What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCA424AKA4 — 1-Pole 25A 24V | 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 TCA424AKA4 — 1-Pole 25A 24V | 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 for TCA424AKA4 — 1-Pole 25A 24V | Ships Today

Name: Tempstar Contactor for TCA424AKA4 — 1-Pole 25A 24V | Ships Today
Brand: Tempstar
SKU: 1050699-GEN
Price: 24.95 USD
Availability: InStock

SKU: 1050699-GEN Brand: Tempstar

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Overview

This is a genuine OEM single-pole definite purpose contactor (part number 1050699) for the Tempstar TCA424AKA4 condensing unit. The contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. A 24-volt control signal pulls in the coil, closing the high-voltage line contacts and allowing power to flow to the outdoor unit. Rated at 25 amps with a 24V coil, this 1-pole device is built to handle thousands of switching cycles per cooling season. When a contactor fails, the most common symptoms are an outdoor unit that hums but will not start, pitted or burned contacts that arc and chatter, or a system that runs continuously because the contacts have welded shut. Replacing a worn contactor restores reliable starting and protects the compressor from low-voltage and chatter damage.

Specifications

Spec	Value
OEM Part Number	1050699
Type	Definite Purpose Contactor
Poles	1 (Single Pole)
Brand	Tempstar
Contact Rating	25 Amps
Coil Voltage	24 VAC
Fits Model	TCA424AKA4

Compatibility

This contactor is the factory-specified replacement for the Tempstar TCA424AKA4 air conditioner and is shared across the ICP family of brands including Heil, Comfortmaker, and Arcoaire units that use the same control circuit. Because it is a definite-purpose 1-pole 25A 24V device, it is also a direct functional match for many similar residential condensing units of the same tonnage. Always confirm the amp rating, pole count, and coil voltage against the contactor you are removing before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and main breaker, then verify zero voltage at the contactor terminals with a multimeter.
Access — Remove the condensing unit's electrical access panel.
Document — Photograph all wires and their terminal positions before disconnecting anything.
Remove — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from its mounting bracket.
Install — Mount the new contactor, then reconnect each wire to the matching terminal per your photo.
Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit hums or buzzes but the compressor will not start
Visible pitting, burning, or melted plastic on the contact points
Chattering or rapid clicking when the system tries to start
System runs nonstop because the contacts have welded closed

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 for TCA424AKA...

$24.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TCA424AKA4 — 1-Pole 25A 24V | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCA424AKA4 — 1-Pole 25A 24V | 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 TCA424AKA4 — 1-Pole 25A 24V | 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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