Tempstar Contactor for TCH218AKD1 — 1-Pole 25A 24V Coil | Ships Today

Overview

This is a genuine OEM single-pole definite-purpose contactor (P/N 1050699) for the Tempstar TCH218AKD1 heat pump. The contactor is the electrically operated switch that energizes the outdoor unit: on a thermostat call, 24V hits the contactor coil, the armature pulls in, and line voltage passes through the 25A contacts to the compressor and condenser fan motor. Because it cycles every time the system runs, it's one of the most failure-prone parts in the unit. Telltale symptoms of a worn contactor include a buzzing or chattering outdoor unit, pitted or welded contacts that keep the compressor running nonstop, or contacts that won't close so the outdoor unit stays dead while the indoor blower runs.

Specifications

Compatibility

Engineered for the Tempstar TCH218AKD1 condensing unit and shared across many ICP-family residential heat pumps and air conditioners (Tempstar, Heil, Comfortmaker, Arcoaire). Always confirm against your unit's OEM part number before installing.

Installation Guide

1. Safety First — Disconnect power at the outdoor disconnect and breaker; verify zero voltage at the contactor terminals with a multimeter.
2. Access — Remove the service panel from the condensing unit.
3. Document — Photograph every wire and terminal position before disconnecting anything.
4. Remove — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from its bracket.
5. Install — Mount the new contactor and reconnect each wire exactly 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

• Loud buzzing or chattering from the outdoor unit
• Pitted, burned, or welded contacts
• Compressor runs continuously and won't shut off
• Outdoor unit dead while indoor blower runs

Shipping & Returns

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