![Lennox 34M74 Pressure Switch, .33 in. WC SPST — New England Supply House spec card [NESH-SPEC-CARD-V2]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-34m74-card.png?v=1794097098&width=1946)
![Lennox 34M74 Pressure Switch, .33 in. WC SPST specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-34m74-specs.png?v=1794097098&width=1946)
Lennox 34M74 Pressure Switch, .33 in. WC SPST
Lennox 34M74 Pressure Switch, .33 in. WC SPST
Regular price
$54.63 USD
Regular price
Sale price
$54.63 USD
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Low stock: 2 left
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SKU:34M74
View full details![Lennox 34M74 Pressure Switch, .33 in. WC SPST — New England Supply House spec card [NESH-SPEC-CARD-V2]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-34m74-card.png?v=1794097098&width=1445)
![Lennox 34M74 Pressure Switch, .33 in. WC SPST specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-34m74-specs.png?v=1794097098&width=1445)
The Lennox 34M74 is an SPST pressure switch rated at .33 inches water column, used to verify draft or airflow before allowing the burner to fire. This is a genuine Lennox replacement part. Confirm this part number matches the pressure switch on your equipment's parts list before ordering.
Specifications
| Part Number | 34M74 |
|---|---|
| Brand | Lennox |
| Type | Pressure Switch |
| Switch Type | SPST |
| Pressure Rating | .33 in. WC |