What amp contactor do I need for my Lennox system?

The correct replacement for Lennox model OEM Lennox Contactor 2-Pole 30A 120V Coil — Y9372 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 Contactor 2-Pole 30A 120V Coil — Y9372.

My AC clicks but the compressor does not turn on. What is wrong?

Clicking from the outdoor unit without the compressor starting usually means a worn contactor. The contactor is the relay that sends power to the compressor. When its contacts are pitted or worn, it clicks but cannot establish a solid electrical connection. Other symptoms: visible pitting or burn marks on the contactor face, AC works intermittently, or buzzing from the contactor.

Lennox

OEM Lennox Contactor 2-Pole 30A 120V Coil — Y9372

Name: OEM Lennox Contactor 2-Pole 30A 120V Coil — Y9372
Brand: Lennox
SKU: LNX-Y9372
Price: 28.95 USD
Availability: InStock

SKU: LNX-Y9372 Brand: Lennox

$28.95 $38.95

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The genuine OEM Lennox Y9372 (Mars 17326) is a 2-pole, 30-amp contactor with a 120-volt control coil and factory lug terminals. It acts as the electrical switch that delivers line power to the compressor and condenser fan motor in your Lennox outdoor unit — when the 120V coil is energized by the control circuit, both poles close to power the unit and open again once the cooling demand is met. The lug terminals provide a secure, low-resistance connection for line and load wiring.

Common failure symptoms: Over time the Y9372 can suffer pitted or burned contacts and a coil that fails to pull in, especially given its high cycle count each season. Signs of trouble include an outdoor unit that hums but won't start, chattering or buzzing at the contactor, intermittent cooling, visible arcing across the contacts, overheated lug connections, or a compressor that won't shut off because the contacts have welded closed.

Why OEM matters: The factory Lennox Y9372 provides the exact 120V coil, 2-pole 30-amp rating, and lug terminal setup your equipment requires — note the 120V coil, which must match your control voltage exactly. OEM specification ensures dependable pull-in, proper heat handling, and a precise drop-in fit, protecting your compressor and preventing the premature failures common with generic replacements.

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 Contactor 2-Pole 30A ...

$28.95

Frequently Asked Questions

Does this Contactor fit my Lennox OEM Lennox Contactor 2-Pole 30A 120V Coil — Y9372?

Yes. This is the factory-specified OEM contactor for the Lennox OEM Lennox Contactor 2-Pole 30A 120V Coil — Y9372. 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 contactor on my Lennox OEM Lennox Contactor 2-Pole 30A 120V Coil — Y9372?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.

My AC clicks but the compressor won’t turn on. What’s wrong?

Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.

Is this contactor 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 contactor?

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 Contactor 2-Pole 30A 120V Coil — Y9372

Shipping Information

Return Policy

Frequently Asked Questions