What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model T2A318GKD100 – 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 T2A318GKD100 – 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 T2A318GKD100 – 1-Pole 30A 24V w/ Shunt | Ships Today

Name: Tempstar Contactor for T2A318GKD100 – 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 1-pole definite purpose contactor (Part No. 1172472) is the factory replacement for the Tempstar T2A318GKD100 condensing unit. Rated for 30 amps with a 24-volt coil and equipped with an integrated shunt, the contactor is the high-current switch that energizes the compressor and condenser fan motor on every cooling call. When the 24V coil is energized, its magnetic field closes the contacts and delivers line voltage to the outdoor unit; when the call ends, the contacts open and shut the system down. Constant cycling pits, oxidizes, and burns the contact surfaces over time, making a worn contactor one of the most common reasons an outdoor unit hums but will not start, chatters, or keeps running after the thermostat is satisfied.

Specifications

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

Compatibility

Designed as the OEM-correct contactor for the Tempstar T2A318GKD100 air conditioning condenser. The same 1-pole 30A 24V contactor is used across many ICP-family outdoor units (Heil, Comfortmaker). Verify your existing part's amp rating, pole count, and coil voltage before installing.

Installation Guide

Safety First – Disconnect power at the outdoor disconnect and breaker, then verify zero voltage at the contactor terminals with a multimeter.
Access – Remove the condenser control panel cover to expose the contactor.
Document – Photograph all line, load, and coil wiring before disconnecting.
Remove – Label and disconnect the wires, then unscrew the old contactor from the bracket.
Install – Mount the new contactor and reconnect each wire per your photo (line in, load to compressor/fan, 24V to coil).
Test – Restore power and call for cooling; confirm the contacts pull in cleanly and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit hums or buzzes but does not start.
Visible pitting, burning, or melted contacts.
Contactor chatters or fails to pull in on a cooling call.
System runs continuously from welded contacts.

Shipping & Returns

Ships same day on orders placed 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 T2A318GKD...

$32.95

Frequently Asked Questions

Does this Contactor fit my Tempstar T2A318GKD100 – 1-Pole 30A 24V w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar T2A318GKD100 – 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 T2A318GKD100 – 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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