With so many whole house water filtration systems vying for your attention, it may be difficult to narrow down your choices. Homeowners who want to have clean filtered water for drinking, bathing and washing have many options, which can make their decision to buy a whole house water filter a rather difficult one to make.
To assist consumers eager to purchase a water filter for domestic use, we have compiled a guide on how to choose a whole house water filter and the things you should consider when deciding to install one in your home.
How big is your household?
The number of people living in your household is an important aspect to take into account when choosing a water filter. The higher the number, the higher the water consumption will be. This translates into the need to select a unit with a large enough capacity to meet your water consumption demands.
Purchase price and long-term costs
The initial cost of the system is not the only thing you should take into account. All filters need cartridge replacements and maintenance, which implies additional long-term costs. When browsing for filters consider the price of replacement filters and the frequency at which these have to be replaced. Some whole house water filters have more than one filter cartridge, with different filter lives. For example, the Ecopure PRO-II Whole House Water Filter System comes with three filter cartridges: an Ecopure Large Main filter, which lasts for 3 years, and two Watts 5 Micron Sediment filters, which last 6-18 months depending on carbonate hardness.
Water filters come in different shapes and sizes, and if space permits, you can purchase a larger water purification system. However, if your home is not large enough to accommodate a larger model, you need to look into smaller units, without compromising on filtration performance or capacity. The Ecopure Small Whole House Filter System is a compact model designed for smaller households, but has a flow rate of 25 litres per minute.
Know what you need to remove from your water and compare that information with the contaminant removal capacity of the whole house water filter you intend to buy. The most common contaminants that may be present in your tap water largely depend on your water source, but chlorine, fluoride, organic compounds (e.g. pesticides, herbicides) are the most common examples. Water hardness is also a common issue and in some cases, traces of heavy metals may also be present in tap water. It is advisable to test your water for these substances to be able to buy a filter that targets these issues.
A multi-stage filtration is always a good choice. These usually use several types of filter media (activated carbon, ceramic filter, pleated filters, etc.) to remove a wide range of contaminants and sediments. The quality of the filter media is also worth noting. Carbon block filters are superior to GAC filters, and coconut shell carbon blocks are a far superior choice to carbon filters based on other materials (e.g. bituminous).