What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCA248AKA4 — 1-Pole 35A 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 TCA248AKA4 — 1-Pole 35A 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 Contactor for TCA248AKA4 — 1-Pole 35A 24V Coil | Ships Today

Name: Tempstar Contactor for TCA248AKA4 — 1-Pole 35A 24V Coil | Ships Today
Brand: Tempstar
SKU: 1050839-GEN
Price: 29.95 USD
Availability: InStock

SKU: 1050839-GEN Brand: Tempstar

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Overview

This is a genuine OEM single-pole definite purpose contactor (part number 1050839) for the Tempstar TCA248AKA4 condensing unit. The contactor is the electrically operated switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. Its 24-volt coil pulls in a set of power contacts rated for 35 amps, completing the high-voltage circuit to the outdoor unit. When a contactor fails, the most common symptoms are an outdoor unit that won't start, contacts that buzz or chatter, pitted or welded contacts that keep the compressor running continuously, or visible arcing and burn marks on the terminals. Because the contactor cycles thousands of times per season, it is one of the most frequently replaced components in an air conditioner or heat pump.

Specifications

Spec	Value
Part Number	1050839
Type	Definite Purpose Contactor, 1-Pole
Brand	Tempstar (ICP / Heil family)
Contact Rating	35 Amps
Coil Voltage	24 VAC
Poles	1
Fitment	OEM Replacement

Compatibility

Designed as a direct OEM replacement for the Tempstar TCA248AKA4 condensing unit. This same contactor is widely used across ICP-built outdoor units sold under the Tempstar, Heil, Comfortmaker, and Arcoaire brands. Always confirm the existing part number (1050839) and coil voltage before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and the breaker, then verify zero voltage with a multimeter across the line terminals.
Access — Remove the service/electrical access panel on the condensing unit.
Document — Take a clear photo of every wire and terminal before disconnecting anything.
Remove — Note the line, load, and 24V coil leads, then transfer wires one at a time. Unscrew the old contactor from the mounting bracket.
Install — Mount the new 1050839 contactor and reconnect each wire to the matching terminal per your photo.
Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit won't start even though the thermostat is calling for cooling.
Loud buzzing, humming, or chattering from the contactor.
Pitted, burned, or welded contacts that keep the compressor running nonstop.
Visible arcing, melted plastic, or scorch marks on the terminals.

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 Contactor for TCA248AKA...

$29.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TCA248AKA4 — 1-Pole 35A 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCA248AKA4 — 1-Pole 35A 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 TCA248AKA4 — 1-Pole 35A 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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