Introduction Combi boilers Open Vent boilers System boilers System Store boilers Controls Accessories Discontinued Products FAQ's Choosing The Right System Design Service   Sealed System with Unvented Hot Water Requires: 1 x storage cylinder (in the airing cupboard) 1 x system boiler Benefits: More than one hot tap / shower can operate at same time Loft remains a ‘dry’ area Considerations: Cylinder needs time to reheat once water run cold Recommended: Ultracom sxi, Flexicom sx, Glow-worm cylinders   Promotions Terms & Conditions | Rights | Legal Disclaimer | Site Map | Recruitment | Contact Us | News