I know nothing about them but willing to learn, economy to the fore ,
it will need run only about 3 or 4 radiators and heat water in winter (solar thermal does summer and helps all year round when its sunny... for 2 or 3 people s modest use 200 ltre ish open vented tank atm .
it will need run only about 3 or 4 radiators and heat water in winter (solar thermal does summer and helps all year round when its sunny... for 2 or 3 people s modest use 200 ltre ish open vented tank atm .