Pros:

  • 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.

Cons:

  • 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.