What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TXA649GKA100 — 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 TXA649GKA100 — 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 30A 1-Pole Contactor for TXA649GKA100 — 24V Coil w/ Shunt | Ships Today

Name: Tempstar 30A 1-Pole Contactor for TXA649GKA100 — 24V Coil w/ Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 28.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This OEM 1-pole, 30 Amp contactor with shunt (part number 1172472) is the main switching relay for the Tempstar TXA649GKA100 condensing unit. A 24-volt signal from the thermostat energizes the coil, closing the contact to deliver line voltage to the compressor and condenser fan. The integrated shunt maintains a circuit path on the unswitched leg, a common single-pole design in residential condensing units. Rated at 30A with a 24V coil, it handles the unit's inrush and running load. Failure shows up as a unit that hums but won't start, burnt or pitted contacts, chattering on cycle, or a compressor that runs continuously because the contact has welded shut.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor (w/ Shunt)
Brand	Tempstar
Current Rating	30 Amps
Coil Voltage	24V
Poles	1-Pole
Application	AC Condenser / Compressor

Compatibility

Direct OEM replacement for the Tempstar TXA649GKA100 condensing unit. This 1-pole 30A 24V contactor with shunt is also used on many ICP-family outdoor units (Heil, Comfortmaker, Tempstar). Match the amp rating, pole count, coil voltage, and shunt configuration to your existing part before installing.

Installation Guide

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

Signs You Need a Replacement

Outdoor unit hums or buzzes but the compressor won't start
Pitted, burnt, or melted contact surface
Compressor runs nonstop because the contact is welded closed
Chattering or rapid clicking when the system cycles

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 30A 1-Pole Contactor fo...

$28.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TXA649GKA100 — 24V Coil w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TXA649GKA100 — 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 TXA649GKA100 — 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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