What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCH442AKA2 — 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 TCH442AKA2 — 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 1-Pole 35A Contactor for TCH442AKA2 — 24V Coil | Ships Today

Name: Tempstar 1-Pole 35A Contactor for TCH442AKA2 — 24V Coil | Ships Today
Brand: Tempstar
SKU: 1050839-GEN
Price: 27.00 USD
Availability: InStock

SKU: 1050839-GEN Brand: Tempstar

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Overview

This OEM single-pole 35-amp contactor (Tempstar part #1050839) is the electrical switch that powers the compressor and outdoor fan motor in your TCH442AKA2 heat pump. When the thermostat calls for heating or cooling, the 24V control circuit energizes the contactor's coil, pulling the contacts closed to send line voltage to the compressor. Because it cycles every time the system runs, the contactor is a high-wear component — the contacts pit, burn, and weld over time, and the coil can fail open. A bad contactor is a leading cause of a no-start or short-cycling outdoor unit. Common failure signs include a humming or chattering contactor, visibly burned or pitted contacts, contacts that stick closed (unit won't shut off), or a unit that won't start at all even though the thermostat is calling.

Specifications

Spec	Value
Part Number	1050839
Type	Definite Purpose Contactor, Single-Pole
Brand	Tempstar
Contact Rating	35 Amps
Poles	1
Coil Voltage	24V
Fit	OEM Replacement

Compatibility

Built for the Tempstar TCH442AKA2 heat pump and interchangeable across ICP / Tempstar / Heil / Comfortmaker condensing units that use a 1-pole 35A definite-purpose contactor with a 24V coil. Verify pole count, amp rating, and coil voltage against your old part.

Installation Guide

Safety First — Shut off power at the disconnect and breaker; confirm zero voltage at the contactor line terminals with a multimeter.
Access — Remove the outdoor unit's electrical access panel.
Document — Photograph every line, load, and coil wire before removing anything.
Remove — Transfer wires one at a time, or label them, then unbolt the old contactor from the bracket.
Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
Test — Restore power and call for cooling; confirm the contactor pulls in and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit hums but compressor/fan won't start
Burned, pitted, or melted contacts
Contactor chatters or buzzes when energized
Contacts stuck closed — unit keeps running and won't shut off

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day hassle-free 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 35A Contactor fo...

$27.00

Frequently Asked Questions

Does this Contactor fit my Tempstar TCH442AKA2 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCH442AKA2 — 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 TCH442AKA2 — 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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