![Lennox 99W84 Defrost Sensor, SPST specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-99w84-specs.png?v=1794095530&width=1445)
This Lennox 99W84 defrost sensor is an SPST (single-pole, single-throw) sensor that opens at 70°F and closes at 50°F, signaling the control board to start and end the defrost cycle on the outdoor coil. This is a genuine Lennox replacement part. Confirm the part number against your equipment's parts list before ordering.
Specifications
| Part Number | 99W84 |
|---|---|
| Brand | Lennox |
| Type | Defrost Sensor |
| Switch Configuration | SPST |
| Opens At | 70°F |
| Closes At | 50°F |