What are the specs for this Relay?

The correct replacement for Lennox model OEM Lennox Relay — 20G52 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Lennox equipment which lists the model number OEM Lennox Relay — 20G52.

What symptoms indicate I need a new relay?

Common symptoms that indicate you need a new relay include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

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Lennox

OEM Lennox Relay — 20G52

Name: OEM Lennox Relay — 20G52
Brand: Lennox
SKU: LNX-20G52
Price: 24.95 USD
Availability: InStock

SKU: LNX-20G52 Brand: Lennox

$24.95 $34.95

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The genuine OEM Lennox 20G52 relay is an electromechanical switching component used to control power to major loads within your Lennox HVAC system, such as the blower motor, heating elements, or accessory circuits. A low-voltage signal from the control board or thermostat energizes the relay coil, closing high-current contacts to safely switch the load on and off without overloading the control circuitry.

Common failure symptoms: When the 20G52 relay fails, you may notice the blower or heating stage not engaging, intermittent operation, a chattering or buzzing sound from the control area, or a system that won't respond to thermostat calls. Pitted or burned contacts, a weak coil, or welded contacts that stay closed are typical failure modes and can leave a component stuck on or completely dead.

Why OEM matters: The Lennox 20G52 relay is rated for the specific coil voltage, contact amperage, and switching duty of your equipment. Installing the factory-matched relay ensures reliable contact life and correct sequencing within the control logic. Generic relays with mismatched ratings can fail prematurely, cause erratic operation, or damage connected components. Choose genuine OEM for dependable, long-lasting switching performance.

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

OEM Lennox Relay — 20G52

$24.95

Frequently Asked Questions

Does this Relay fit my Lennox OEM Lennox Relay — 20G52?

Yes. This is the factory-specified OEM relay for the Lennox OEM Lennox Relay — 20G52. 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 Relay — 20G52?

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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OEM Lennox Relay — 20G52

Shipping Information

Return Policy

Frequently Asked Questions