Jersey electricity is delighted to be sponsoring this weekend’s ... All the clever stuff is included inside, so you don’t need to find space for a cold water expansion tank in the roof or a hot water storage cylinder in the airing cupboard or anywhere else in your home so that’s good news! Efficient; no energy is wasted. If the business you're looking for isn't here, add it! After extensive field testing, the luna duo-tec was introduced.