Loft water pressure issue

[Abdul Haque]

Hi all, I'll try and make this as simple as possible.

We had a new Megaflow pressure system installed, new pipes included.

When taps are run in the ground and 1st floor, there is no water in loft, otherwise we have good pressure in loft. We were told as a result, air gets to the loft, and hence we have random water sputter from outlets in loft only. We also hear a random whistling sound, sounds like air is being pulled, from only one outlet in loft. This outlet is located next to where the pipes enters the loft.

I paid good money to have this inspected by a plumber, he advised we needed a Grundfos home booster. The original plumbers who done the job have no clue. 40% of the budget remains to be paid to them.

I then called Grundfos, they confirmed with me we had a single pair of hot and cold pipe come from cellar, this is where the Megaflow is located, and then it branches out to all the outlets in the house. After confirming this, they advised no booster will help as this issue we are facing (sputter and whistle in loft) is due to how the pipes were laid out. He advised we needed an independent supply of hot and cold to loft from cellar (Megaflow) to even out the pressure from root point.

I'm planning lay new pipes from cellar to loft. But I need some confirmation. Can I get some thoughts on this please?

Thanks

 

[Abdul Haque]

After upgrading incoming 15mm lead pipe to 32mm blue plastic pipe, this has resulted in more flow and the pressure of approximately 2.5 bar stayed the same. Now we're able to run g flr kitchen, 1st flr bath, 2nd flr bath simultaneously. Will look out for the sputter/whistle issues.