Fed up of plumber's charging me for a supposed flush and then it not doing much so called B,gas. their flush comes with a lifetime insurance so if required in 7-12 yrs time if you need a proper 7-8hrs powerflush again it's free! Now my rads are hottest ever !
 Dave Carter
 August 2010
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Yes
michael
February 2010
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No i have just had mine done £300, the equipment is expensive and the conections for the flush are complicated. Various chemicals have to go into the system while the flush is taking place and then have to be tested to make sure they are out of the system. this is not a diy job!!
GARY HART
February 2010
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easily done. but not so easy to do it properly. Special chemicals needed and could take a day for them to work. Recomend gettin a plumber. they have the pumps and equipment needed.
Mark
January 2010
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do you leave the pump on when flushing so that the dirty water can get into the system from the boiler?
Alfie
January 2010
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Question for sexy richard the plumber:
Richard - When you say drain off enough water to from the central heating system, what do you mean by this?
Do you simply bleed a radiator into your hose pipe?
Richie9
December 2009
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ITS SIMPLE-EVEN IF YOURE A NOVICE.
FIRST OF ALL,IF YOUR RADS ARE HOT UPSTAIRS AND COLD DOWNSTAIRS,THERES A GOOD CHANCE YOUR PUMP NEEDS REPLACING.
BUT IF YOU HAVE AIR IN THE SYSTEM YOU CAN EASILY REMOVE IT BY CONNECTING A HOSE-PIPE TO A DOWNSTAIRS RAD AND FLUSHING IT OUT.TO DO THIS,FIRST TURN OFF THE RAD,THEN IF YOU LOOK AT THE BOTTOM END OF THE RAD YOU,LL FIND A LITTLE NOZZLE WITH A SQUARE PIN INSIDE-OPEN(TURN ANTI-CLOCKWISE)THE VALVE,A LITTLE WATER MIGHT COME OUT SO HAVE A TOWEL UNDERNEATH.THEN PLACE THE HOSE OVER THE NOZZLE AND RUN THE HOSE OUTSIDE,USE A JUBILEE CLIP TO SECURE IT TO THE VALVE IF POSSIBLE-THEN TURN THE RAD BACK ON.20 MINUTES SHOULD DO IT-DONT FORGET TO TURN THE RAD BACK OFF BEFORE REMOVING THE HOSE
BOBS YOUR UNCLE
November 2009
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my exspanshion tank is driping i hade b/gas out think its the pipe blocked with hade water how do i flush it out
howard
September 2009
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how to flush heating system
gary
July 2009
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wot would happen if you don't remove the system cleaner
john
February 2009
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I Have a Worcester Heat Slave combi 18 yrs old and am looking to replace with condensing combi.
Would like to flush my system and replace TRV's and Lockshield valve my self to save some money.
Is it his reasonable? I am good at DIY and have most tools.
I realise that this system is unvented, does this make it harder to do? any explanation welcome. Thanks Martin
Martin King
August 2008
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i would say the best thing to do is to drain all the water out using the drain off. then turn off all the rads and remove them all then refill your system with some c h system cleaner then put it on full wack take all ur rads out side and connect up to ur out side tap via a hose and blast water through them till there clean then re hang and connect up but not opened the rad valves then connect up ur hose to ur drain off and allow water to slowly come out in to a drain then after 20 min turn off the boiler turn off drain off and alowe to cool for 10 mins then drain all water out of system by shuting off the feed to the f and e then re fill system and pump for five mins then drain down shut drain offs and then add ur inhibitor to the f and e and allow refillling then go round open all rad valves and blead all the rads after doing that restart boiler and it should work ok for year after a week or 2 go round and vent the last little bit off air in the rads
sexy richard the plumber
September 2007
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Come on, give the British Gas Engineer his commission... Ask them for a water sample first - They use Salamander which is an external company and is worth the wait as it will explain whether or not a manual flush could restore the problem.
Ok... As for whether or not you can do it yourself:
Powerflush = Not unless you are very good at DIY or just stupidly brave.
Manual flush = Only if you are confident at draining and filling your c/heating system.
I'm not going to explain powerflushing as I think that novices should stay well clear as doing it properly takes good engineering judgement and skill to not splatter the walls in the sludge you will be removing.
Manual flush; pop down your local plumb center and pick up a bottle of "desludger" or "system cleaner" and a bottle of "inhibitor" check with the merchant the quantity required for your system size (Make sure you know how many rads you have)
Rush home with your new items and put the system cleaner in the header tank in the loft; get your hose out the shed and drain off enough water from the c/heating to ensure that the entire contents of the header tank are pulled into the circuit.
Check the instructions on the bottle; most are 4 weeks maximum "in-system" time... Run your c/heating as hot as you can for this period, then, simply drain the entire system... Fill it with fresh water and let it run for a few hours... Then drain that again... Then add the inhibitor; and fill... Job done.
Alternatively; get 3 quotes to go with your b'gas quote from REPUTABLE plumbers in your local area - Do not search the yellow pages unless you know what you are looking for... Make sure the plumber carries adequate insurance for the job and ensure that they sheet up before commencing work.
GasAid.co.uk
January 2007
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