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A long while ago I had my car written off by a driver whose insurance firm refused to indemnify him because he put a wrong age on his proposal form. He had put 26 when in fact he was 29 ! I discovered that my policy had a new for old which covered my one year old car. So I claimed on that...

A much cheaper solution would be to fit a shower pump. Are you very sure that you will be able to continue to get cheap off peak electricity? Any unvented needs a very good dynamic mains flow rate. Many installers struggle to understand the needs. An open pipe flow rate is almost irrelevant...

It could be that another fault is detected and just shown as a flame failure.

The lower one would be used if on a cheap rate night time supply. Then the upper one would be used for a daytime boost . Or left on all the time to ensure hot water at any time.

Hydrochloric acid is the best way to dissolve lime scale and will do it quite quickly. Best supplied at a 32% solution. Only needs about 10% solution for a toilet bowl and as it produces calcium chloride that is very soluable and does not prevent the acid reaching the limescale. It can bubble...

What is wrong with biomass boiler? How many live there? It sounds to me that you are trying to heat more than is needed. Undersized is only with reference to the maximum heat requirement. The actual heat requirement is only about 100 Watts per square metre of occupied house.

Any central heating pump with the same connections can be used. Grunfoss are usually thought to be the best. CP53 pumps are now made with the brand name of Myson. If they have three speed settings then usually setting II will work fine.

150 li is not very large but it all depends on how many live there. You need to use the lowest immersion element. Often a switch labelled "boost" is only connected to an element near the top to give a small amount of water for washing up. You also need to measure your shower flow rate. Then...

Ideally the air side pressure should be chosen taking into account the average mains pressure.

Does the boiler fire up for a while before going to flame failure. If not then it could be an ( unusual ) PCB failure. Or someone has wrongly connected something.

It is always possible the pump has been replaced but fitted with the flow in the opposite direction. Normally the pump is on the output of the boiler pumping away from the boiler. Only on systems before about 1970 it was normal for the pump to be fitted on the return as the water was cooler...

I was quite lucky because the BBC decided to implement a PIE for those who wanted it. That stands for a Pension Increase Exchange. Basically they give you a higher increase now on most of your pension balanced by little increase in the future. It enables them to better budget for future...

If looking for quotes for servicing, it needs to be understood that British Gas ( and maybe some others ) only do a "Safety Check" which just involves measuring the flue gas parameters to ensure it is burning correctly and efficiently. A proper service as set out by the manufacturers is much...

I have had a look at the boiler details. It is a new design and has some slightly unusual features. It does not have a maximum power setting adjustment. So it can deliver between 6 kW and 27 kW of heating power at a flow temperature of 50 C. it automatically adjusts the power required to...

To service the boiler properly the combustion chamber needs to be opened and when that is done the seal has to be changed.

The yellow sheathed corrugated pipe is quite expensive and the fittings are very expensive. I do not see any reason not to use the PE pipe as long as it is only outside.

Your boiler probably has a setting which adjusts the heat input for the central heating. Has that been checked? There could also be a problem with the gas pressure at the boiler input.

It looks to my like glassfibre as used, not for insulation, but for making glassfibre repairs to boats etc.

So why would you want to fit an over sized cistern? Even most 6 li flushes can be increased a bit just by increasing the water level.

Not the same but at my terrace house there are cellars at all the houses. A neighbour had the basement converted into a bedroom anit an ensuite. But the installer did not fit a non return valve and the bedroom flooded right up to the ceiling a few years ago when the area was flooded by the...