Recent content by benf

Simon: ASHP wasn't on my shopping list anyway. So there's no MCS installer involved and fewer TLAs (Three-letter acronyms) and ETLAs (Extended three-letter acronyms). My idea is to keep the main hardware of the existing heating system which includes some classic radiators, but change the...

Thanks. That was the boiler size calculator that I had used, but I must have got something badly wrong on inputting the figures. I tried again and got a figure a bit below the one you got. So, that's a lot more sensible and is close to the figure for heat demand that I was actually working on as...

Ah! The rads are cast iron. I doubt we'd get permission to change them to modern ones and we wouldn't want to. Heat pump plus buffer is one that I had considered earlier. I threw it out because it's considerably more expensive to buy/install and, because of not having oversized rads or...

I'll try to find another boiler sizing calculator. I admit I was very surprised by 56kW. According to Energy Saving Trust, 80% of installed air source heat pumps fail to reach a COP of 2.6, so that's more expensive than direct heating using Economy 7. Also, I understand that with a heat pump...

Just a sanity check. This is for a house in scotland, 2 storeys, sandstone, internal 9.5 x 8.5 metres and storey heights 2.8 and 2.5m. 2 bathrooms, 2 shower rooms. Currently, there's an ancient oil boiler and ancient oil tank. No mains gas. I want a heating system that will still be...

I did think so at first, but then I read somewhere that they get the water up to 50 to 55 degrees only, so when used with existing radiators will not provide the heat that the previous system did. Then I thought about having 2 heat stores, one for the water heated by heat pump and the second...

Hi folks. I'm looking for advice on renewing a heating system in an old detached 4/5 bedroom house in Scotland which will be used as a holiday let. Currently, it has an old oil boiler and the oil tank is looking in bad shape. My thinking is to move away from oil for obvious reasons...