Help!! Air source heat pump costs

Alnat1

Dishwasher and washer might have Eco settings, do you use them? Won't save a massive amount but it all adds up

MrsBeee

Yes, I use dishwasher eco setting and washing machine I use the short daily wash rather than the 2+ hour cycles, never had an issue with cleanliness using either on the eco settings. 

When I bought the appliances, they were very energy efficient, however I expect appliances have improved with the new ratings recently. 

Alnat1

TBH I use the quickwash too, easier to time the heating part with my solar.

I really hope you can get this sorted, you're so efficient with everything it's not fair you have big bills.

Coffeekup

I'm pleased you're on it and have appeared  found the culprits. Please report back and let us know your usage for the next few days, It's intriguing to know how much of a difference it all makes.

MrsBeee

We’ll it hasn’t gone to plan so far.
usage yesterday 17.42kwh
usage Tuesday with the immersion on 24h 16.63kwh!! 

Evan3020

Have you switched the heat pump off?

Leon_W

Evan3020 said:

Have you switched the heat pump off?

This. Pick a suitable period and turn it off for 24hrs. Meter read before and after.

sully1311

MrsBeee said:

Yes, I use dishwasher eco setting and washing machine I use the short daily wash rather than the 2+ hour cycles, never had an issue with cleanliness using either on the eco settings. 

When I bought the appliances, they were very energy efficient, however I expect appliances have improved with the new ratings recently. 

Just to say it might be worth checking your washing machine manual to see if the quick wash is cheaper to run than the eco setting. With a quick wash the washing machine will heat the water as quickly as possible, which could cost more than the eco mode. 

Evan3020

Maybe but there is something taking 17 kwh a day and its not the quick wash cycle.

Mstty

Accounted for already by the OP

2kwh just for having the heatpump.in standby (appears to be a known Daikin vampire issue)
3kwh hungry Fridge Freezer

3kwh hot water (estimate but could be more depending if the backup immersion kicks in) add another 4Kwh on Legionella burn day.
1.5kwh washing machine

1kwh electric cooking

What are we up to

10.5kwh accounted for and 14.5kwh on Legionella burn day

So some TV and router add .5kwh

It might be worth the OP getting a tapo p110 energy monitor and leaving it a device for 48 hours and recording the usage.