What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCA248AKB1 — 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 TCA248AKB1 — 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 TCA248AKB1 — 24V Coil | Ships Today

Name: Tempstar 1-Pole 35A Contactor for TCA248AKB1 — 24V Coil | Ships Today
Brand: Tempstar
SKU: 1050839-GEN
Price: 28.95 USD
Availability: InStock

SKU: 1050839-GEN Brand: Tempstar

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Overview

This genuine OEM definite-purpose contactor (part number 1050839) is the main switching relay for the Tempstar TCA248AKB1 condensing unit. It is a single-pole device rated for 35 amps with a 24-volt control coil. When the thermostat calls for cooling, the 24V signal energizes the coil and pulls the contacts closed, sending line voltage to the compressor and condenser fan motor. Contactors are a high-wear item: the contacts pit and burn over thousands of cycles, and the coil can fail open. A worn contactor causes hard starting, chattering, welded contacts, or a unit that won't energize at all.

Specifications

Spec	Value
Part Number	1050839
Type	Single-Pole (1P) Contactor
Brand	Tempstar
Contact Rating	35 Amps
Coil Voltage	24V
Poles	1
Fit	Genuine OEM

Compatibility

Built for the Tempstar TCA248AKB1 and shared across the ICP / Heil / Tempstar TCA248 condenser family that uses the same 1-pole 35A control. Verify your existing contactor's amp and coil-voltage ratings before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the service panel to reach the control box.
Document — Photograph every wire and terminal position before disconnecting.
Remove — Label and disconnect the line, load, and 24V coil wires, then unfasten the old contactor.
Install — Mount the new contactor and reconnect each wire exactly per your photo.
Test — Restore power, call for cooling, and confirm the contacts pull in and the compressor and fan run.

Signs You Need a Replacement

Loud chattering or buzzing from the contactor
Pitted, burned, or welded contacts
Compressor and fan won't start on a cooling call
Unit runs continuously or won't shut off (stuck 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...

$28.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TCA248AKB1 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCA248AKB1 — 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 TCA248AKB1 — 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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