Hi,

I have a Daikin Altherma HT ASHP and have been experiencing higher than expected electricty bills. So I bought an energy monitor and the reason became apparent immediatley.

When the system is doing nothing i.e. niether space or hot water heating, it is still consuming 200w per hour. This doesn't sounds much but it soon adds up over a month and is a significant increase on my bill :-(. When the system is operating (space or hw) the consumption seems normal.

The system is literally doing nothing - both the indoor and outdoor unit are silent and inactive. Is this idle consumption normal? For a tecchnology that is supposed to be energy efficient and green, it seems alot of consumption for no benefits.

The 200w consumption is roughly spit equally across the indoor and outdoor units. Any advice much appreciated.

tks