What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model T4A418GKD200 — 24V Coil with Shunt | Ships Today 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 Tempstar equipment which lists the model number T4A418GKD200 — 24V Coil with Shunt | Ships Today.

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.

Is this contactor compatible with Bryant or Payne systems too?

Many Tempstar parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Tempstar

Tempstar 1-Pole 30A Contactor for T4A418GKD200 — 24V Coil with Shunt | Ships Today

Name: Tempstar 1-Pole 30A Contactor for T4A418GKD200 — 24V Coil with Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 29.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This is a genuine OEM 1-pole definite-purpose contactor (OEM part number 1172472) for the Tempstar T4A418GKD200 condensing unit. The contactor is the electrically-controlled switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. Rated at 30 amps with a 24-volt coil and an integrated shunt, it carries the high-voltage load to the compressor while being safely triggered by the low-voltage control circuit. Common failure symptoms include a system that won't start, chattering or buzzing at the contactor, pitted or welded contacts, or an outdoor unit that runs continuously because the contacts have fused closed. Replacing a worn contactor restores reliable, clean switching and protects the compressor from voltage drops and arcing damage.

Specifications

Spec	Value
OEM Part Number	1172472
Type	Definite Purpose Contactor, 1-Pole with Shunt
Brand	Tempstar
Amp Rating	30 A
Coil Voltage	24 V
Poles	1
Fits Model	T4A418GKD200

Compatibility

Engineered as a direct-fit replacement for the Tempstar T4A418GKD200 air conditioner. This OEM contactor is also shared across many ICP/Heil/Tempstar/Comfortmaker condensing units that use part 1172472. Always confirm your unit's wiring matches a 1-pole, 24V-coil configuration before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and the breaker, then verify zero voltage at the contactor terminals with a multimeter.
Access — Remove the service panel from the condensing unit to expose the contactor.
Document — Photograph all line, load, and 24V coil wiring before disconnecting anything.
Remove — Label and disconnect the high-voltage line/load leads and the two low-voltage coil wires, then unscrew the old contactor from its bracket.
Install — Mount the new contactor, reconnect each wire to the matching terminal per your photo, and confirm the coil (24V) leads are on the coil terminals.
Test — Restore power, call for cooling, and verify the contactor pulls in cleanly with no chatter and the compressor and fan energize.

Signs You Need a Replacement

Outdoor unit fails to start when the thermostat calls for cooling.
Loud humming, buzzing, or chattering at the contactor.
Burned, pitted, or melted contacts visible on the terminals.
Compressor runs constantly because the contacts are welded closed.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.

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

Tempstar 1-Pole 30A Contactor fo...

$29.95

Frequently Asked Questions

Does this Contactor fit my Tempstar T4A418GKD200 — 24V Coil with Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar T4A418GKD200 — 24V Coil with Shunt | Ships Today. 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 Tempstar T4A418GKD200 — 24V Coil with Shunt | Ships Today?

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 Tempstar 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 Tempstar 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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