What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCH018AKA1 — 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 TCH018AKA1 — 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 1-Pole Contactor for TCH018AKA1 — 25A 24V | Ships Today

Name: Tempstar 1-Pole Contactor for TCH018AKA1 — 25A 24V | Ships Today
Brand: Tempstar
SKU: 1050699-GEN
Price: 28.95 USD
Availability: InStock

SKU: 1050699-GEN Brand: Tempstar

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Overview

This genuine OEM single-pole contactor (part number 1050699) is rated 25 amps with a 24-volt coil for the Tempstar TCH018AKA1 heat pump. A contactor is the heavy-duty switch that delivers line voltage to the compressor and condenser fan motor. When the thermostat calls for cooling, the 24V control signal energizes the coil, pulling the contacts closed to power the outdoor unit. Contactors fail from pitted or welded contacts, a burned-out coil, or insect intrusion that blocks the contacts from closing. A failing contactor causes hard starts, chattering, or a condenser that won't run at all.

Specifications

Spec	Value
Part Number	1050699
Type	1-Pole Definite Purpose Contactor
Brand	Tempstar
Contact Rating	25A
Coil Voltage	24V
Poles	1
Fitment	OEM Replacement

Compatibility

Direct-fit OEM replacement for the Tempstar TCH018AKA1 heat pump and shared across many ICP-family (Tempstar, Heil, Comfortmaker) condensing units using a 25A single-pole, 24V-coil contactor. Verify amperage, pole count, and coil voltage against your existing contactor before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser access panel to reach the contactor.
Document — Photograph every wire and terminal position before disconnecting.
Remove — Label and disconnect the line, load, and coil wires, then unbolt the old contactor.
Install — Mount the new contactor and reconnect each wire exactly per your photo.
Test — Restore power and command cooling to confirm the contacts pull in and the unit runs.

Signs You Need a Replacement

Condenser won't start even though the thermostat is calling for cooling.
Loud humming, buzzing, or chattering from the outdoor unit.
Pitted, blackened, or welded contacts visible on the contactor.
Coil reads open or fails to pull the contacts closed on 24V.

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 1-Pole Contactor for TC...

$28.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TCH018AKA1 — 25A 24V | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCH018AKA1 — 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 TCH018AKA1 — 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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