What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model T4A648GKA200 — 24V Coil with 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 T4A648GKA200 — 24V Coil with 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 T4A648GKA200 — 24V Coil with Shunt | Ships Today

Name: Tempstar 1-Pole 30A Contactor for T4A648GKA200 — 24V Coil with Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 36.00 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This OEM Tempstar contactor (part number 1172472) is a single-pole (1P), 30-amp electrical switch with a 24-volt control coil and integrated shunt. The contactor is the heart of your condensing unit's electrical system — when the thermostat calls for cooling, the 24V signal energizes the coil, pulling the contacts closed to deliver line voltage to the compressor and condenser fan motor. The built-in shunt provides a return path for low-voltage components. Over time, the contact points pit, burn, or weld from constant arcing, and the coil can fail. A failing contactor causes the outdoor unit to not start, to buzz or chatter, or to run continuously even after the thermostat is satisfied.

Specifications

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

Compatibility

Direct OEM fit for the Tempstar T4A648GKA200 condensing unit. This 1172472 contactor is also used across many ICP-family air conditioners and heat pumps (Tempstar, Heil, Comfortmaker) that specify a 1-pole 30A 24V definite-purpose contactor. Always verify your existing contactor's pole count, amp rating, and coil voltage before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and the breaker, then verify zero voltage with a multimeter before touching any wiring.
Access — Remove the condensing unit's electrical access panel.
Document — Photograph all wire connections before disconnecting anything.
Remove — Note line, load, and 24V coil terminal locations, transfer wires one at a time, and unscrew the old contactor from the bracket.
Install — Mount the new 1172472 contactor and reconnect each wire to the matching terminal per your photo.
Test — Restore power and confirm the contactor pulls in on a cooling call and the unit starts normally.

Signs You Need a Replacement

Outdoor unit won't start even though the thermostat is calling for cooling.
Loud buzzing, humming, or chattering from the contactor.
Pitted, burned, or welded contact points visible on inspection.
Compressor and fan keep running after the thermostat is satisfied.

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 1-Pole 30A Contactor fo...

$36.00

Frequently Asked Questions

Does this Contactor fit my Tempstar T4A648GKA200 — 24V Coil with Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar T4A648GKA200 — 24V Coil with 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 T4A648GKA200 — 24V Coil with 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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