You are building fromn scratch - easy to pipe for a boiler stove.
You are laying out the details of the house so you can have high spec elements where ever you want to spend the money.
As fear peile says - insulation is the key.
Whatever the minimum Building regulation says to use - you should exceed it.
If we have the stove going the day before, the house temp stays at 15 celcius the whole of the next day, depending on door traffic.
Go mad on the stuff. It's cheap to do now while the house is being built. No good retro fitting it in ten years.
Gas prices are only ever going to increase.
I have a setup like fear peile but I have no immersion and the gas boiler on the wall is an expensive ornament.
I haven't finished even plumbing it. I have no immersion or electric showers.
stove is a Hunter Herald 14 boiler - 12 rads around the house.
If you want heat for water or the house - the fire is lit a couple of hours to heat the cylinder (240Lt triple coil).
I too have hopes for solar down the road when it's a fair price and works better.
Fuel for the house.
Mainly wood. We are up and running here 2.5 years. There are 6 of us.
2 teenagers who see a full cylinder of hot water as a challenge to empty and I have to wee people.
The mindset of planning the use of hot water is something we all got used to very quickly. We chug along nicely.
I have bought 3 bags of coal in 2.5 years (low on wood and it was just quicker. The gas bill for the cooking (no heating) is €60 for the calendar year.
If you put in a stove and intend burning it to heat a room, then you might as well pipe the heat up to the cylinder. Otherwise it goes up the chimney.
As you might have read up on the Systemlink, you can use a gas boiler and a stove at the same time if you want quick hot water.
And you can pick what zone to heat - rads or hot water or both. Depends on your zone setup.
If you think a stove can't pull it's weight, I have had the cylinder temp up to 84deg celcius several times here.
You can make tea with the water. Master thermostatic mixer valve keeps it safe.
Sit down with a good plumber (old school back boiler/stove type) and chat to him.
Lots of helpful stuff on these sites.
[broken link removed]
http://www.kingspaninsulation.ie/Literature/Refurb-Guide.aspx
http://www.kingspaninsulation.ie/Literature/Futureproof-Guide.aspx