Fuel type Best time to heat How much to heat
Flexible taris with
price volatility (e.g.
Octopus Agile,
Economy 7 or
Economy 10)
You’ll want all of your
heating schedules to
run when electricity is
cheapest, during the set
o peak hours.
If possible, you’ll want
to heat enough water
to cover your expected
usage for the entire day
in one heating event.
Flat taris with no
price variability
(e.g. electric at
rate, indirect
sources such as gas
boiler)
The time you heat won’t
aect how much you
pay for the energy. To
minimize heat losses, we
suggest setting your tank
to heat to the required
amount just before the
rst expected draw
event.
Set your tank to heat
enough water at the
times you need it.
Be sure to put your
tank in “indirect mode”
through the App to
ensure gas is used if it
is cheaper than your
electricity tari!
How to achieve the most from your tank
Mixergy terminology key
• Hot water level: the % of usable hot water available, or state of charge.
• Draw event: any amount of hot water discharged from the tank.
• Heating event: a scheduled heating instruction set in the Mixergy App (e.g.
heat to 50% at 7am on Monday).
• Maintain levels: You can set your tank to maintain a state of charge between
a minimum and maximum level. If the level of hot water drops below the
minimum level, your tank will automatically heat until the maximum level is
reached. We recommend a level of 15% (min) to 20% (max) (electric/gas)to
cover any small draw event (e.g. washing dishes). For heat pump cylinders it
is recommended to set the max. to 100%.
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