What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model T4A624GKB100 – 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 T4A624GKB100 – 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 T4A624GKB100 – 1-Pole 30A 24V w/Shunt | Ships Today

Name: Tempstar Contactor for T4A624GKB100 – 1-Pole 30A 24V w/Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 24.00 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This is a genuine OEM single-pole definite purpose contactor (part number 1172472) for the Tempstar T4A624GKB100 heat pump. The contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling or heating. When the 24V control coil is energized, the contactor pulls in and closes a 30-amp set of line-voltage contacts; this model includes an integrated shunt for proper circuit routing. A failed contactor is one of the most common causes of an outdoor unit that will not start, that buzzes, or that runs continuously. Pitted, welded, or chattering contacts produce hard starts, low voltage at the compressor, and eventual compressor failure if left unaddressed.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor
Poles	1 (Single-Pole)
Contact Rating	30 Amps
Coil Voltage	24V
Features	With Shunt
Brand	Tempstar (ICP)
Fitment	OEM Replacement

Compatibility

This contactor is the factory-specified switch for the Tempstar T4A624GKB100 heat pump condensing unit. The same 1172472 contactor is shared across many ICP-family outdoor units (Tempstar, Heil, Comfortmaker), but always confirm your unit calls for a single-pole 30A, 24V coil contactor before installing.

Installation Guide

Safety First – Disconnect power at the outdoor disconnect and breaker, then verify zero voltage at the contactor with a multimeter.
Access – Remove the unit's electrical service panel.
Document – Photograph all line and low-voltage wiring before disconnecting anything.
Remove – Unscrew the contactor mounting screws, then transfer wires one at a time, or label and remove all leads from the old contactor.
Install – Mount the new contactor, reconnect line and 24V coil leads exactly per your photo, and confirm the shunt is positioned correctly.
Test – Restore power and verify the contactor pulls in and the compressor and fan start on a cooling call.

Signs You Need a Replacement

Outdoor unit hums or buzzes but compressor and fan do not start
Visibly burned, pitted, or melted contacts
Contactor chatters or fails to pull in on a thermostat call
Compressor runs continuously because contacts have welded shut

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 T4A624GKB...

$24.00

Frequently Asked Questions

Does this Contactor fit my Tempstar T4A624GKB100 – 1-Pole 30A 24V w/Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar T4A624GKB100 – 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 T4A624GKB100 – 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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