Wa­ter heat­ing

HOUSE­HOLD EN­ERGY CON­SUMP­TION: 30%

Element - - Wellbeing -

POOR

Con­ven­tional elec­tric hot wa­ter cylin­ders: Of­ten poorly in­su­lated, th­ese are in­ef­fi­cient. Older, smaller (<180litres) and low pres­sure cylin­ders are par­tic­u­larly bad of­fend­ers.

BET­TER

In­stant elec­tric wa­ter heaters: heat wa­ter on de­mand where it is used, elim­i­nat­ing loss from stor­age cylin­ders and pipes. Gas hot wa­ter stor­age sys­tems: more ef­fi­cient than elec­tric cylin­ders and not af­fected by power cuts. Gas on­de­mand sys­tems are even more ef­fi­cient. So­lar: so­lar has high in­stal­la­tion costs, but low run­ning costs. Free hot wa­ter when the sun is shin­ing, but you have to re­vert to the tra­di­tional hot wa­ter cylin­der when it’s not.

BEST

Heat pump wa­ter heaters: Moder­ate in­stal­la­tion cost. Three to four times more ef­fi­cient than elec­tric wa­ter cylin­ders. Can knock 66% off your hot wa­ter bill.

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