OSO Delta is the most efficient cylinder on the market, and is the first "A" rated water heating product available across a full range of capacities. Delta achieves an "A" rating through minimisation of standing heat losses by using vacuum insulation panels (in an industry first) combined with 4th generation foam insulation.
- Full "A" rating across the range, in accordance with the ErP directive
- The most efficient cylinder on the market
- Helps housebuilders achieve SAP energy requirements
- *25 Year Guarantee on Tank - parts 2 yrs
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