There are a number of rainwater harvesting kits available from manufacturers and installers, ranging from small tanks to larger ones. If you have the know-how then it is possible to install the system yourself, but it pays to know what you are looking for.
You can opt for one that sits above ground at the side of the house or building or one that is buried in the garden. If you are opting for one that is below ground you will need to take into account the cost of digging and installation. If you are opting for a gravity fed rainwater harvesting kit, or a hybrid, then you also need to find out if your loft space or roof can take the weight of a full tank on it.
Vinyl offers both kind of Rainwater Harvesting Kit.