What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TSA518GKA101 — 1-Pole 30A 24V Coil 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 TSA518GKA101 — 1-Pole 30A 24V Coil 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 TSA518GKA101 — 1-Pole 30A 24V Coil w/Shunt | Ships Today

Name: Tempstar Contactor for TSA518GKA101 — 1-Pole 30A 24V Coil w/Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 24.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This OEM contactor (part #1172472) is the single-pole, 30-amp, 24-volt switching relay used in the Tempstar TSA518GKA101 condensing unit. The contactor is an electromagnetic switch: when the 24V coil energizes from the thermostat call, it pulls the contacts closed and sends line voltage to the compressor and condenser fan motor. The factory shunt protects the coil circuit. Contactors are one of the most common failure points in air conditioning systems because the contacts arc every cycle, eventually pitting, welding, or burning. Symptoms of a failing contactor include a unit that won't start, a loud buzzing or chattering at the contactor, an outdoor fan and compressor that run continuously even when the thermostat is satisfied, or visibly burned and pitted contact points.

Specifications

Spec	Value
OEM Part Number	1172472
Type	Definite Purpose Contactor
Brand	Tempstar (ICP / Heil)
Poles	1-Pole (Single Pole)
Contact Rating	30 Amps
Coil Voltage	24V
Features	Integrated Shunt

Compatibility

Engineered as a direct OEM replacement for the Tempstar TSA518GKA101 air conditioner condensing unit. This contactor is also shared across many ICP-family condensers (Tempstar, Heil, Comfortmaker, Arcoaire) that use a 1-pole 30A 24V control. Always verify your existing contactor's pole count, amp rating, and coil voltage 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 every wire and terminal location before disconnecting anything.
Remove — Label and remove the line, load, and 24V coil wires, then unscrew the old contactor from the bracket.
Install — Mount the new contactor, reconnect each wire to the matching terminal per your photo, and confirm the coil leads land on the 24V terminals.
Test — Restore power, place a cooling call, and confirm the contacts pull in cleanly and the compressor and fan energize.

Signs You Need a Replacement

Outdoor unit buzzes or chatters but won't start.
Compressor and fan keep running after the thermostat is satisfied (welded contacts).
Visibly pitted, burned, or melted contact points.
Intermittent cooling or the unit only starts when you tap the contactor.

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 Contactor for TSA518GKA...

$24.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TSA518GKA101 — 1-Pole 30A 24V Coil w/Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TSA518GKA101 — 1-Pole 30A 24V Coil 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 TSA518GKA101 — 1-Pole 30A 24V Coil 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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