Everbuild P11 Central Heating System Cleanser, 1 Litre

There was an, almost, immediate improvement in the performance of the heating system. Much quieter and warmer. As it is an "old" system I'm leaving it in the four weeks recommended.

i bought this a while ago and after using in my central heating system i think i can safely say it has worked wonders. Before use i was experiancing some noise in the system and thought it might be a good idea to apply a cleaner such as the Everbuild. Just add to your system and use as normal before flushing out again after a several weeks then apply some inhibitor... remember to read and follow manufactures instructions at each stage. Well it was the best thing. No more noise and the radiators are all nice and hot as they should be during these cold winter days. Money well spent i would recommend to those confident with a bit of DIY maintence.

Used this to clear some stubborn limescale out through header tank immersion and starley Johnson water heater exchange which was not working almost, really bad. Fed through with low heat first for a few hours then put heat full up on gas then put electric immersion on hot. When flushed out I was surprised I never saw lots of hard bit of limescale come out but water was quite murky and system is working like new again. As the system is about 15 years old though it might need replacing and copper immersion at be 30 years? Or longer. See how it goes using bad of fernox softener in header to help keep new build up at bay. So I give 4 stars as pleased with delivery time and that it seems to have done an excellent job.

I was skeptical but followed the instructions and left the P11 in the system for a month withthe heating coming on daily. Subsequently flushed and refilled using some new P14. Most impressed, convinced the system is quieter now.

WHAT A DIFFERENCE, I used this after changing my Radiator in the Bathroom, and finding the water in the system was like Treacle Coloured, I put this in the Top of the Radiator in the bathroom, with it being the drained down one, and left it in my system for a month under normal working conditions for Start Winter/ (NOVEMBER) Then Start December, I drained the System again (AND OPENED THE BLEEDING TAPS ON ALL THE RADIATORS) SO WATER COULD FLOW) as it recommend, and what A difference, with draining the complete system at the Draining Valve, (NORMALLY LOCATED OUTSIDE OR AT ONE YOUR VALVES ON ONE THE RADIITORS) and you could see all the like wee fine pieces coming out in the water, I then ran the Filling loop tap and left the draining one open for a while top flush the remains away, I then filled the System and again and went and tightened up the Bleeding valves, and then one at time, I went round all the radiators, and with a jug, opened them and let the air out till I got the like Spitting water then tightened that one up and went to the next, What a difference, as all the Radiators now warm up and you can see the difference in the water when you look in the jug you used for bleeding. as its now crystal clear.

I used this as I noticed my boiler was running a high pressure and thought this was a cheaper attempt to resolve than calling out a plumber for the boiler. Nothing ventured........... Drained and left in for a few weeks as i was away with work and immediately saw the boiler operating where it should be. Now that could have been the draining exercise to get this in but either way with this and the inhibitor my system is running as it should as per manufacturers guidance but more importantly the house is warmer too!

It's OK

I bought this because i hIad noises every time I turned on central heating, my daughter was visiting us over xmas and she thought there was hailstones coming down, I said no thats the heating system. So finally got around to purchase this cleaner, up in the loft I go empty dirty water out of small tank about 2 buckets, the water was black with lots of small black bits in it. I tip the liquid into tank and refill. That evening I turn on heating and the noise has completely gone, Fantastic. In about a month when weather gets a bit warmer I shall drain down the system and flush it out, refill and add some inhibitor I Recommend this item. .