JavaScript seems to be disabled in your browser. You should have JavaScript enabled in your browser to utilize the functionality of the website

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

Lennox Y4668 HN THX9421R5021WW REDLINK2 HD T-STAT

Lennox Y4668 HN THX9421R5021WW REDLINK2 HD T-STAT

How to get it fast to 432 15?

Ship It!

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Promotional Price:

873.14 C$ My Price: C$ 873.14

Add to cart

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

Card Label

Billing Address

First Name

Last Name

Address Line

Apt or Suite Number

City

Country/Region

State/Province

Zip/Postal Code

Something went wrong. Please try again.

Quantity Available:

0

Quantity Available:

0

Manufacturer:

Lennox

Manufacturer #:

Y4668

Parts Town #:

LENY4668

Units:

Each

Fits Models:

View Models List

Lennox Y4668 Genuine OEM Replacement Part

A Lennox Y4668 HN THX9421R5021WW RedLINK2 HD T-Stat delivers precise climate control, streamlining comfort management across the system.

Engineered for durability, real OEM thermostats and high limits maintain precise control and reliable cycling, helping prevent breakdowns caused by misreads, drift or poor fit
Product Type: Thermostat
Voltage: 50/60V
Hertz: 50/60HZ

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

Fits Models
Specs

Voltage:

50/60 V
Hertz (Frequency):

50/60 Hz
Length:

1 in / 2.54 cm
Width:

1 in / 2.54 cm
Height:

1 in / 2.54 cm
Weight:

Not Available