"Cameron" wrote in message
...

Hi

Trying to decide how to heat my house - currently building an extension
- turning my 2 bed bungalow into a 5 bed house + a few other rooms

I would like a system that works well, efficient and relatively cheap
to install.



Efficient is more expensive, relative cheap may not be as efficient.

There are a ton of other questions that need to be asked and the manual
calculation need to be done for proper sizing and air flow.

Call licensed contractors and ask them for some ideas and bids on their
designs. People in your area probably all ready know the systems to stay
away from.