Heat Pump Running Costs

Yes we know that. The point was yesterday he had all actuators off and no flow.

All systems work this way as far as I know.

Yeah see later, solar gain will def add couple degrees. Sounds alright to me if 22.5 since 5am, wouldn't have been solar gain at that time.

doesnt look great does it!

I've got the supply line down to 26 degrees with the temperature outside at 11 or so degrees. Having said that the house is still consuming 18 to 30 kWh each day over the past week. Without a Shelly EM I can only assume it's the heat pump. Is there anything wrong with the settings in the photos below? It's Thermia ITEC Eco 8kW heat pump. I'm running 1 open loop setup with the UFH.

The blue stuff is glycol I think so does the heatpump and rad heating water never mix? So could have the ufh flushed on its own (and not bother with the rads that dont need it) I had assumed the rust was coming from the towel rails as the rads are aluminium.

We had a NIBE, installed 20 years ago, very reliable and probably spent about 2k on maintenance over the last 10 years, just replaced with another one, not because it died but part of a major upgrade generally and advice from installer that it would start costing more to service and a newer one a good bit more efficient (partly due to getting a hot water tank half the size)

we had a lower cost option of refurbing the existing one but grant considerations made it more compelling to go for new one

Mind me asking what it costs to install a replacement?

Who services your ecodan? Only one I can see after quick search is in Cork.

Mine is 1.5 years old now. Presume I should get it serviced

The heat pump at the moment is barely ticking over. The house consumed 15.5kWh and 16.5kWh on Saturday and Sunday respectively.

The task of insulating the attic is complete. This time last month when there was no insulation over our heads there were days the house drew 60kWh from the grid. The HP was going red in the face lol.

Bought a Shelly and a few smart plugs the other day. One of the plugs is for the MVHR with the shelly lined up for the HP.

The insulation made massive difference to you, same as i noticed in my sitting room a year ago, now its probably my warmest room after adjusting flow rates a little the other day as bedroom's at 21/22 same as living areas so reduced flow to them.

Shelly EM. 120A CT connected to incoming mains in the distribution board and similarly a 50A CT connected to the Heat Pump MCB.

we're away for a week having left last Friday. before we went i switched off the option to heat hot water as we wouldn't be needing it but left the heating alone. prior to leaving the heat pump was using circa 10kWh in a 24 hour cycle. unfortunately i couldn't connect shelly to my home network before leaving so i'm blind to the heat pumps usage since however from looking at the data from ESB's HDF file i can see overall consumption for the house per day since we left is roughly 4 to 5kWh per 24 hour period or 0.21kWh per hour which is really low and i'm delighted with.

however, i'm struggling to make sense of the low usage if the heat pump is still coming on for heating. is heating the water in the tank when we're there really contributing to the bulk of the heat pumps power consumption? last week before we left the heat pump would come on for 25 minutes and then go off for 30 minutes and repeat this cycle throughout the day. what i don't know is how many times its coming on to heat the tank and how many times its coming on for heating in general.

the tank is 180 litres and i wouldn't consider our usage of water to be extreme (2 adults + toddler). what are other heat pump users seeing in kWh to heat hot water daily?

that could be the case for sunday but on saturday solar only produced 1.7kWh and yet the HDF file shows total consumption at 6.5kWh which suggests the Heat Pump is not pulling all that much from the grid. do you know how many kWh are used to heat your hot water?