Will a reverse osmosis filter fit under my sink?
How to measure the space for a filter and tank under your sink, and decide whether you need a pump.
Measure around the plumbing
In one small kitchen in Filac’s installation gallery, the tank fits beside the sink trap and the filter housings sit along the right wall. In your kitchen, a deeper sink bowl or a drainpipe could take up that same space.
Open the door and measure the width and depth of the free space. Where the tank might stand, measure up from the cabinet floor to the first obstruction. A photo taken straight on, with the cold-water valve and sink trap in view, helps an installer make sense of the numbers.
Allow for a separate tank
Filac’s reverse osmosis models with and without a pump come with a separate 12-litre tank. To check whether it will pass through the cabinet opening, ask for its outside diameter and height, along with the dimensions of the filter assembly.
Think ahead to the first cartridge change. With the tank in place, can the installer unscrew the housings and get the cartridges out? Can you still reach the shut-off valve yourself?
Check the pressure before choosing a pump
Filac lists an operating range of about 2.8 to 5.5 bar for its model without a pump. The version with a booster pump works from about 1.4 to 5.5 bar. If the tap tends to run more slowly in the evening, mention that when arranging a visit. The installer can measure the inlet pressure as well as checking the fit.