ASHP bills huge

Pec123

 ASHP on 24/7 room temperature at 20 degrees C. Our flow rate is 40 operating on weather compensation. You can really tell on usage on a cold day. On Standard Online tariff due to solar panels. Our annual spend was £2459 three bedroom semi detached. Let us know what we are doing wrong.

Reed_Richards

If your electricity costs about 25p per kWh then you're using around 10,000 kWh annually, twice what I use for my 4-bedroom bungalow.

Your flow rate is 40 units of what? 

Weather Compensation is good if set-up correctly but perhaps yours is not?  Or perhaps your semi is badly insulated?  Or perhaps your heat pump is using immersion heaters too much?  

Pec123

Reed_Richards said:

If your electricity costs about 25p per kWh then you're using around 10,000 kWh annually, twice what I use for my 4-bedroom bungalow.

Your flow rate is 40 units of what? 

Weather Compensation is good if set-up correctly but perhaps yours is not?  Or perhaps your semi is badly insulated?  Or perhaps your heat pump is using immersion heaters too much?  

Your flow rate is 40 units of what? C

Have an Autistic son 5 showers a day/constantly using the tumble dryer he is obsessed and hot tub in summer so maybe that is it. I was just looking for a way to be more efficient! Maybe I can find a cheaper tariff.

michaels

Pec123 said:

Reed_Richards said:

If your electricity costs about 25p per kWh then you're using around 10,000 kWh annually, twice what I use for my 4-bedroom bungalow.

Your flow rate is 40 units of what? 

Weather Compensation is good if set-up correctly but perhaps yours is not?  Or perhaps your semi is badly insulated?  Or perhaps your heat pump is using immersion heaters too much?  

Your flow rate is 40 units of what? C

Have an Autistic son 5 showers a day/constantly using the tumble dryer he is obsessed and hot tub in summer so maybe that is it. I was just looking for a way to be more efficient! Maybe I can find a cheaper tariff.

Can you estimate how much hot water you use based on the shower temp (probably about 40C) and flow rate (time how long it takes to fill a 2l icecream tub) and total mins running to get total litres and then do litres x 0.03 to give you total kwh of hot water.

And you should definitely have a heat pump heater for the hot tub if you don't already have one!

Alderbank

You might be better finding a cheaper son!

Five showers a day, even using tepid water and little or no shower gel, is very damaging. He will remove the protective oils and flora from his skin and be susceptible to many skin diseases, and if when he develops psoriasis you will regret it.
People with autism like regularity and order, and things they can count. Tell him it's exactly one shower every day from now on at exactly the same time each morning and for exactly nine minutes.

Your son will be healthier and so will your electric bill.

The efficiency of your ASHP depends on the temperature gradient. For heating the recirculating water for your underfloor heating from 10-20C it will be fine, but heating tap water in winter from 5-55C it will really struggle and be far less efficient. Less efficient = bigger bills.

Strummer22

Pec123 said:

Reed_Richards said:

If your electricity costs about 25p per kWh then you're using around 10,000 kWh annually, twice what I use for my 4-bedroom bungalow.

Your flow rate is 40 units of what? 

Weather Compensation is good if set-up correctly but perhaps yours is not?  Or perhaps your semi is badly insulated?  Or perhaps your heat pump is using immersion heaters too much?  

Your flow rate is 40 units of what? C

Have an Autistic son 5 showers a day/constantly using the tumble dryer he is obsessed and hot tub in summer so maybe that is it. I was just looking for a way to be more efficient! Maybe I can find a cheaper tariff.

This post indicates the £2,459 spend is your total electricity bill, not just the heat pump. You need to work out what's using the electricity before you can best work out how to reduce the cost. 

Does the heat pump have any user menu where you can review electricity used and heat generated? You could then see what proportion of the cost is due to the heat pump. It might even directly tell you the efficiency (coefficient of performance, COP, and/or seasonal (i.e. annual average) COP, known as SCOP). 

Are the many, many showers using hot water from the heat pump, or are they electric showers?

As another poster mentioned, is the hot tub electric, or is that heated by the heat pump?

Do you use gas or electricity for cooking?

Any gaming PCs?

Any direct electric heating? 

Nick_Dr1

You need a cheaper tariff if you cannot reduce consumption. The heatpump is not the issue here. Mine is running at about 40 deg with weather compensation and is doing ok, probably matching oil costs, but this is down to me paying an average of 14p/kWhr. Cold days will hammer them (as with any heating system including gas and oil) but this is made up for in the the less cold days.

You should be able to split your solar panel export tariff away from your overall electricity bill, but at the rate you are using electricity I can't see you exporting any, so any solar tariff will be academic unless you are on one of the old FIT type schemes.

matelodave

As @Strummer22 suggests you need to understand what is using all the energy.

You really cant blame it on the heatpump. Keeping a hot tub cozy and chewing through gallons of hot water at five showers a day is probably going to affect your electricity consumption as much or possibly more than just heating the house

What temperature to you keep your hot water? Anything over 50-55degrees is likely to use an immersion heater as most heatpumps cant get any higher than around 55 degrees.
Electric showers will be even worse as they use direct electric heating. Just a 5 minute shower at 10 lpm will get through 50 litres a go, that's 250litres a day going down the drain.

Perhaps you should just heat the hot water tank once a day and tell your son that when all the hot water is used up there'll be no more until tomorrow. So once a day or cold showers might concentrate his mind a bit

Solar panels aren't really going to help a great deal at this time of the year. Have you got a smart meter to help you analyse what you are using an when.