White Rodgers 50M56X-843 Universal Single Stage HSI Integrated Furnace Control Kit
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Universal single-stage HSI integrated furnace control kit. Designed for quick replacement of virtually all White-Rodgers and competitive carbide/nitride systems, including several Carrier HK42FZ models.
- Replaces all OEM models for both 80V and 120V ignitor applications
- Complete kit for fast and accurate installation
- Wide-ranging compatibility across major furnace brands
- SKU WR50M56X-843
Most in-stock items ship within 1–3 business days. Once shipped, you will receive a confirmation email with tracking. Special-order items or items shipped from partner warehouses may require additional processing time. Orders ship via UPS or USPS depending on the item and destination. If you need a specific carrier, please contact us before placing your order.