What amp contactor do I need for my Lennox system?

The correct replacement for Lennox model OEM Lennox Contactor 2-Pole 30A 240V Coil — Y9374 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 240V Coil — Y9374.

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 240V Coil — Y9374

Name: OEM Lennox Contactor 2-Pole 30A 240V Coil — Y9374
Brand: Lennox
SKU: LNX-Y9374
Price: 28.95 USD
Availability: InStock

SKU: LNX-Y9374 Brand: Lennox

$28.95 $38.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The genuine OEM Lennox Y9374 (Mars 17327) is a 2-pole, 30-amp contactor with a 240-volt control coil and factory lug terminals for secure wiring. It switches line-voltage power to the compressor and condenser fan motor whenever your Lennox system calls for cooling — the 240V coil pulls both poles closed to energize the outdoor unit and releases them when the demand ends. The lug-style terminals make for a clean, dependable connection to line and load conductors.

Common failure symptoms: A failing Y9374 typically develops pitted, burned, or welded contacts and a coil that no longer pulls in reliably. Watch for an outdoor unit that hums without starting, loud buzzing or chattering, intermittent or lost cooling, visible arcing at the contacts, loose or overheating lug connections, or a compressor that stays energized because the contacts won't release.

Why OEM matters: Choosing the factory Lennox Y9374 guarantees the correct 240V coil, 2-pole 30-amp contact rating, and lug terminal configuration your system expects. OEM specification ensures reliable switching, proper heat dissipation, and a true drop-in fit — safeguarding your compressor and avoiding the miswiring and early failures that come with mismatched aftermarket parts.

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 240V Coil — Y9374?

Yes. This is the factory-specified OEM contactor for the Lennox OEM Lennox Contactor 2-Pole 30A 240V Coil — Y9374. 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 240V Coil — Y9374?

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.

Menu

OEM Lennox Contactor 2-Pole 30A 240V Coil — Y9374

Shipping Information

Return Policy

Frequently Asked Questions