My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Lochinvar 100074280 High Limit Switch

Manufacturer

Picture for manufacturer Lochinvar

Part Number

100074280
6 reviews
Sale Price

$12.14

4 left at this price

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Lochinvar 100074280 High Limit Switch is a genuine OEM replacement part designed for Lochinvar boilers and water heaters. This critical safety component monitors system temperature and automatically interrupts the heating cycle when temperatures exceed safe operating limits, preventing dangerous overheating conditions.

Key Features:

  • Genuine Lochinvar OEM part ensuring proper fit and reliable operation
  • Safety switch designed to prevent boiler or water heater overheating
  • Compatible with Lochinvar and A.O. Smith heating systems
  • Automatic temperature monitoring and control functionality
  • Direct replacement for part numbers EKN34 and 319143-095

High limit switches are essential safety devices in hydronic heating systems. When water temperatures rise beyond safe thresholds, this switch automatically shuts down the heating process to protect the system from damage and ensure safe operation. Regular inspection and timely replacement of high limit switches helps maintain system reliability and extends equipment lifespan.

Easy checkout the purchase

The item came in and could have been packaged with more padding as one of the vent shades had a hole in it. Returned it for a replacement which I have not received yet and had the other item picked up. We will see how the next set of visors come in.

Shipping was great , everything went well , except the letters (Goodyear) where rubbed of and that's why I wanted them to match my rear tires . Maybe if you wrapped them so they didn't rub during shipping . I have a dragster that I take to car shows and perfection is looked at . Either someone returned them or shipping was really rough on them

Should have a mobile view

Product is as expected. No problems with my experience.

Easy ordering. Hopefully quick shipping

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy