Tempstar Contactor for T4H342GKE100 — 1-Pole 30A 24V w/ Shunt | Ships Today

Overview

This OEM 1-pole, 30-amp contactor with a 24V coil (part #1172472, includes shunt) is the electrical switch that powers the compressor and outdoor fan on your Tempstar T4H342GKE100 heat pump. When the thermostat calls for cooling or heating, the 24V coil pulls in the contacts and sends line voltage to the outdoor unit. Contactors are wear items: their contacts pit, burn, and weld over thousands of cycles. A failed contactor is one of the most common no-cool/no-heat service calls — symptoms include an outdoor unit that won't start, contacts that chatter or buzz, or a unit that won't shut off because the contacts have welded closed.

Specifications

Compatibility

Direct OEM replacement for the Tempstar T4H342GKE100 heat pump and related Heil, Comfortmaker, and ICP-built condensing units using a 1-pole 30A 24V contactor. Verify your existing contactor's pole count, amp rating, and coil voltage before installing.

Installation Guide

1. Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
2. Access — Remove the electrical access panel on the condenser.
3. Document — Photograph every line, load, and 24V coil wire before disconnecting.
4. Remove — Transfer wires one at a time, or unbolt the contactor and label leads, then remove the mounting screws.
5. Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
6. Test — Restore power and confirm the contactor pulls in cleanly on a thermostat call with no chatter.

Signs You Need a Replacement

• Outdoor unit won't start on a cooling/heating call
• Loud buzzing or chattering at the contactor
• Pitted, burnt, or welded contacts
• Unit won't turn off (contacts stuck closed)

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.