What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TXH542GKA100 — OEM 1172472 | 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 TXH542GKA100 — OEM 1172472 | 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 24V for TXH542GKA100 — OEM 1172472 | Ships Today

Name: Tempstar 1-Pole 30A Contactor 24V for TXH542GKA100 — OEM 1172472 | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 29.00 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This is the OEM 1-pole 30A definite-purpose contactor with 24V coil and shunt (part 1172472) for the Tempstar TXH542GKA100. The contactor is the electrically operated switch that energizes the compressor and outdoor fan whenever the thermostat calls. A 24V signal pulls the contactor in, closing the 30A line-voltage contacts. Over time the contacts pit, weld, or chatter, and the coil can open — leaving the outdoor unit dead or running when it shouldn't. The factory single-pole, 30-amp rating with the integrated shunt matches the original load and wiring exactly.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor
Brand	Tempstar
Poles	1-Pole
Contact Rating	30A
Coil Voltage	24V
Feature	With shunt
Fitment	OEM direct replacement

Compatibility

Direct replacement for the Tempstar TXH542GKA100 and shared ICP/Heil condensing units using a 1-pole 30A 24V contactor. Verify pole count, amp rating, and coil voltage against the existing part before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
Access — Remove the electrical panel cover on the outdoor unit.
Document — Photograph every line, load, and 24V coil wire before removing.
Remove — Transfer wires one at a time, or unbolt the old contactor and move connections to the new one to avoid errors.
Install — Mount the new contactor, land the line/load and 24V coil leads per your photo, and confirm the shunt wiring matches.
Test — Restore power, call for cooling, and verify the contactor pulls in cleanly with no chatter.

Signs You Need a Replacement

Outdoor unit won't start or won't shut off
Loud buzzing or chattering from the contactor
Pitted, burnt, or welded contacts
Open 24V coil (no continuity)

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 24...

$29.00

Frequently Asked Questions

Does this Contactor fit my Tempstar TXH542GKA100 — OEM 1172472 | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TXH542GKA100 — OEM 1172472 | 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 TXH542GKA100 — OEM 1172472 | 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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