[easy clean]

Does heating the water affect the tds in any way or does it remain at zero?

[TC1]

it stays the same!

[BORBRYCE]

Good question and it's not so straight forward. ie My cold water tap reading is around 35/ 45 ppm, yet my hot water tap is 60/90 ppm, so something is defo in the air, or water. It all comes into the house through the same supply pipe.

[TC1]

Good question and it's not so straight forward. ie My cold water tap reading is around 35/ 45 ppm, yet my hot water tap is 60/90 ppm, so something is defo in the air, or water. It all comes into the house through the same supply pipe.

That maybe because your hot water comes from a tank, that has sediment build up in? Just a thought

[mci services]

copper raises the tds I have a combi boiler so will check tomorrow and see if there is a difference. as there is no tank involved

[Nathanael Jones]

Good question and it's not so straight forward. ie My cold water tap reading is around 35/ 45 ppm, yet my hot water tap is 60/90 ppm, so something is defo in the air, or water. It all comes into the house through the same supply pipe.

Your TDS meter does not automatically adjust for temp.
TDS meters simply measure the conductivity of the water, and conductivity increases with heat so you get a false high reading. It'll still dry to a perfect shine.

[luther1]

Test the tds of hot water and let it cool down and test it again. It should give the same reading,apparently.

[Nathanael Jones]

Test the tds of hot water and let it cool down and test it again. It should give the same reading,apparently.

The waters tds will rise a point or 2 from exposure to pollutants in the air,.. but it should be nearly the same TDS when it cools.