A PCM store is a type of heat battery, ideal as a hot water solution. Internal materials (phase change material or PCM) store energy, which is then used to heat water on demand, rather than storing water like a cylinder would do. Although this is a newer technology, upfront costs don’t differ significantly from traditional solutions. You can also use both cheap night electricity rates and energy generated from solar PV to keep running costs lower. In terms of size, they are significantly smaller than traditional solutions and don’t require legionella cycles, so it saves energy compared to cylinders. There are a few different options of PCM similar to direct or indirect hot water cylinders, which mean they can be plumbed either separately or together with a ZEB.
Choose this if you’d like:
- Lower running costs
- The ability to take advantage of cheap night electricity rates
- The ability to store energy from your solar panels (PV)
- Lower space requirement
- Water on demand