Culligan Water Filter Cover

Protect the unit from UV and reduce algae growth

This is a cover for the Culligan WH-HD200-C Water Filter System.  This is typically used as a prefilter for sediment as part of a whole house water filter system.

What's nice about this filter system is the clear housing, which allows you to see when the filter needs to be replaced.  But the downside is that this also allows light through which increases algae growth.  After a few years of this unit being outside, I also noticed the plastic has degraded a little.  So I modeled a completed cover to both protect the unit from UV exposure and prolong its life, as well as reduce algae growth.

This is a large print .. it takes about a full 1kg of filament, maybe more.  I recommend printing with PETG.  PLA doesn't like to be outside. 

This design comes as three parts which screw together to completely cover the filter unit.  It is a pretty tight fit - it won't rattle.  It comes as 3 parts because my Bambu X1 Carbon's height capacity is just a tad too small to print this in two parts.  The tolerances on this design are fairly tight because the unit comes with a mount which barely pushes it off the wall.  So there isn't much room between a cover large enough for the unit yet small enough to clear the wall.  The failed prints on this were painful.

But .. it works pretty well.  It is low effort to twist off the bottom to check the filter.

No supports needed.  Included 3MF, Step and original Fusion 360 file.