Thin walled copper cylinders cannot withstand mains water pressure. Only steel cylinders can. An inexpensive solution for the existing copper cylinders is to reverse the role of the heating coil. The cylinder now contains 'dirty' high temperature heating water and the coil in the cylinder contains the fresh water from the mains. This is known as thermal store.
Storing water at high boiler temperature is energy wasteful. A one litre capacity boiler heat exchanger will cycle excessively to keep say 200 litre of water in the thermal store at 80 oC. This boiler cycling is also energy wasteful. The amount of domestic hot water generated is limited with this system. Hot water can spill into the roof tank causing even more heat wastage.
A normal mains pressure (unvented) cylinder stores water at 50 oC and therefore looses less heat. The boiler is heating water at much lower temperature than its own and cycles much less at all times compared with heating a thermal store. The whole process of heating domestic hot water is more energy efficient and less problematic. A much larger amount of hot water supply to taps is available on demand at all times too.

• Cutting continuous plastic pipe from the reel is sacrilege when not necessary.
• Systems with many hidden joints.
• Multiple manifolds and extra secondary pipe per floor.
• Wiring many manifolds and valves spread all over the floor.
• Inaccessible joints. Joints buried in the floor could leak. The one Pexatherm UFH manifold is usually situated unobtrusively and yet accessible under stairs or in the airing cupboard. All the pipe joints are at the UFH manifold.
• Small diameter pipes requiring more joints and more manifolds.
• Systems needing thermal store cylinders incurring extra unnecessary capital cost and energy wastage.

• High temperature water in floor and incorrect mixers. The IPPEC one UFH manifold with its built-in modulating mixer and pump is connected directly to the boiler.
• Burying pipes in tracked insulation. The heat output is reduced with the now well insulated pipe arrangement. We supply multiple groove heat diffusing plate. These high output black plates dissipate maximum amount of heat from the pipe into the room.
• Burying battens in the screed and nailing the floorboards to them, as Mr D. Mahon of London found to his cost. He had to replace the whole wooden floor. The maple wood buckled and cupped as it could not move with change of humidity. The air gap below caused by the crumbling screed reduced the output in that room. trust gravity and do not fix the wood to a screeded floor.