I live in a three-bedroom bungalow and have eight radiators running off a Ravenheat CSI 85 Condensing Combi which was installed about 12 months ago. Myself and the wife have decided to have a loft conversion which will add three bedrooms and a bathroom, specifically 4 more radiators. Do I need an additional circulating pump or will the pump in the existing boiler be sufficiently strong enough to circulate the water.
Many thanks for your assistance.
Many thanks for your assistance.