What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCH448AKD1 — 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 TCH448AKD1 — 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 TCH448AKD1 — 24V Coil | Ships Today

Name: Tempstar 1-Pole 35A Contactor for TCH448AKD1 — 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 is the genuine Tempstar OEM single-pole definite-purpose contactor, part number 1050839, rated 35 amps with a 24-volt coil, for the TCH448AKD1 condensing unit. The contactor is the relay that switches line voltage to the compressor and condenser fan motor whenever the thermostat sends a 24VAC call through the coil. Over time the silver contacts pit, burn, and weld from arcing, and the coil can fail open — leaving the outdoor unit dead, chattering, or running when it shouldn't. A 1-pole contactor breaks one leg of power and floats the other, which is the factory configuration for this model. Replacing a worn contactor is one of the most common and reliable HVAC repairs.

Specifications

Spec	Value
Part Number	1050839
Type	Definite Purpose Contactor, 1-Pole
Brand	Tempstar (ICP / Heil family)
Contact Rating	35A
Coil Voltage	24V (24VAC)
Poles	1
Fits Model	TCH448AKD1
Fit	OEM direct replacement

Compatibility

Engineered for the Tempstar TCH448AKD1 condensing unit and compatible across ICP, Heil, and Comfortmaker units that specify a 1-pole, 35A, 24V-coil contactor. Confirm pole count, amp rating, and coil voltage against your existing part before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage across the contactor terminals with a multimeter.
Access — Remove the condenser control-box service panel.
Document — Photograph every line, load, and coil wire before disconnecting.
Remove — Label and disconnect the wires, then unfasten the old contactor from its mounting.
Install — Mount the new 35A contactor, and reconnect the line, compressor, fan, and 24V coil leads exactly per your photo.
Test — Restore power and verify the contactor pulls in on a cooling call and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit won't start or starts intermittently
Loud buzzing, humming, or chattering from the contactor
Pitted, burnt, or welded contacts visible on inspection
Coil reads open on a meter and won't pull the contacts in

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. 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 TCH448AKD1 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCH448AKD1 — 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 TCH448AKD1 — 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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