Skip to Navigation Skip to Content

What You Can Expect:

The most in-stock parts on the planet — all OEM, all the time
Cool technology to make finding and buying parts a breeze, including Serial Number Lookup, PartSPIN® and Smart Manuals, found on partstown.com and our industry-leading mobile app
An exceptional customer experience from the team you know and trust with every email, live chat, text and phone call, provided by a friendly and knowledgeable team
Later hours than anyone else — offering support and shipping all in-stock orders until 9PM ET

ribbon image

Real OEM HVAC Parts Are In This Spring! SHOP NOW

find parts
find manuals

Find Foodservice Equipment Parts

Enter keyword or Part #

Lennox 18L89 Pressure Switch, Blower Proving, SPST, 0.14 +/-0.05" WC on Rise.

Drag to spin

How to get it fast to ?

Ship It!

In Stock
Ships today from Parts Town Ships from Parts Town

Ships from

if ordered in the next 02h : 37min : 10sec

Promotional Price:

396.79 $ My Price: $ 396.79

Add to cart

2 more Purchase Options for Shipping

1-Hour Pickup!

Quantity Available:

Pickup hours: Mon - Fri
My Price:

Add to cart

more pickup options

See Local Inventory
Same Day Delivery!
Our same-day delivery window is now closed. Orders placed at this time will be delivered on the next business day. The Delivery Fee is not refundable if the order is canceled after the driver is in route to pick up the order.

Quantity Available:
My Price:

Add to cart

Card Label

Billing Address

First Name

Last Name

Address Line

Apt or Suite Number

City

Country/Region

State/Province

Zip/Postal Code

List Price:

$ 638.05

Quantity Available:

26

Quantity Available:

26

Manufacturer:

Lennox

Manufacturer #:

18L89

Parts Town #:

LEN18L89

Previous Part #:

LEN18L8901

Units:

Each

Fits Models:

View Models List

California Residents:

Proposition 65 Warning

Lennox 18L89 Genuine OEM Replacement Part

The Lennox 18L89 Pressure Switch helps maintain safe and effective operation by managing power in response to pressure variations.

Real OEM buttons and switches provide reliable control when you need it most
Fits popular LCH420H4-02, LCH420S4-01, LCH420H4-01 units and more (see FITS MODELS below for complete list)
Common Equipment Type(s):
Application: Blower Proving
Configuration: SPST
Pressure Rating: 0.14 +/-0.05" WC on Rise
Product Type: Pressure Switch

Required fields.

Card Label

Expiration Date

Billing Address

First Name

Last Name

Address Line

Apt or Suite Number

City

Country/Region

State/Province

Zip/Postal Code

Frequently Bought Together

Habituellement achetés ensemble

Comprados juntos habitualmente

Fits Models
Specs

Length:

4.2 in / 10.67 cm
Width:

5.5 in / 13.97 cm
Height:

3.1 in / 7.87 cm
Weight:

0.58 lbs / 263 g