What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCA424AKC4 — 1-Pole 25A 24V Coil | 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 TCA424AKC4 — 1-Pole 25A 24V Coil | 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 TCA424AKC4 — 1-Pole 25A 24V Coil | Ships Today

Name: Tempstar Contactor for TCA424AKC4 — 1-Pole 25A 24V Coil | 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 TCA424AKC4 condensing unit. The contactor is the electrically operated switch that feeds line voltage to the compressor and condenser fan motor each time the thermostat calls for cooling. A 24-volt signal energizes the coil and pulls the 25-amp contacts closed to start the outdoor unit. It is rated for 1 pole, 25 amps, with a 24V coil. Burned, pitted, or welded contacts are a leading cause of a unit that hums, chatters, won't start, or runs continuously.

Specifications

Spec	Value
OEM Part Number	1050699
Description	Contactor 1P 25A 24V
Type	Definite Purpose, Single-Pole
Brand	Tempstar
Contact Rating	25 Amps
Coil Voltage	24 VAC
Poles	1

Compatibility

Direct-fit OEM replacement for the Tempstar TCA424AKC4 air conditioner / heat pump condensing unit. The 1050699 contactor is shared across many ICP-family condensers (Heil, Comfortmaker, Tempstar, Arcoaire) of similar tonnage. Verify your existing contactor matches part number 1050699 before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser service panel to reach the electrical compartment.
Document — Photograph all wiring on the existing contactor before disconnecting.
Remove — Transfer or label each lead, then unscrew the old contactor from its bracket.
Install — Mount the new contactor and reconnect line, load, and 24V coil leads per your photo.
Test — Restore power and confirm the contactor pulls in on a cooling call and the unit starts.

Signs You Need a Replacement

Outdoor unit hums or buzzes but the compressor and fan won't start.
Visible pitting, burning, or melted plastic on the contacts.
Contacts welded closed, causing the unit to run nonstop.
Chattering or rapid clicking on a cooling call.

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 Contactor for TCA424AKC...

$24.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TCA424AKC4 — 1-Pole 25A 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCA424AKC4 — 1-Pole 25A 24V Coil | 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 TCA424AKC4 — 1-Pole 25A 24V Coil | 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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