What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCA736GKA100 — 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 TCA736GKA100 — 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 Contactor 1-Pole 30A 24V for TCA736GKA100 — With Shunt | Ships Today

Name: Tempstar Contactor 1-Pole 30A 24V for TCA736GKA100 — With Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 24.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This is a genuine OEM 1-pole definite purpose contactor (part number 1172472) for the Tempstar TCA736GKA100 condensing unit. Rated for 30 amps with a 24-volt control coil and an integrated shunt, the contactor is the electrically operated switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. When the coil receives 24V from the control transformer, it pulls the contacts closed and sends line voltage to the outdoor equipment. A failing contactor is one of the most common causes of an outdoor unit that will not start, that hums without engaging, or that runs continuously because the contacts have welded shut. Pitted, burned, or chattering contacts produce intermittent operation and can damage the compressor over time.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor, 1-Pole, with Shunt
Brand	Tempstar (ICP / Heil)
Contact Rating	30 Amps
Coil Voltage	24 VAC
Poles	1
Fits Model	TCA736GKA100

Compatibility

This contactor is the factory replacement for the Tempstar TCA736GKA100 condensing unit and is shared across many ICP-family outdoor units, including matching Heil, Comfortmaker, and Day & Night condensers that use a 24V single-pole 30A contactor. Always confirm the part number stamped on your existing contactor and verify the coil voltage before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and the breaker, then verify zero voltage at the contactor terminals with a multimeter.
Access — Remove the electrical access panel on the condensing unit.
Document — Photograph all wire connections before disconnecting anything.
Remove — Note the line, load, and 24V coil wires, then transfer them one at a time, or label each lead before pulling them off. Unscrew the old contactor from its mounting bracket.
Install — Mount the new contactor, reconnect every wire exactly as photographed, confirming line in and compressor/fan out are correct.
Test — Restore power, call for cooling, and confirm the coil pulls in cleanly and the contacts seat without chatter.

Signs You Need a Replacement

Outdoor unit hums but the compressor and fan do not start.
Visible pitting, burning, or melted plastic on the contact points.
Unit runs nonstop even after the thermostat is satisfied (welded contacts).
Buzzing, chattering, or intermittent cooling.

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 Contactor 1-Pole 30A 24...

$24.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TCA736GKA100 — With Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCA736GKA100 — 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 TCA736GKA100 — 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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