What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCH424AKA3 — 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 TCH424AKA3 — 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 TCH424AKA3 — 1-Pole 25A 24V Coil | Ships Today

Name: Tempstar Contactor for TCH424AKA3 — 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 OEM single-pole definite purpose contactor (part #1050699) energizes the compressor and condenser fan motor in your Tempstar TCH424AKA3 heat pump. Rated for 25 amps with a 24-volt control coil, it closes on a thermostat call for cooling and opens when the call ends. Contactors fail more often than nearly any other outdoor component: every closure arcs the contacts, and over thousands of cycles they pit, weld shut (unit runs nonstop), or fail to pull in (unit hums but won't start). Buzzing, ant-fouled or burned contacts, and chattering are classic end-of-life symptoms.

Specifications

Spec	Value
Part Number	1050699
Type	Single-Pole (1P) Definite Purpose Contactor
Brand	Tempstar
Current Rating	25 Amps
Coil Voltage	24 VAC
Poles	1
Fit	OEM

Compatibility

Engineered for the Tempstar TCH424AKA3 condensing unit and shared across the ICP/Heil family of split-system heat pumps and air conditioners that use a 24V, 25A single-pole contactor. Confirm the existing contactor's amp and coil-voltage ratings before installing.

Installation Guide

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

Signs You Need a Replacement

Loud buzzing or chattering at the outdoor unit when cooling starts
Compressor and fan won't start even though 24V reaches the coil
Unit runs continuously and won't shut off (contacts welded closed)
Pitted, blackened, or burned contact surfaces

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 TCH424AKA...

$24.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TCH424AKA3 — 1-Pole 25A 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCH424AKA3 — 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 TCH424AKA3 — 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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