16D74 – TIME DELAY RELAY (LENNOX)

If your Lennox air handler blower shuts off too quickly after the system cycles, or doesn’t start when it should, the time delay relay controls that timing. This relay keeps the blower running for 45 seconds after the compressor shuts down to push remaining conditioned air through the ducts.

Specs: 24 VAC input, 1-second delay on make, 45-second delay on break, OEM Lennox

Replaces: 13W12, 16D74, 19W66, CT1S45

Fits: Lennox: CBX26UH-030-230-1 and similar air handler models.

Need help? See our AC Clicking But Not Starting Guide.

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• 13W12
• 16D74
• 19W66

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.

Fits these models

• CBX26UH-030-230-1