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Pressure Switches

HVAC pressure switches are safety and control components used to verify proper airflow, draft, and system pressure before and during operation. NWF Supply offers a selection of OEM and OEM replacement pressure switches compatible with major HVAC manufacturers including Nordyne, Frigidaire, Lennox, Trane, and York.

These pressure switches are commonly used in gas furnaces, packaged units, and air handlers to monitor inducer operation, venting conditions, and system safety circuits. All replacement switches are matched to original equipment specifications for pressure rating, electrical configuration, hose connection size, and mounting style to ensure proper system operation and reliable safety performance.

Our inventory includes direct-replacement HVAC pressure switches designed for accurate sensing, consistent operation, and dependable performance in residential and light commercial HVAC applications.

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100684-09 Lennox Armstrong Ducane Gas Furnace Pressure Switch
$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00

100684-09 Lennox Armstrong Ducane Gas Furnace Pressure Switch

Lennox International, Inc.
Only 4 left!

100684-09 Lennox Pressure Switch 0.6" WC, SPST, Pressure Switch

$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00
103245-09 Lennox Armstrong Ducane OEM Replacement Pressure Switch 1 Single Stage .90"
$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00

103245-09 Lennox Armstrong Ducane OEM Replacement Pressure Switch 1 Single Stage .90"

Lennox International, Inc.
Only 4 left!

This is a brand new Lennox pressure switch part# 10U94.  This pressure switch is the OEM replacement for part# 103245-09 .90"wc SPST Pressure Switch

$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00
103614-09 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"
$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00

103614-09 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"

Lennox International, Inc.
Only 4 left!

This is a brand new Lennox pressure switch part# 10U94.  This pressure switch is the OEM replacement for part# 103614-09 .90"wc SPST Pressure Switch

$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00
103614-19 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"
$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00

103614-19 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"

Lennox International, Inc.
Only 4 left!

This is a brand new Lennox pressure switch part# 10U94.  This pressure switch is the OEM replacement for part# 103614-19 .90"wc SPST Pressure Switch

$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00
104106-02 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"
$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00

104106-02 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"

Lennox International, Inc.
Only 4 left!

This is a brand new Lennox pressure switch part# 10U94.  This is also Lennox part# 104106-02 .90"wc SPST Pressure Switch

$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00
100087-14 - Hi Pressure Switch
$0.00 - $0.00
$0.00
$34.00
$34.00 - $34.00
$34.00

100087-14 OEM Allied Lennox Concord Armstrong Hi Pressure Switch

Lennox International, Inc. / Allied Air Enterprises LLC
Only 4 left!

This is a brand-new OEM Lennox/Allied Air 590# N/C Hi-Pressure Switch part number 12L20. This is the OEM replacement for obsolete Part# 100087-14. ...

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$0.00 - $0.00
$0.00
$34.00
$34.00 - $34.00
$34.00
10U94 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"
$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00

10U94 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"

Lennox International, Inc.
Only 4 left!

10U94 Lennox Pressure Switch .90"wc SPST Pressure Switch

$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00
R47865-001 Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC
$0.00 - $0.00
$0.00
$42.00
$42.00 - $42.00
$42.00

R47865-001 Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC

Lennox International, Inc. / Allied Air Enterprises LLC
Only 1 left!

This is a brand new OEM part# R102463-01- Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC that replaces old part# R47865-001

$0.00 - $0.00
$0.00
$42.00
$42.00 - $42.00
$42.00
R102463-01- Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC
$42.00 - $42.00
$42.00
$42.00 - $42.00
$42.00

R102463-01- Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC

Lennox International, Inc. / Allied Air Enterprises LLC
Only 1 left!

This is a brand new OEM part# R102463-01- Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC

$42.00 - $42.00
$42.00
$42.00 - $42.00
$42.00
104371-09 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"
$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00

104371-09 Lennox Armstrong Ducane Pressure Switch 1 Single Stage .90"

Lennox International, Inc.
Only 4 left!

This is a brand new Lennox pressure switch part# 10U94.  This pressure switch is the OEM replacement for part# 104371-09 .90"wc SPST Pressure Switch

$0.00 - $0.00
$0.00
$68.00
$68.00 - $68.00
$68.00
9370VO-5S-0039 - Lennox Armstrong Ducane Gas Furnace Pressure Switch
$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00

9370VO-5S-0039 - Lennox Armstrong Ducane Gas Furnace Pressure Switch

Lennox International, Inc. / Allied Air Enterprises LLC
Only 4 left!

9370VO-5S-0039- Lennox Pressure Switch 0.6" WC, SPST, Pressure Switch

$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00
R100684-09 Lennox Armstrong Ducane Gas Furnace Pressure Switch
$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00

R100684-09 Lennox Armstrong Ducane Gas Furnace Pressure Switch

Lennox International, Inc. / Allied Air Enterprises LLC
Only 4 left!

R100684-09 Lennox Pressure Switch 0.6" WC, SPST, Pressure Switch

$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00
R100684-02 - Lennox Armstrong Ducane Gas Furnace Pressure Switch
$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00

R100684-02 - Lennox Armstrong Ducane Gas Furnace Pressure Switch

Lennox International, Inc. / Allied Air Enterprises LLC
Only 4 left!

R100684-02- Lennox Pressure Switch 0.6" WC, SPST, Pressure Switch

$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00
56W65- Lennox Armstrong Ducane Gas Furnace Pressure Switch
$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00

56W65- Lennox Armstrong Ducane Gas Furnace Pressure Switch

Lennox International, Inc. / Allied Air Enterprises LLC
Only 4 left!

56W65- Lennox Pressure Switch 0.6" WC, SPST, Pressure Switch

$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00

100087-02 OEM Lennox Allied Replacement Low Pressure Switch 40psi

Lennox International, Inc. / Allied Air Enterprises LLC
Only 5 left!

 This is a brand-new Lennox/Allied OEM Low-Pressure Switch Part# 23W26. This Low-Pressure Switch 40psi. This is the OEM replacement for obsolete Pa...

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$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00

1P100087-066 OEM Lennox Allied Replacement Low Pressure Switch 40psi

Lennox International, Inc. / Allied Air Enterprises LLC
Only 5 left!

 This is a brand-new Lennox/Allied OEM Low-Pressure Switch Part# 23W26. This Low-Pressure Switch 40psi. This is the OEM replacement for obsolete Pa...

View full details
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00

1P23W26 OEM Lennox Allied Replacement Low Pressure Switch 40psi

Lennox International, Inc. / Allied Air Enterprises LLC
Only 5 left!

 This is a brand-new Lennox/Allied OEM Low-Pressure Switch Part# 23W26. This Low-Pressure Switch 40psi. This is the OEM replacement for obsolete Pa...

View full details
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00

100087-06 OEM Lennox Allied Replacement Low Pressure Switch 40psi

Lennox International, Inc. / Allied Air Enterprises LLC
Only 5 left!

 This is a brand-new Lennox/Allied OEM Low-Pressure Switch Part# 23W26. This Low-Pressure Switch 40psi. This is the OEM replacement for obsolete Pa...

View full details
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00

R1000087-02 OEM Lennox Allied Replacement Low Pressure Switch 40psi

Lennox International, Inc. / Allied Air Enterprises LLC
Only 5 left!

 This is a brand-new Lennox/Allied OEM Low-Pressure Switch Part# 23W26. This Low-Pressure Switch 40psi. This is the OEM replacement for obsolete Pa...

View full details
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00

88M97 OEM Lennox Allied Replacement Low Pressure Switch 40psi

Lennox International, Inc. / Allied Air Enterprises LLC
Only 5 left!

 This is a brand-new Lennox/Allied OEM Low-Pressure Switch Part# 23W26. This Low-Pressure Switch 40psi. This is the OEM replacement for obsolete Pa...

View full details
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00

R100087-02 OEM Lennox Allied Replacement Low Pressure Switch 40psi

Lennox International, Inc. / Allied Air Enterprises LLC
Only 5 left!

 This is a brand-new Lennox/Allied OEM Low-Pressure Switch Part# 23W26. This Low-Pressure Switch 40psi. This is the OEM replacement for obsolete Pa...

View full details
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00

23W26 OEM Lennox Allied Replacement Low Pressure Switch 40psi

Lennox International, Inc. / Allied Air Enterprises LLC
Only 5 left!

This is a brand-new Lennox/Allied OEM Low-Pressure Switch Part# 23W26. This Low-Pressure Switch 40psi. This is used in several Lennox/Allied-brand ...

View full details
$51.00 - $51.00
$51.00
$51.00 - $51.00
$51.00
57W8301 Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC
$0.00 - $0.00
$0.00
$42.00
$42.00 - $42.00
$42.00

57W8301 Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC

Lennox International, Inc. / Allied Air Enterprises LLC
Only 1 left!

This is a brand new OEM part# R102463-01- Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC that replaces old part# 57W8301

$0.00 - $0.00
$0.00
$42.00
$42.00 - $42.00
$42.00
57W83 Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC
$0.00 - $0.00
$0.00
$42.00
$42.00 - $42.00
$42.00

57W83 Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC

Lennox International, Inc. / Allied Air Enterprises LLC
Only 1 left!

This is a brand new OEM part# R102463-01- Lennox Armstrong Ducane Furnace Air Pressure Switch .10" WC that replaces old part# 57W83

$0.00 - $0.00
$0.00
$42.00
$42.00 - $42.00
$42.00