40278 Water | Softener

Contains 1.11 cubic feet of high-capacity ion exchange resin. Core Technology: IntelliSoft™ & DIR Unlike older timer-based models, the

Typically rated around 40,000 to 46,000 grains , making it suitable for families of 1–5 people.

This is the most common failure of the 40278. The small drive motor or position switch is dead. You can buy a replacement motor separately ($30), but most homeowners replace the entire valve assembly for reliability. 40278 water softener

Have a specific question about your 40278 water softener? Leave the error code or symptom in the comments below.

This size is ideal for larger households (4-6+ people) or homes with significantly high water hardness (30+ grains per gallon). Durability: Contains 1

Here’s a breakdown of what that part is and the helpful features to look for regarding it:

A 40278 water softener is built to last 10-15 years, but only with proper care. The small drive motor or position switch is dead

Why is the 40278 specifically so popular? Because the bypass valve is the most common failure point. You may need this exact unit if you notice: