What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TXH518GKA100 — 1-Pole 30A 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 TXH518GKA100 — 1-Pole 30A 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 TXH518GKA100 — 1-Pole 30A 24V | Ships Today

Name: Tempstar Contactor for TXH518GKA100 — 1-Pole 30A 24V | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 24.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This OEM 1-pole 30A contactor with shunt (part #1172472) is the electrical switch that powers the compressor and outdoor fan on your Tempstar TXH518GKA100. When the thermostat calls for cooling or heating, the 24V control coil pulls the contactor's armature closed, sending line voltage to the compressor and condenser fan motor. The integrated shunt provides a continuous current path so the unit stays energized correctly through the cycle. Contactors are high-wear items: the contacts arc and pit every time they close, and over thousands of cycles they burn, weld shut, or chatter. A failing contactor causes a unit that won't start, a humming or buzzing condenser, or a compressor that runs continuously because the contacts have welded together.

Specifications

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

Compatibility

A direct OEM fit for the Tempstar TXH518GKA100 and shared ICP-family chassis sold under Heil, Comfortmaker, and Arcoaire badges. Verify the 1-pole 30A rating, the 24V coil voltage, and the with-shunt configuration against your existing contactor before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage at the contactor terminals with a multimeter.
Access — Remove the outdoor unit's electrical access panel.
Document — Photograph all line, load, and 24V coil wires before disconnecting.
Remove — Disconnect the wires, release the mounting screws, and lift out the old contactor.
Install — Mount the new contactor, then reconnect line, load, and 24V coil leads exactly per your photos.
Test — Restore power, run a cooling call, and confirm the contactor pulls in cleanly and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit hums or buzzes but the compressor and fan won't start.
Compressor runs nonstop because the contacts have welded closed.
Visible pitting, burning, or melted plastic on the contactor.
Chattering or intermittent operation when the thermostat calls.

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 TXH518GKA...

$24.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TXH518GKA100 — 1-Pole 30A 24V | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TXH518GKA100 — 1-Pole 30A 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 TXH518GKA100 — 1-Pole 30A 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.

Menu