What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model T4H548GKB100 — 24V Coil 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 T4H548GKB100 — 24V Coil 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 1-Pole 30A Contactor for T4H548GKB100 — 24V Coil w/ Shunt | Ships Today

Name: Tempstar 1-Pole 30A Contactor for T4H548GKB100 — 24V Coil w/ Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 27.00 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This genuine OEM single-pole contactor (part number 1172472) switches high-voltage power to the compressor and outdoor fan on the Tempstar T4H548GKB100. Rated at 30 amps with a 24V coil and an integrated shunt, the contactor pulls in when the thermostat sends a 24V call, closing its contacts to energize the unit. Over time the contacts pit, burn, and weld from arcing, or the coil opens and the contactor stops pulling in. A failed contactor is one of the most common reasons an outdoor unit won't start — or won't shut off when contacts weld closed.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor
Brand	Tempstar
Poles	1-Pole
Contact Rating	30A
Coil Voltage	24V
Feature	Includes Shunt
Fitment	OEM Direct Replacement

Compatibility

Direct OEM fit for the Tempstar T4H548GKB100 and related ICP-family outdoor units (Heil, Comfortmaker) using a 1-pole 30A/24V contactor. Confirm pole count, amp rating, and coil voltage match your existing contactor before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, and verify zero voltage with a multimeter.
Access — Remove the outdoor unit's electrical access panel.
Document — Photograph all line, load, and 24V coil connections before disconnecting.
Remove — Label and remove each wire, then unscrew and lift out the old contactor.
Install — Mount the new 1172472 contactor and reconnect every lead exactly per your photos, confirming the 24V coil leads are correct.
Test — Restore power and verify the contactor pulls in on a thermostat call and that the compressor and fan energize.

Signs You Need a Replacement

Outdoor unit won't start on a cooling or heating call
Buzzing or chattering contactor that won't fully pull in
Pitted, burnt, or welded contacts visible on inspection
Unit won't shut off because contacts are stuck closed

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. 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...

$27.00

Frequently Asked Questions

Does this Contactor fit my Tempstar T4H548GKB100 — 24V Coil w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar T4H548GKB100 — 24V Coil 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 T4H548GKB100 — 24V Coil 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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