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how many rads are downstairs and how many are upstairs, how old is the system, has it always done this, and are the flow and returns of at least 22mm under the floor :?:

No offence, but, if you don't know how to lift floors or work out rad sizes what makes you think you can install a heating system :shock: Best advice is to get someone who can lift floors etc, you can end up splitting chipboard up all over the place if you don't know what your doing with it.

Why don't you just stump up £25, it's been recommended, it will cost a lot more if you keep pi55ing fiver's down the drain if the cheaper ones don't work :roll:

I hope for your sake you will be getting someone to install it as it seems you do not show a great deal of UFH knowledge :shock: Speak to Nu-heat, they as well as other company's do 1 zone packs to cover single rooms etc, the manifold will have the extra pump needed, do somemore research. :!:

agree with corgiman, think you'll have trouble finding an engineer to install a non supplied part, i know i wouldn't :!:

is the cold on the bathroom mains or tank feed :?:

isnt there supposed to be some sort of cage round it to now, soon you wont be able to climb into the loft to service the damn things soon once they are fitted there :roll:

The 600 model, megger wide waterways through the heat exchanger and whisper quiet. slightly higher and deeper than a vaillant but narrower, if youv'e got the space go for these. :)

do not overlook the buderus, very good heat only open vent boiler, comes in three sizes 11Kw, 19Kw, 24Kw, would highly recommend these over most of the other makes :wink:

if it's a salt glaze collar chances are the plastic cap on the last post might not fit properly, best way is to remove W/C, if you have to break it out, if it's cemented in, be careful not to loose any pieces of W/C down the old salt glaze, stuff bags down or something to block off the svp, once...

the divvy valve on these are the same as the baxi equavalent, the baxi product is cheaper than the alpha part, alpha's have always been expensive on spare parts, the valve can also be rebuilt, it's up to you if you want an engineer to replace or repair. I truly beleive in a fair days work for...

do any of the traps gurgle when the toilet or anything else is used and the plugs are released, you could be getting the traps pulled out and therefore the smell from the svp coming up through the traps :(

no, this is not neccasarily expensive, you haven't mentioned, pipework, lagging, fittings etc, these all cost money, i can only assume this installer is supplying all thi, that then doesn't mean he is earning £ 400 pounds for a days work, it sounds reasonable if he he does a good job, do you...

by this i mean that if someone starts to query your expertise and they know little or nothing about your job, there either not happy with your work or they may well be trying to knock your price down, this pipework situation must have been discussed at an earlier stage. whichever way, i would...

can't open the link :?:

softus, not here to have a slagging match, but you have overlooked the OP first sentence as i had overlooked the pillar taps, there must be a negative head situation for the hot to be pumped, still is better if fitting a pump, to pump both hot and cold, if not for now, as you suggested the OP...

every body always wants to replace a boiler with the cheapest possible option, bet your friend drives round in the dearest possible car :roll: they can still put in a more expensive boiler and make the new purchaser aware of exactly what he's/hers fitted never know they might feel more...

Have had a monsoon pump (negative head) installed to pump hot and cold to upstairs loft en suite bathroom. Consisting of bath, basin and WC. (No shower you have not told us whether or not you have mixer taps, this will determine whether you would be better off with balanced pressures, i would...

check out your home insurance policy is up to date, if you have plastic pipework without inserts, whichever fitting you are using, if you don't know how to make a competent/safe connection then get someone who does, after all you would not attempt to drive a car without the knowledge of basic...