![Lennox 59W40 Blower Proving Switch, -0.15 in. WC — New England Supply House spec card [NESH-SPEC-CARD-V2]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-59w40-card.png?v=1794088895&width=1946)
![Lennox 59W40 Blower Proving Switch, -0.15 in. WC specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-59w40-specs.png?v=1794088895&width=1946)
Lennox 59W40 Blower Proving Switch, -0.15 in. WC
Lennox 59W40 Blower Proving Switch, -0.15 in. WC
Regular price
$50.62 USD
Regular price
Sale price
$50.62 USD
Shipping calculated at checkout.
17 in stock
Quantity
- Purchase Orders & Tax-Exempt Welcome Contractors, municipalities, schools and businesses: email a PO, or send your exemption certificate once and tax comes off every order.
SKU:59W40
View full details![Lennox 59W40 Blower Proving Switch, -0.15 in. WC — New England Supply House spec card [NESH-SPEC-CARD-V2]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-59w40-card.png?v=1794088895&width=1445)
![Lennox 59W40 Blower Proving Switch, -0.15 in. WC specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-59w40-specs.png?v=1794088895&width=1445)
This Lennox 59W40 is a blower proving switch used to confirm that the blower is running before the furnace is allowed to proceed with its heating or cooling cycle. It is rated at -0.15 in. WC, switching on the negative pressure created by blower airflow. This is a genuine Lennox replacement part.
Confirm this part number against your equipment's parts list before ordering.
Specifications
| Part Number | 59W40 |
|---|---|
| Brand | Lennox |
| Type | Blower Proving Switch |
| Pressure Rating | -0.15 in. WC |