Tempstar Contactor for TCA436AKA1 — 1-Pole 25A 24V Coil | Ships Today
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Overview
This genuine OEM single-pole contactor (part #1050699) is the electrical switch that delivers high-voltage power to the compressor and condenser fan motor in your Tempstar TCA436AKA1 condensing unit. Rated at 25 amps with a 24V control coil, it energizes whenever the thermostat calls for cooling. Each switching cycle produces a small arc across the contacts, and after years of service they pit, burn, or weld together. A degraded contactor is a frequent cause of no-cool service calls — common symptoms are a steady hum or buzz at the outdoor unit, a condenser that won't start, chattering contacts, or a compressor that runs nonstop because the points have stuck closed. This 25A 24V replacement restores clean, dependable switching and helps protect the expensive compressor it feeds.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1050699 |
| Type | Single-Pole (1P) Definite Purpose Contactor |
| Brand | Tempstar |
| Current Rating | 25 Amps |
| Coil Voltage | 24V |
| Fit | OEM Replacement |
Compatibility
This contactor is the factory-specified part for the Tempstar TCA436AKA1 condensing unit. The identical 1050699 contactor fits many ICP-family outdoor units (Tempstar, Heil, Comfortmaker) built around a single-pole 25A 24V control. Verify your unit's amperage and coil voltage on the data plate before installing.
Installation Guide
- Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the condenser service panel to expose the control compartment.
- Document — Photograph all wire positions before disconnecting anything.
- Remove — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from its bracket.
- Install — Mount the new contactor and reconnect each wire to its matching terminal per your photo.
- Test — Restore power and verify the contactor pulls in and the compressor and fan start on a cooling call.
Signs You Need a Replacement
- Loud humming or buzzing at the outdoor unit with no compressor start
- Pitted, burned, or blackened contact points
- Contacts that chatter or fail to pull in when energized
- Compressor running continuously from welded-shut contacts
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