What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TCH648GKA100 — 1-Pole 30A 24V w/Shunt | 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 TCH648GKA100 — 1-Pole 30A 24V w/Shunt | 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 TCH648GKA100 — 1-Pole 30A 24V w/Shunt | Ships Today

Name: Tempstar Contactor for TCH648GKA100 — 1-Pole 30A 24V w/Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 28.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This OEM single-pole definite purpose contactor (part number 1172472) is the high-voltage switch that energizes the compressor and condenser fan motor in your Tempstar TCH648GKA100. Rated for 30 amps with a 24V control coil and an integrated shunt, it closes when the thermostat calls for cooling and the 24V circuit energizes the coil. Contactors are a common failure point because the contacts arc and pit with every cycle. Symptoms of a failing contactor include the outdoor unit failing to start, a loud chatter or hum at the contactor, contacts that weld closed (unit runs constantly), or visibly burned/pitted contact points.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor, 1-Pole, w/Shunt
Brand	Tempstar
Poles	1
Contact Rating	30A
Coil Voltage	24V
Fitment	OEM

Compatibility

Direct OEM replacement for the Tempstar TCH648GKA100 condensing unit. This 1-pole 30A 24V contactor is widely shared across ICP-family outdoor units (Heil, Comfortmaker, Arcoaire) of similar tonnage. Verify pole count, amp rating, and coil voltage against your existing contactor before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter across the line terminals.
Access — Remove the service panel to expose the contactor and wiring.
Document — Photograph every line, load, and 24V coil wire before disconnecting.
Remove — Transfer the wires off the old contactor one at a time, then unscrew it from the mounting bracket.
Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
Test — Restore power and verify the contactor pulls in cleanly on a cooling call and the compressor/fan energize.

Signs You Need a Replacement

Outdoor unit won't start even with a cooling call and 24V at the coil
Loud chattering or buzzing from the contactor
Contacts welded closed — unit runs nonstop and won't shut off
Burned, pitted, or melted contact points

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 TCH648GKA...

$28.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TCH648GKA100 — 1-Pole 30A 24V w/Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TCH648GKA100 — 1-Pole 30A 24V w/Shunt | 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 TCH648GKA100 — 1-Pole 30A 24V w/Shunt | 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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