What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model T2A318GKA100 — 24V Coil | 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 T2A318GKA100 — 24V Coil | 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 1-Pole 30A Contactor for T2A318GKA100 — 24V Coil | Ships Today

Name: Tempstar 1-Pole 30A Contactor for T2A318GKA100 — 24V Coil | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 32.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This OEM Tempstar Contactor (part 1172472) is a 1-pole, 30 amp relay with a 24V coil and integrated shunt that switches line power to the compressor and condenser fan on your T2A318GKA100 unit. On a cooling call the 24V coil closes the contacts to energize the outdoor components. With repeated cycling the contacts pit, burn, or weld, and the coil can open — causing a unit that won't start, buzzes, chatters, or won't shut off. Installing the exact OEM 30A contactor restores dependable switching and protects downstream components.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor (with shunt)
Poles	1-Pole
Contact Rating	30 Amp
Coil Voltage	24V
Brand	Tempstar (ICP / Heil family)
Fitment	OEM direct replacement

Compatibility

Direct-fit replacement for the Tempstar T2A318GKA100 condensing unit. The same 1-pole 30A 24V contactor (part 1172472) also fits many ICP-family outdoor units, including matching Heil, Comfortmaker, and ICP models. Verify pole count, amp rating, and 24V coil against your existing contactor before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter before touching the wiring.
Access — Remove the condensing unit service panel to expose the contactor.
Document — Photograph all line, load, and 24V coil connections before disconnecting.
Remove — Transfer wires one at a time or label them, unscrew the old contactor from its bracket, and remove it.
Install — Mount the new 1172472 contactor and reconnect each wire to the matching terminal per your photos.
Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly and the unit runs without chatter.

Signs You Need a Replacement

Compressor and fan won't energize on a cooling call
Buzzing, chattering, or humming from the contactor
Pitted, burnt, or welded contacts that won't release
Unit keeps running after the thermostat is satisfied

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 1-Pole 30A Contactor fo...

$32.95

Frequently Asked Questions

Does this Contactor fit my Tempstar T2A318GKA100 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar T2A318GKA100 — 24V Coil | 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 T2A318GKA100 — 24V Coil | 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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