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Lennox

OEM Lennox 104284-01 Thermal Sequencer Relay DPDT 24V — 12J16

SKU: LNX-12J16 Brand: Lennox
$24.95 $34.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The Lennox 12J16, also identified as part number 104284-01, is a genuine OEM double-pole double-throw normally open thermal sequencer relay rated at 24 volts, featuring a 30–90 second delay-on and 1–30 second delay-off cycle for use in compatible Lennox electric heating systems. This thermal sequencer stages the electric heat elements in a controlled sequence, preventing excessive current draw at startup and ensuring even, efficient heating performance. If your Lennox electric furnace or air handler is experiencing uneven heating, tripped breakers at startup, or failure to energize heating elements in proper sequence, replacing this OEM thermal sequencer relay will restore correct staged operation.

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 Relay fit my Lennox OEM Lennox 104284-01 Thermal Sequencer Relay DPDT 24V — 12J16?
Yes. This is the factory-specified OEM relay for the Lennox OEM Lennox 104284-01 Thermal Sequencer Relay DPDT 24V — 12J16. 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 relay on my Lennox OEM Lennox 104284-01 Thermal Sequencer Relay DPDT 24V — 12J16?
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 relay?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this relay compatible with Bryant or Payne too?
Many Lennox 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 Lennox 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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Mike Rivera
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