Tempstar Contactor for T4H324GKA100 — 1-Pole 30A 24V Coil | Ships Today

Overview

This OEM single-pole definite purpose contactor (part #1172472) is the electrical switch that energizes the compressor and outdoor fan motor in your Tempstar T4H324GKA100 heat pump. When the thermostat calls, the 24V control coil pulls the main contacts closed and routes line voltage to the condensing unit. It is rated for 30 amps with a 24-volt coil and includes a shunt for the line-side connection. A worn contactor is a frequent no-cool/no-heat cause — look for a unit that hums but won't start, pitted or welded contacts, chattering, or no engagement on a call.

Specifications

Compatibility

OEM replacement for the Tempstar T4H324GKA100 heat pump. The 1-pole 30A/24V format is shared across ICP-family condensing units (Heil, Comfortmaker, Arcoaire, Keeprite). Confirm coil voltage and amp rating against your existing contactor before installing.

Installation Guide

1. Safety First — Disconnect power at the outdoor disconnect and breaker; verify zero voltage at the terminals with a multimeter.
2. Access — Remove the condensing unit's electrical access panel.
3. Document — Photograph every wire and terminal position before disconnecting.
4. Remove — Transfer the line, load, and 24V coil leads one at a time, then unscrew the old contactor from the bracket.
5. Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
6. Test — Restore power, call for operation, and confirm the contacts pull in cleanly and the compressor and fan start.

Signs You Need a Replacement

• Outdoor unit hums but the compressor won't start
• Burnt, pitted, or welded contacts
• Chattering when the thermostat calls
• Intermittent cooling or a unit that won't shut off

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day hassle-free returns. Backed by the National HVAC Parts fitment guarantee.