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Would this not introduce a thermal lag possibly taking hours for the room to get up to the desired ambient temperature ? Was this system not designed just to just take the chill off ceramic tile floors ? I wonder why my question was moved to Electrics from plumbing ? :roll: I would have...

Can anyone please offer advise on the cost-effectiveness of underfloor heating systems ?. We and several people we know are having conservatories fitted at present, and the others are unanimously opting for electric underfloor heating - I suspect because of the comparitively low initial cost (so...

Tanks for the reply - It's fully pumped. I've just found reference on the net to an Invensys LP112 (24 hour) ?

I have a cranky old RANDALL 3060 mini-programmer (24 hour) installed that has developed a fault. It's been in since I bought the house-from-hell 6 years ago, but it looks like its been around since pussy was a kitten :? Can anyone please suggest a direct replacement so I can just wire it in...

I'm not a professional plumber, but last year I replaced a hot water cyliner with an identical model. The job took half a day because althougth I thought the existing pipe couplings would mate exactly with the new cylinder, I still had to chop out some of the older pipework and solder in new...

Apparantly trivial issue but a damn frustrating one !! :twisted: I fitted a brand-new radiator last year costing 120 or-so quid and the bleed nipple sheared with hardly any force applied. The best design I have found since are rads fitted with nipples having a groove to take a flat screwdriver...

Eureka :) !. The clock is on a fused spur, and I forgot to switch this on a few weeks ago after flushing the CH - I'm certain the boiler didn't fire-up with the clock isolated. I guess this confirms it's a dodgy clock ?. Thanks a lot. less potty-me!

Oh, thanks a lot for your advice lads. I will attach a multi-metre on the supply cable from the clock to the boliler. Actually, I noticed last night that when the it's in this condition and I turn the thermostat up on the boiler, it also fires-up !. Can I still buy one of these old mechanical...

I have a potterton profile running a gravity-fed central heating system and a domestic (secondary) hot-water cylinder installed in the loft. I've noticed that the boiler still fires-up (although infrequently) when the mechanical timer is set to the TIMED position but during the OFF period when...