What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model T4A342GKD100 — 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 T4A342GKD100 — 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 T4A342GKD100 — 1-Pole 30A 24V w/Shunt | Ships Today

Name: Tempstar Contactor for T4A342GKD100 — 1-Pole 30A 24V w/Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 32.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This genuine OEM single-pole contactor (part number 1172472) is the electromagnetic switch that energizes the compressor and condenser fan motor in your Tempstar T4A342GKD100 air conditioning condenser. Rated for 30 amps with a 24-volt control coil and an integrated shunt, it closes the line-voltage circuit whenever the thermostat calls for cooling. A failing contactor is one of the most common no-cool service calls: contacts pit, weld, or chatter over thousands of cycles, leaving the outdoor unit dead, humming, or running when it should be off. Replacing it restores reliable, clean switching and protects the more expensive components downstream.

Specifications

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

Compatibility

Engineered as the factory replacement for the Tempstar T4A342GKD100 condensing unit. The same 1172472 contactor is shared across many ICP-family Tempstar, Heil, and Comfortmaker single-stage condensers using a 30A, 24V control circuit. Always confirm your existing contactor's amp rating and coil voltage before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage across the line terminals with a multimeter.
Access — Remove the condenser service panel to expose the control box.
Document — Photograph every wire and terminal before disconnecting anything.
Remove — Label and pull the line, load, and 24V coil leads, then unscrew the old contactor from the bracket.
Install — Mount the new contactor, transfer wiring exactly per your photo, and confirm the shunt connection.
Test — Restore power, call for cooling, and verify the contacts pull in cleanly with no chatter.

Signs You Need a Replacement

Outdoor unit hums or buzzes but the compressor and fan won't start.
Burned, pitted, or visibly welded contact points.
Unit runs continuously or won't shut off when cooling is satisfied.
Chattering or rapid clicking from the contactor when the thermostat calls.

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 Contactor for T4A342GKD...

$32.95

Frequently Asked Questions

Does this Contactor fit my Tempstar T4A342GKD100 — 1-Pole 30A 24V w/Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar T4A342GKD100 — 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 T4A342GKD100 — 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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