![Lennox 38M78 Low Ambient Switch, 450/250 PSI — New England Supply House spec card [NESH-SPEC-CARD-V2]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-38m78-card.png?v=1794092701&width=1946)
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Lennox 38M78 Low Ambient Switch, 450/250 PSI
Lennox 38M78 Low Ambient Switch, 450/250 PSI
Regular price
$45.64 USD
Regular price
Sale price
$45.64 USD
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Low stock: 2 left
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SKU:38M78
View full details![Lennox 38M78 Low Ambient Switch, 450/250 PSI — New England Supply House spec card [NESH-SPEC-CARD-V2]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-38m78-card.png?v=1794092701&width=1445)
![Lennox 38M78 Low Ambient Switch, 450/250 PSI specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-38m78-specs.png?v=1794092702&width=1445)
This Lennox 38M78 low ambient switch is a genuine Lennox replacement part that cycles the condenser fan based on head pressure to maintain proper refrigerant pressure during low ambient temperature operation. It cuts in at 450 PSI and cuts out at 250 PSI. Confirm the part number against your equipment's parts list before ordering.
Specifications
| Part Number | 38M78 |
|---|---|
| Brand | Lennox |
| Type | Low Ambient Switch |
| Cut-in | 450 PSI |
| Cut-out | 250 PSI |