The Ibaiondo central heating system most commonly used in Europe and other parts of the world is a sealed system. Ease of installation, as a sealed system alleviates the need to fit, feed and vent tanks in the central heating system.System flexibility - due to component siting alternatives cost savings - due to considerably reduced installation time no feed and expansion tank - hence avoiding ‘pumping over’ problems, risk of freezing up etc. longer life - due to virtual elimination of corrosion problems noise reduction - due to higher system pressure, boiler noise (localised heating) is significantly reduced or eliminated low maintenance cost - as equipment is virtually maintenance free, other than for periodic operational checks