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