What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TXA448AKA2 — 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 TXA448AKA2 — 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 TXA448AKA2 — 24V Coil | Ships Today

Name: Tempstar 1-Pole 35A Contactor for TXA448AKA2 — 24V Coil | Ships Today
Brand: Tempstar
SKU: 1050839-GEN
Price: 29.00 USD
Availability: InStock

SKU: 1050839-GEN Brand: Tempstar

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Overview

This genuine OEM single-pole contactor (Part #1050839) is the 35-amp, 24-volt-coil switching relay for the Tempstar TXA448AKA2 condensing unit. When the thermostat calls for cooling, the 24V control signal energizes the coil, pulling the contacts closed to send line voltage to the compressor and condenser fan motor. A failing contactor is one of the most common no-cool service calls: pitted or welded contacts cause chatter, hard starts, or a unit that won't shut off, while burnt or open coils prevent the system from starting at all. Replacing a worn 35A contactor restores clean, reliable switching and protects the compressor from voltage drop.

Specifications

Spec	Value
Part Number	1050839
Type	Definite Purpose Contactor
Brand	Tempstar (ICP / Heil)
Poles	1 (Single Pole)
Contact Rating	35 Amps
Coil Voltage	24 VAC
Fit	OEM direct replacement

Compatibility

Built for the Tempstar TXA448AKA2 air conditioner and matching ICP/Heil/Comfortmaker condensing units that use a single-pole 35A 24V-coil contactor. Verify amp rating, pole count, and coil voltage against the part you are removing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
Access — Remove the condenser service panel.
Document — Photograph all line, load, and coil wires before disconnecting.
Remove — Move each wire to the new contactor one at a time, then unscrew and remove the old contactor.
Install — Mount the new 35A contactor, transfer the remaining wires per your photo, and confirm the 24V coil leads are seated.
Test — Restore power, call for cooling, and verify the contacts pull in cleanly and the compressor and fan energize.

Signs You Need a Replacement

Chattering or buzzing at the contactor
Pitted, burnt, or welded contacts
Unit won't start or won't shut off
Open or burnt 24V coil reading on the meter

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 1-Pole 35A Contactor fo...

$29.00

Frequently Asked Questions

Does this Contactor fit my Tempstar TXA448AKA2 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TXA448AKA2 — 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 TXA448AKA2 — 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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