Re: Re: Space and water heating

[Nick Grant]

Just to pick up on the part load issue, I'm not convinced this needs to be an issue with a well insulated house with even a little thermal mass (think plasterboard and skim) and a reasonable size hot water store (good idea to make use of solar).

We run our winter space heating using a simple Clearview stove. Even at full pelt we dont suddenly overheat as the walls and ceiling absorb the output. Stove goes out (we dont turn it right down so it would smoulder) and next morning the house is a pleasant temperature.

Same could apply to gas, perhaps with very simple underfloor heating. Put in x kW from smallest boiler for say 30 mins, 1hour then turn off?

Rather like the boost and coast of motor mileage marathon vehicles where an oversize engine is used intermitently because tiny engines are less efficient.

I can imagine a problem with rads and trv where one rad is on and boiler cycles because it can't loose the heat quick enough.

I have never lived in a house with gas so may be talking bollocks.