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National HVAC Parts

Universal Time Delay Relay — HVAC Fan Delay On/Off Control

SKU: NHVAC-RLY-DELAY Brand: National HVAC Parts
$19.99 $29.99

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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Universal adjustable time delay relay for HVAC fan control. Provides configurable delay-on-make and delay-on-break timing to prevent cold air blow in heating mode and extract residual cooling after compressor shutdown.

  • Type: Adjustable Time Delay Relay
  • Voltage: 24V AC coil
  • Delay: Adjustable 10-180 seconds
  • Warranty: 1-year

Install difficulty: 2/5 — Power off, swap relay, reconnect wires. 10-15 min.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $75
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Time Delay Relay fit my National HVAC Parts Universal Time Delay Relay — HVAC Fan Delay On/Off Control?
Yes. This is the factory-specified OEM time delay relay for the National HVAC Parts Universal Time Delay Relay — HVAC Fan Delay On/Off Control. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the time delay relay on my National HVAC Parts Universal Time Delay Relay — HVAC Fan Delay On/Off Control?
Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.
What symptoms mean I need a new time delay relay?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this time delay relay compatible with Bryant or Payne too?
Many National HVAC Parts parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my National HVAC Parts time delay relay?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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