Hot Water Cylinders
Hot water cylinders are a must with regular and system boilers, and come in a variety of sizes.
It is probably advisable, especially with a family, to have the largest you can find space for. The capacities can range from around 100 to more than 300 litres.
Check with your installer that the boiler you are buying will heat the amount of water you want to be stored, and how long it takes to heat the cylinder from cold - if you should run out.
Cylinders need to be well insulated to ensure the maximum heat retention.
Modern hot water cylinders come already insulated, but if you have an older version then it is possible to buy an insulation jacket from a good DIY store. The money saved through retained heat will ensure it soon repays the cost.