What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCA248VKA1 — 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 TCA248VKA1 — 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 TCA248VKA1 — 24V Coil | Ships Today

Name: Tempstar 1-Pole 35A Contactor for TCA248VKA1 — 24V Coil | Ships Today
Brand: Tempstar
SKU: 1050839-GEN
Price: 27.95 USD
Availability: InStock

SKU: 1050839-GEN Brand: Tempstar

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Overview

This genuine OEM definite-purpose contactor (part #1050839) is the switching relay for the Tempstar TCA248VKA1 condensing unit. It is a 1-pole, 35-amp device with a 24-volt control coil. When the thermostat calls for cooling, the 24V signal energizes the coil and closes the contacts, sending line voltage to the compressor and condenser fan motor. Contactor failure is one of the most frequent no-cool service calls — pitted or welded contacts leave the outdoor unit humming without starting, or running when it should be off. Replacing this inexpensive part restores clean, reliable switching to the compressor circuit.

Specifications

Spec	Value
Part Number	1050839
Type	Definite Purpose Contactor
Brand	Tempstar (ICP / Heil)
Poles	1-Pole
Resistive Rating	35 Amps
Coil Voltage	24 VAC
Fits Model	TCA248VKA1

Compatibility

Designed as a direct-fit replacement for the Tempstar TCA248VKA1 air conditioner. The same 1050839 contactor is used across related ICP, Heil, and Comfortmaker condensing units that originally specified a 1-pole 35A / 24V coil contactor. Always confirm pole count, amp rating, and coil voltage against your existing part before installing.

Installation Guide

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

Signs You Need a Replacement

Outdoor unit hums or buzzes but the compressor won't start.
Burned, pitted, or melted contact points.
Chattering or rapid clicking when cooling is called.
Compressor and fan keep running after the thermostat is satisfied (welded contacts).

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...

$27.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TCA248VKA1 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCA248VKA1 — 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 TCA248VKA1 — 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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