Tempstar Contactor for T4A448GKB200 — 1-Pole 30A 24V w/ Shunt | Ships Today
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Overview
This is a genuine OEM single-pole definite purpose contactor (part #1172472) for the Tempstar T4A448GKB200 air conditioning condensing unit. Rated at 30 amps with a 24V control coil and an integrated shunt, this contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. When the 24V coil receives a signal, it pulls the contacts closed and sends line voltage to the outdoor unit. Contactors are one of the most common HVAC failure points because the contacts arc and pit with every cycle. Symptoms of a failing contactor include a humming or chattering outdoor unit, a condenser that won't start, pitted or welded contacts, and a unit that runs continuously even after the thermostat is satisfied.
Specifications
| Spec | Value |
|---|---|
| OEM Part Number | 1172472 |
| Type | Definite Purpose Contactor |
| Brand | Tempstar |
| Poles | 1-Pole (single pole) |
| Contact Rating | 30 Amps |
| Coil Voltage | 24V |
| Features | Integrated shunt |
Compatibility
This OEM contactor is a direct-fit replacement for the Tempstar T4A448GKB200 condensing unit and is shared across many ICP family condensers, including comparable Heil, Comfortmaker, and Carrier/Bryant 24V single-pole 30A applications. Always verify your unit's existing contactor rating and coil voltage before installing.
Installation Guide
- Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter before touching any wiring.
- Access — Remove the 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 connections, then disconnect the wires and unscrew the old contactor from its bracket.
- Install — Mount the new contactor and reconnect each wire exactly as photographed, ensuring the 24V coil terminals are correct.
- Test — Restore power and call for cooling; confirm the contacts pull in cleanly and the unit starts without chatter.
Signs You Need a Replacement
- Loud humming, buzzing, or chattering from the outdoor unit
- Condenser won't start or starts intermittently
- Visibly pitted, burned, or welded contacts
- Outdoor unit runs even when the thermostat is off
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