More than one source of heating? Perhaps a back-boiler or wood-burning stove in addition to the central heating boiler then a twin coil cylinder will enable you to utilise both heat sources to provide hot water
Shower coil units which incorporate a mains fed heat exchange coil to service your shower providing power shower without recourse to expensive pumps.
Twin coil cylinders for multi heat source applications.
Horizontal cylinders where height is at a premium (e.g. in the loft space).
Maxistore units for economy 7 installations.
"Solar" cylinders for use in solar heating schemes.
Combination tanks incorporating a separate cold feed tank to service the primary circuit.
Boat cylinders and specialized units capable of operating effectively under potentially high pressure.
Mains pressure units are described in a separate section.
