ASHP planning the big turn on day

MultiFuelBurner

Posting here to our banished, never to be seen section.............

In the sunny South the suggestion.is 16oC til 23rd October but with some single figure overnight lows.

So our plan and one that kept usage down last year is a little blast from electric fan heaters in the kitchen for those early mornings. No more than a total 2kwh and that takes the edge off those 6am get ups.

Until we start seeing the 13/14oC that's when we turn the system on to sit bubbling away on low weather compensation curve.

matt_drummer

I stumbled across this by accident!

Are you running it on LPG, heating oil, solid or some other fuel that isn't mains gas or electricity?

Reed_Richards

Maybe I live too far north but I never turn my heating off.  I didn't with the old oil boiler and I don't now that I have an ASHP.  If you use Weather Compensation you may be surprised with how tepid your radiators can be and yet still boost the warmth in your rooms when it's not all that cold outside. 

Ectophile

matt_drummer said:

I stumbled across this by accident!

Are you running it on LPG, heating oil, solid or some other fuel that isn't mains gas or electricity?

You can get LPG fired fridges.  And fridges are a sort of heat pump.  So maybe you can get an LPG fired ASHP.

MultiFuelBurner

matt_drummer said:

I stumbled across this by accident!

Are you running it on LPG, heating oil, solid or some other fuel that isn't mains gas or electricity?

I have skimmed too close to the sun recently to dare to post an Electric ASHP in the electricity energy forum 🤣🤣🤣

Reed_Richards

Somebody has been more courageous: https://forums.moneysavingexpert.com/discussion/6478161/ashp-running-cost

markin

MultiFuelBurner said:

Posting here to our banished, never to be seen section.............

In the sunny South the suggestion.is 16oC til 23rd October but with some single figure overnight lows.

So our plan and one that kept usage down last year is a little blast from electric fan heaters in the kitchen for those early mornings. No more than a total 2kwh and that takes the edge off those 6am get ups.

Until we start seeing the 13/14oC that's when we turn the system on to sit bubbling away on low weather compensation curve.

What is the lowest daily usage you can get if you just use the ASHP?

I was using 2-4 kwh per day in September and the first week of Oct using a single Air/Air to heat the house most of the day!

Reed_Richards

markin said:

What is the lowest daily usage you can get if you just use the ASHP?

I was using 2-4 kwh per day in September and the first week of Oct using a single Air/Air to heat the house most of the day!

This would be a difficult question to answer because the ASHP will most likely be heating the DHW throughout the year and you would have to turn that function off to measure what was just being used for heating.  Or maybe @markin should add-in the energy used for their hot water in order to make a comparison.

markin

If the water use is consistent, and the outside temp, it should be easy to see a 2+kwh a day bump from the house meter or the heat pump controlls, unless the is a large vampire load it should be better to get a cop of 2.5 - 4 rather than just useing 2 kwh on a fan heater, with unused rooms having the trv set low /off.

matelodave

My heating came on for the first time this year - less than 5 degrees outside

matt_drummer

I just looked at my heat pump data.

I have a Dakin heat pump and I fitted an Openenergymonitor system to it last weekend (electricity meters and a heat meter).

The outside temperature went as low as 7.6c last night but the lowest the house got was 18.4c at 06.35 this morning.

So the heating still isn't on.

Maybe tomorrow as the high is predicted to be only 10c and down to 1c overnight.