What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TSH518GKA100 — 30A 1-Pole 24V | 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 TSH518GKA100 — 30A 1-Pole 24V | 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 TSH518GKA100 — 30A 1-Pole 24V | Ships Today

Name: Tempstar Contactor for TSH518GKA100 — 30A 1-Pole 24V | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 22.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This is a genuine OEM 30-amp single-pole definite purpose contactor with shunt (part number 1172472) for the Tempstar TSH518GKA100 heat pump. The contactor is the heavy-duty switch that energizes the compressor and outdoor fan whenever the 24V coil is signaled by the thermostat. The integrated shunt provides a defined current path for the device's rated load. Rated at 30A with a 24V coil, this 1-pole contactor is designed for high-cycle reliability in residential condensing units. Worn or burned contacts cause hard starting, buzzing, or a unit that runs continuously, while an open coil leaves the outdoor unit completely dead on a call for cooling.

Specifications

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

Compatibility

Direct-fit replacement for the Tempstar TSH518GKA100 condensing unit, and widely interchangeable across ICP, Heil, and Comfortmaker outdoor units that specify a 30A 1-pole contactor with a 24V coil. Confirm the existing part number, amp rating, and coil voltage before installing.

Installation Guide

Safety First — Disconnect power at the disconnect and main breaker, then verify zero voltage with a multimeter.
Access — Remove the condensing unit service panel to expose the contactor.
Document — Photograph all line and 24V coil wire positions before disconnecting.
Remove — Disconnect the L1/L2 line leads and the two coil leads, then unscrew the old contactor from its bracket.
Install — Mount the new contactor, transfer the wires exactly per your photo, and tighten the terminals.
Test — Restore power and call for cooling; confirm the contactor pulls in cleanly and the unit starts without chatter.

Signs You Need a Replacement

Humming, buzzing, or chattering at the outdoor unit
Pitted, burned, or welded contacts
Compressor runs nonstop even when satisfied
No outdoor unit operation on a cooling call

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 TSH518GKA...

$22.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TSH518GKA100 — 30A 1-Pole 24V | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TSH518GKA100 — 30A 1-Pole 24V | 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 TSH518GKA100 — 30A 1-Pole 24V | 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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