Hi group,

I am considering installing two 12kw air source heat pumps to replace
my old oil fired boiler.

The trianco activair units quote a start up current of 23amps which
then drops to 17.7amps for normal operation.

Question.

Will a modern 100amp consumer unit be able to handle this?

Will it be simply a case of having two 32amp mcb in the consumer unit
and feed each air pump with a cable from
each? For the coldest periods I would expect both units to be
operating most of the time therefore drawing 36amps.

How much current can you draw from a domestic supply cable? If one
consumer unit would be possibly overloaded could I simply have 2
100amp consumer units? One for the house and one for the air pumps.

Advice please.