Lmst

ASHP: Domestic Air-Source Heat Pumps - Ensure that your ASHP installation is greener than mains natural gas for central heating and hot water (CH/DHW) in the UK. #ASHP #heatpump - https://www.earth.org.uk/air-source-heat-pump.html

Good news! The UK Government has removed one of the restrictions on heat pumps!
https://www.bbc.co.uk/news/articles/c3e5plqke3no

Hopefully this will mean more people being able to install energy efficient heating and reduce their dependence on gas.

#green #ASHP #EngergyTransition

ASHP: Domestic Air-Source Heat Pumps - Ensure that your ASHP installation is greener than mains natural gas for central heating and hot water (CH/DHW) in the UK. #ASHP #heatpump - https://www.earth.org.uk/air-source-heat-pump.html

In my part of the #UK, we had a couple of good #Solar days on Tuesday and Wednesday.

Certainly helps to keep the batteries topped up whilst still using the #ashp for heating as it's still cold.

Today is warmer, but much wetter with clouds both low and high. Meaning today is a bad day for #solar. My forecast is for a whopping 1.2kWh which will be a struggle and likely a missed target going by the day so far.

February is never a brilliant month for solar, but it does start to improve on better days because the angle of the sun and the amount of daylight is better.

Had a notification on my #Daikin #ASHP for a firmware update. Get maybe 2 or 3 of these a year, so they are improving things over time including the Onecata App.

Now on User Interface 7.7.0

However, there seems no chance any of these updates will actually promote energy generation and consumption in either the App or the Cloud API.
You can only get energy generation information via the MMI Control Panel, which is a pain because it's not the easiest interface to work with and for my setup, it's out in the garage.

I guess I should just shut up and be grateful I have heating and hot water and am not burning stuff at my property to achieve that.

I tweaked my #Daikin #ASHP heating schedule yesterday to try and get the house up to temperature all within the off-peak hours of my tariff from #OctopusEnergy
I didn't get it quite right, partly because I was too aggressive with the start time, and partly because it was another cold and frosty night.

I've added another hour to the schedule so it starts earlier. This should get the house up to temperature all within the off-peak period and not impact my batteries too much.

On the colder days of the year, as in anything less than, say, 4C during the day, my battery capacity isn't sufficient to run the household load and the heat pump heating for the entire day/evening until the start of the next off-peak period.

It isn't a big deal because there's perhaps 6 to 8 weeks a year that this happens. Certainly not enough to consider investing in more battery capacity which would never be worth it financially.

I benefit from the off-peak tariff, which is enough to offset many of the costs.

I've been working on small adjustments to my #daikin #ashp over the last few weeks.

By increasing Room Modulation from the default of 5 to the maximum of 10, I've been able to slowly reduce my flow rate temperature without creating problems either with the target internal temperature or additional cycling of the unit.

I have now reached the end of my tweaks as going further does create a small impact.
These are all small % increases in efficiency and work for my setup in my house.
But still, I've managed to reduce down from the 50C@-7C it was installed with down to 47C@-7C easily, and now with the Room Modulation as well, I've gotten this down to 44C@-7C for the Weather Compensation curve.

At best I would say this is an overall 10% improvement in efficiency and energy reduction because it's not wholly linear since there are some baseline flow rates required to achieve heating in the first place based on whatever the external temperature is.

Really awesome and informative blog by @energystatsuk

https://energy-stats.uk/whole-house-running-costs-and-stats-2024/

Thanks!
#solar #ashp #OctopusEnergy #ev

ASHP: Domestic Air-Source Heat Pumps - Ensure that your ASHP installation is greener than mains natural gas for central heating and hot water (CH/DHW) in the UK. #ASHP #heatpump - https://m.earth.org.uk/air-source-heat-pump.html

Moved the Legionella cycle start time from 1 am (as set by the installer) to 4:30 am so the cycle fits within the cheap-rate period of Cosy Octopus tariff. Hopefully this will shed a few pennies off my bill. #HeatPump #ASHP

Air source heat pumps: they work.

Right now at 23:12 (almost midnight):
Outside temperature: 10 C
Electricity consumption: 0.6 kW
Thermal energy: 3.9 kW

For the whole day:
Electricity consumption: 16 kW
Thermal energy: 77 kW

About 5x heat taken from the outside air. Remarkable.

Some of those 16kW were offset by solar panel production. I wish there was a good equivalent for roof wind turbines to cover Winter and nights; sadly none seem to actually work in the turbulent air around residential buildings.

#ASHP #HeatPumps #UK

@Simon318ppm @bazcurtis
We’re all electric now 5kW #SolarPanels , 5.6 kW inverter 9.6kWh #battery (GivEnergy) Induction hob #ashp #ev car and motorcycle On #octopus iog

The battery is fully charged over night @ 7p/kWh then any excess exported at 15p I don’t bother with force discharge unless free session coming up or winter saving sessions

This month electricity bill has been -£15, that’s for everything DHW, and 1200 miles, granted no heating

11 Years of Home ASHP, Kingston-upon-Thames London: Case Study - Learn from a home air-source heat-pump experience in greater London, UK, a decade in. #ASHP #heatpump - https://www.earth.org.uk/ASHP-case-study-Kingston-UK.html

Really detailed and informative post on running #Heatpump, #Solar, Time-of-use Tariff in the UK from @energystatsuk
https://energy-stats.uk/second-winter-with-our-vaillant-ashp/
#ASHP #Octopus #SolarPV #SolarBattery

Running my #heatpump for half the cost of a gas boiler… #ASHP
https://www.linkedin.com/pulse/running-my-heat-pump-half-cost-gas-boiler-rachel-lee-g9k4e?utm_source=share&utm_medium=member_android&utm_campaign=share_via

#ASHP

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