Why is using pure water for cleaning windows better than tap water?
Beautiful smear free windows with less effort
After using tap water to clean your windows, there is often a residue left behind once the windows have dried. Jeff’s neighbour has mentioned that every time she tries to clean her kitchen windows with tap water she has to give it 3 passes – the first one to get the grime off the windows, and another 2 passes, each done with a clean dry cloth, to finally provide a reasonably clean window.
Even after this effort though there is still usually a faint smear which can be seen in certain light and which is caused by both the natural minerals and contaminants that exist in the water and probably some of the original window grime.
Removing the natural minerals and contaminants from the tap water to make pure water to clean your windows, means that you have a much better chance of attaining beautiful smear free windows with less effort.
Using a Reverse Osmosis water filter to make pure water
Using a reverse osmosis water filter helps to remove natural minerals and contaminants from the tap water. Reverse Osmosis – often referred to as RO – does this by pushing the water under pressure through a semi-permeable membrane. The membrane catches the salt minerals, organics, bacteria, pyrogens and heavy metals while the water molecules pass through, resulting in pure water.
Jeff’s well used system is shown here with the prefiltering system next to the Reverse Osmosis system. Prefiltering tap water enables the Reverse Osmosis filter to last for longer and helps to reduce Jeff’s costs.
Pure water works more effectively to clean windows than tap water because it has no minerals or contaminants in it.
- It therefore doesn’t leave a residue of minerals or contaminants on the window and
- It is able to absorb impurities on the window that obstruct the view such as dirt, grime and other matter more readily than tap water.
Does using pure water always leave windows sparkling clean?
Using pure water to clean windows means that you can’t see any dried water droplets or streak marks left on the window when it is dried. There may however be times when this doesn’t happen without a little extra effort.
- If, for instance, the windows have old window seals, this may allow the water to mix with dirt from under the seals before running down the window and leaving streak marks near the seals of the window.
- It is much better not to have your windows cleaned on a windy day. Fine particles of dust or smoke may contaminate the pure water droplets which may be visible when the window has dried. If windows are near the ocean and being cleaned on a windy day, salt particles may also appear as residue.
These issues can easily be fixed by rinsing the windows again with the filtered pure water.
How does Jeff use pure water?
Jeff’s pure water filtration system is connected to a carbon fibre extension pole that can reach to 10 metres. Jeff uses this pole to clean high windows, balconies and solar panels as these are the glass areas that are often inaccessible for drying with a cloth.
Why not use pure water all the time?
Using the Reverse Osmosis filtering system can be expensive because the semi-permeable membrane needs to be changed on a regular basis to maintain its effectiveness. Jeff is able to pass on his cost savings to his clients by using pure water only when it is most effective, and at other times using cleaning methods that suit the purpose better.