When you first hear about water filter systems, you tend to think that a whole house water filter replacement cartridge will be about as big as your house. Some of the first point of use water filter systems for the home were indeed massive. But, like the computer, solar panels and chocolate chips, water filters systems have become smaller and just as powerful as their larger ancestors.

On the whole, the contraption is only about the size of your kitchen sink. And the whole house water filter replacement cartridges are even smaller.

How Many Do You Need?

Many water filters that connect to all of the water faucets in your home will come with a multiple filters. This pushes the water through a couple of filters before sending it out of the tap. In some brands, these filters are called the pre-filters and the main filters. The pre-filter will usually be smaller than the main filter. You need different whole house filter replacement cartridges for the pre-filter and the main filter.


Some of the best manufacturers of whole house water filter replacement cartridges (which also make the rest of the system, too, luckily enough) will offer you email or snail mail reminders about when it’s time to replace your filter cartridges. For a fee, they will automatically mail the whole house water filter replacement cartridges out to your home every six months.

That’s one less thing to worry about!

Do You Really Need To Change Them So Often?

If you want to have healthy water to drink and shower in, yes, you do have to change the whole house water filter replacement cartridge when the manufacturer suggests. Otherwise, what’s the point of having a whole home water filter system?

Think about it this way - aquarium fish are dependent on the water chemistry in their tank. They can’t jump out of the tank and drive of to the store to get more or better water. They are stuck with whatever is in their tank. This is why the filtration media in aquarium filters need changing so often. If that filter material isn’t changed, the fish will die.

Although we are not as dependent on water as fish, we still need our water to be as clean and pure as possible. Drinking or showering in water with heavy amounts of metals, chlorines or other pollutants can cause nasty health effects in the long term. For example, all of those chemicals can really irritate your skin and your hair. You need to get healthy water somehow in order to have a better quality of life. If you don’t stick to a regular whole house water replacement cartridge schedule, then it’s as good as living in a dirty fish tank.


In the long run, it’s a lot cheaper to get a whole house water system and twice a year get more whole house water filter replacement cartridges than it is to drink and bathe only in boiled or bottled water.

So, in the long run, your entire water filter system, let alone the whole house water filter replacement cartridges, is just the right size for you.

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