They are water heaters/water softeners that fall directly into the plumbing of the house to filter any water coming into the home and filter / soften it until it reaches the stage of use. All water, for example, includes bathtub water, washing machines and perhaps wastewater.
Whole house filters Shower filters and usage filters are like an additional point of use, but instead of filtering the water at the time of use (such as a container or shower faucet) the filters are connected to the actual pipe of the house where the water enters. It works that any water coming into the house passes through the filter system of the whole house, resulting in the water used in the house being filtered.
Image source: Google
Like shower filters, these cartridges need to be replaced at the end of their lives, but because too much water is passing through them for use throughout the home, they need to be replaced more regularly. These cartridges are much larger than shower filter cartridges so they are more expensive.
Since whole house filters have the same type of filter media as shower filters or basin filters, they remove the same types of contaminants as; Chlorine, heavy metals, pesticides, etc.
Whole House System vs. Point of Use System, such as shower filters, when comparing many pros and cons.
Owner or Renter
When considering either a full house filter or a full house water softener vs. a shower filter, the first consideration is whether the house is for rent or not. The installation of the entire house system requires expert skills and equipment from the plumber.
Set up Cost and On-Going Cost
Entry-level systems themselves may vary from #200 upwards. As it isn't feasible to install the machine oneself the expense of installation by a professional plumber also has to be considered. As Whole House Filters and Whole House Water Softeners possess greater potential than shower filters, the capsules they use will also be a lot more expensive.
Whole House vs. Point of Use
Whole house filters and whole house water softeners will offer filtered or soft water for the entire home, even for situations in which you do not demand filtered or soft water. Scenes such as washing dishes, toilets, watering crops and sanitation do not require filtered water.