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

Real OEM HVAC Parts Are In This Spring! SHOP NOW

0 Items

My Shopping Cart

You didn't add any products to Your Cart yet Continue Shopping

Important Update: Click here for the latest information on tariffs and their impact on our industry.

find parts
find manuals

Find Foodservice Equipment Parts

Enter keyword or Part #

Lennox 12U74 100503-13 THERMOSTAT-CC HEATER

How to get it fast to ?

Ship It!

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

Promotional Price:

401.16 C$ My Price: C$ 401.16

Add to cart

0 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

Quantity Available:

0

Quantity Available:

0

Manufacturer:

Lennox

Manufacturer #:

12U74

Parts Town #:

LEN12U74

Units:

Each

Fits Models:

View Models List

Lennox 12U74 Genuine OEM Replacement Part

100503-13 THERMOSTAT-CC HEATER

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

Length:

37 in / 93.98 cm
Width:

21 in / 53.34 cm
Height:

10 in / 25.40 cm
Weight:

Not Available

Find Foodservice Equipment Parts

Lennox 12U74 100503-13 THERMOSTAT-CC HEATER

How to get it fast to ?

Lennox 12U74 Genuine OEM Replacement Part

Part LEN12U74 fits 0 models:

New Customers?

Find Foodservice Equipment Parts

Lennox 12U74 100503-13 THERMOSTAT-CC HEATER

How to get it fast to ?

Ship It!

Lennox 12U74 Genuine OEM Replacement Part

Part LEN12U74 fits 0 models: