Hi there, currently in process of new build: 2 bedroom bungalow with EWI

Looking for advice for designing a dual Sunamp setup for DHW and UFH. Planning to run these with off-peak power and 2.3kw solar array

Cheers 

Welcome. I'm based in Mayo and have a Sunamp. Think I was the first in the Ireland to get one. Where on the 'westcoast' are you?

 

You don't need a SunAmp for the UFH. If you've decent insulation (which you should have if building to Irish regs) then you just can use a Wills Heater to heat the floor at night/off-peak and it will slowly release the heat throughout the day. This is what I have with 100mm of polished concrete floor that acts as a large mass and slowly releases this heat. The SunAmp just provides hot water. A wills heater is very cheap at about 50 euro compared to a Sunamp that costs thousands. Even if the wills heater fails after 5 years (and mine hasn't yet) it's a cheap replacement. 

How are ya,

 

I'm based in Cork, like that I'm starting out on my build. We are in the final stages of getting the mortgage sorted. We are going to go with an L shaped ICF house. I'm finding it hard to decide of the best way to heat the building and produce hot water. That SunAmp looks very interesting. Have you looked at the HONE system?, it looks very interesting. I'm also trying to figure out if I'm going to go for underfloor heating. I wasn't initially but being in one or two of them last winter, there seemed to be a lovely warmth from them.