What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TSH542GKA100 — 24V Coil 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 TSH542GKA100 — 24V Coil 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 1-Pole 30A Contactor for TSH542GKA100 — 24V Coil w/ Shunt | Ships Today

Name: Tempstar 1-Pole 30A Contactor for TSH542GKA100 — 24V Coil w/ Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 29.00 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This OEM 1-pole 30-amp contactor (part 1172472) with a 24V coil and integrated shunt is the relay that switches line-voltage power to the compressor and condenser fan in your Tempstar TSH542GKA100. When the thermostat calls for cooling, the 24V coil pulls the contacts closed and energizes the outdoor unit. Pitted, welded, or chattering contacts are one of the most common no-cool failures — they cause the unit to fail to start, hum without engaging, or run intermittently.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor
Brand	Tempstar (ICP/Heil)
Poles	1-Pole
Contact Rating	30A
Coil Voltage	24V
Feature	Integrated Shunt

Compatibility

Direct OEM fit for the Tempstar TSH542GKA100 and shared ICP/Heil/Comfortmaker condensing units using a 1-pole 30A definite-purpose contactor with a 24V coil. Verify your existing coil voltage and amp rating before installing.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker; verify zero voltage with a multimeter.
Access — Remove the condenser unit's electrical access panel.
Document — Photo all line, load, and 24V coil wiring before disconnecting.
Remove — Transfer wires one at a time, or label them, then unscrew the old contactor from the bracket.
Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
Test — Restore power, call for cooling, and confirm the contactor pulls in and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit hums but compressor/fan won't start
Visibly pitted, burned, or welded contacts
Chattering or buzzing contactor
Intermittent cooling or unit that won't shut off

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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...

$29.00

Frequently Asked Questions

Does this Contactor fit my Tempstar TSH542GKA100 — 24V Coil w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TSH542GKA100 — 24V Coil 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 TSH542GKA100 — 24V Coil 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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