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Guarantee it won't be English size, this is the problem of people buying cheap crap from abroad, it's fine until it goes wrong. You'll be lucky to fix it I'm afraid. Wouldn't pay too much to bes as you'll end up having a load of spare bits.

Grant are the best of an average bunch when it comes to oil, avoid worcestor like the plague

Underfloor is fine for most floors, it's no good for laminate, but most real woods and engineered woods are fine, the wood you buy should actually state if ok for underfloor. Done a few massive houses with engineered and real wood all with uf

It's not even one for a plumber, you need someone with a g3 compliance certificate,

These kits are great http://www.underfloorheating1.co.uk/single-room-thermostatic-valve-kit.html

Yep lack of ventilation, loft insulation company's should now fit extra vent if required free of charge

I generally fit hitachi but there is a Samsung unit out in may that looks very impressive

You can actually still wire it so the over heat stat kills the power to boiler, then you cover all g3 without zone valves

There's a little debate at the minute where they say it doesn't make any differance which cylinder, let's be fair all unventeds are the same

Viessmann allow it as the boiler on max won't run above 90c

Ah biggest issue though make sure your boiler can take per heated water, a lot dont

I gather it's cos it's a Combi, you'll need a mixing valve. Caleffi do one not cheap though few hundred quid. Solar and combos work very very well

Manga booster by far on all accounts

If you have a 2 port anywhere that's where your going wrong on the 4 pipe, no controls apart from prog stat and cylinder sensor needed

Thermal with the fit payment from oct will outperform pv

Central heating water

Wrong, I've fitted two heat pumps recently that when costing up new oil boiler, tank and filling it, plus the grant of £850 they received from government it came out cheaper, plus running cost is working out just under half the cost of oil over oct-December

It works on hot water priority, so when hw is called for it concentrates solely on that, if it's a sealed system you shouldn't have an air issue, try turning the stat up to max for hw or take out the probe if used instead and let it run, also he needs to make sure the air vent on the pump is...

I'd supply and fit inc vat for between 3-4k

Never bother changing just the stat, always new immersion