Timer 24V provides precise control over blower fan operation in HVAC and greenhouse heating systems. By delaying fan startup and extending post-burn operation, it ensures the heat exchanger reaches optimal temperature before air circulation begins—enhancing energy efficiency and protecting system components from premature wear. Key Features: • Optimized Blower Operation: Delays fan start-up until the heat exchanger is warm, preventing cold air discharge • Energy Efficient: Keeps blower running briefly after burner shutdown to use remaining heat • OEM-Equivalent Performance: Matches factory specifications for smooth replacement and dependable operation • Compact 24V Design: Integrates seamlessly with most standard heating control circuits 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 worn or defective delay timer can cause inefficient heating, short cycling, or premature blower wear. Installing a new NBK-21055 restores proper timing, ensures warm air delivery, and improves both energy efficiency and comfort.