When choosing a whole-house water filter, consider the flow rate of your appliances and the contaminants present in your water. Ensure also that the filter you chose is National Sanitation Foundation certified.
The flow rate of your appliances determines the right flow rate of the filter. A water filter system with a flow rate lower than the required rate causes interrupted water flow, and low water pressure, especially during peak use.
Identify the contaminants present in their water to ensure the installed filter is the right one to remove them. The concentration of the sediments in the water determines the life of the filter before being replaced.
Ensure that the filter is National Sanitation Foundation certified. NSF tests water filters to ensure they comply with specific standards for safety and performance.