What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TXA642GKA100 — 1-Pole 30A 24V w/ 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 TXA642GKA100 — 1-Pole 30A 24V w/ 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 TXA642GKA100 — 1-Pole 30A 24V w/ Shunt | Ships Today

Name: Tempstar Contactor for TXA642GKA100 — 1-Pole 30A 24V w/ 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 the genuine OEM 1-pole, 30-amp contactor with a 24-volt coil and shunt (part #1172472) for the Tempstar TXA642GKA100 condensing unit. The contactor is the high-voltage switch that powers the compressor and condenser fan whenever the thermostat calls for cooling; energizing the 24V coil pulls the contacts closed, while the shunt provides the dedicated path for the run capacitor / fan circuit. Because the contacts arc on every cycle, contactors are a high-wear part that eventually pits, welds shut, or fails to pull in. Symptoms include a unit that won't start, chattering or buzzing at the contactor, visibly burnt or pitted contacts, or a compressor that keeps running after the cooling call ends.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor, 1-Pole
Brand	Tempstar
Contact Rating	30 Amps
Coil Voltage	24V
Poles	1
Feature	Includes Shunt

Compatibility

Direct OEM replacement for the Tempstar TXA642GKA100 outdoor unit. The same 1-pole 30A 24V contactor is shared across many ICP / Heil / Comfortmaker condensers built on the TXA platform. Verify the amp rating, coil voltage, and pole count against your existing contactor before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage across the contactor terminals with a multimeter.
Access — Remove the outdoor unit's electrical service panel.
Document — Photograph every wire and terminal position before disconnecting.
Remove — Move each wire one at a time to the new contactor, or unbolt the old contactor and transfer the leads exactly per your photo.
Install — Mount the new 1-pole 30A contactor, land the line and load conductors, and connect the 24V coil leads.
Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly and the compressor and fan energize.

Signs You Need a Replacement

Outdoor unit won't start on a cooling call
Loud chattering, buzzing, or humming at the contactor
Visibly burnt, pitted, or welded contacts
Compressor keeps running after the thermostat is satisfied (stuck 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 TXA642GKA...

$32.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TXA642GKA100 — 1-Pole 30A 24V w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TXA642GKA100 — 1-Pole 30A 24V w/ 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 TXA642GKA100 — 1-Pole 30A 24V w/ 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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