Although, by just looking at their names, these two cartridges might appear to be similar, they are quite different in terms of their features and uses. Their differences have been explained below:
Where It Is Used
The first cartridge, which is the Moen 1222 one, is specifically meant to be used on Moen Tub showers and shower only one-handle faucets as a replacement part. It should not be used on showers of any other brands.
And the second cartridge, which is the Moen 1225, should only be used with Moen manufactured one-handle faucets. It serves as a replacement part for their bathroom and and kitchen faucets.
PosiTemp Valve Technology
The PosiTemp valve system is a special system made by Moen that helps to regulate water flow and deliver an adequate amount of water during showering.
It also helps to control the temperature of the water according to the user’s comfort level when he/she is showering. Not only this, but you also get the flexibility to select its hottest temperature setting before the installation process.
The Moen 1222 cartridge is very much suitable for any tub-shower faucet equipped with the PosiTemp Valve. On the other hand, the Moen 1225 cartridge is not compatible with this valve and should therefore not be used on any faucet which features this particular technology.
Construction
This is an important aspect of any product which determines its longevity and performance. If a product is made with cheap quality items, it breaks down quickly and also impacts performance during its run.
To ensure durability, the Moen 1222 cartridge contains both brass and plastic. Some of its parts that come in contact with water are made of brass, while some parts are made with plastic.
On the other hand, the Moen 1225 cartridge is fully made of brass since it constantly comes in contact with water and, therefore, requires protection against rusting.
Price
Every user considers the price before purchasing something. If a product does not meet your budget specifications, then no matter how good it is, getting it becomes difficult.
The price difference between the two Moen cartridges is leaps and bounds. One pack of the Moen 1222 cartridge is very expensive and costs more than 40 dollars, whereas the Moen 1225 cartridge is very cheap.
Surprisingly, the 1225 cartridge comes at a price below 20 dollars, which is much more affordable in comparison to its counterpart’s exaggerating price.