What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model T2A342GKA100 — 1-Pole 30A 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 T2A342GKA100 — 1-Pole 30A 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 Contactor for T2A342GKA100 — 1-Pole 30A 24V Coil with Shunt | Ships Today

Name: Tempstar Contactor for T2A342GKA100 — 1-Pole 30A 24V Coil with Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 32.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This is a genuine OEM single-pole definite-purpose contactor (part number 1172472) for the Tempstar T2A342GKA100 air conditioning condensing unit. The contactor is the electromechanical switch that energizes the compressor and outdoor condenser fan motor whenever the thermostat calls for cooling. A 24-volt signal energizes the coil, the magnetic field pulls in the armature, and the 30-amp contacts close to deliver line voltage to the compressor. This unit is rated 30 amps with a 24V coil and includes a factory shunt for correct single-pole operation. Pitted, burned, or welded contacts are among the most common no-cool failures — symptoms include chattering, hard starting, intermittent cooling, or a compressor that will not run at all.

Specifications

Spec	Value
OEM Part Number	1172472
Type	Definite Purpose Contactor, Single-Pole (1P)
Brand	Tempstar
Contact Rating	30 Amps
Coil Voltage	24 VAC
Poles	1 (with shunt)
Fits Model	T2A342GKA100

Compatibility

A direct OEM replacement for the Tempstar T2A342GKA100 condensing unit. Contactor 1172472 is also used across many ICP-family outdoor units, including matching Heil, Comfortmaker, and Tempstar split-system condensers in the 1.5–4 ton range that use a single-pole 24V/30A contactor. Verify the existing contactor's pole count, coil voltage, and amp rating before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and main breaker, then verify zero voltage at the contactor terminals with a multimeter.
Access — Remove the condenser service panel to reach the electrical compartment.
Document — Photograph every wire connection before disconnecting.
Remove — Label and disconnect the line, load, and 24V coil leads, then unscrew the old contactor from its bracket.
Install — Mount the new contactor, reconnect each wire per your photo, and confirm the shunt and coil leads are seated.
Test — Restore power, call for cooling, and verify the contactor pulls in cleanly with the compressor and fan running.

Signs You Need a Replacement

Chattering, buzzing, or humming from the condenser when cooling is called.
Compressor and fan won't start despite a cooling call at the thermostat.
Burned, pitted, melted, or welded contacts on inspection.
Unit short-cycles or sticks on because the contacts 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 Contactor for T2A342GKA...

$32.95

Frequently Asked Questions

Does this Contactor fit my Tempstar T2A342GKA100 — 1-Pole 30A 24V Coil with Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar T2A342GKA100 — 1-Pole 30A 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 T2A342GKA100 — 1-Pole 30A 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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