- Lower space requirements as all the most important components are built in.
- Extremely economical, easy to install, and fit in limited spaces.
- Faster hot water response on demand.
- Loses heat if the cylinder is not insulated properly.
- Insufficient cylinder insulation results in waiting for the boiler to heat up again if you wish to take a hot bath.
- The size of the tank dictates the quantity of hot water at your disposal.