Is a whole house water filter, always installed vertically?

The water line enters house near floor before entering pressure tank. Should I run lines vertically and install filter (as usually seen in pictures)?

  2 answers
  • Ken Ken on Dec 21, 2017
    As always the manufacturer's instructions take precedence.

    I have installed a whole house filter horizontally and it worked just fine. Biggest problem is when you change the filter. It is tough to keep the cartridge aligned with the fittings at the top because it tends to flop around as you screw the housing in.

    Water line horizontal, water filter vertical, is best if you can.

  • William William on Dec 21, 2017
    Pictures always show vertical install because it's the easiest and convenient. According to PUR, The filter can be mounted in any direction, including sideways or upside down. Keep in mind, however, that cartridge changes for upside-down or sideways mounted filters can be messy and clumsy.