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My DIY Heat Pump installation

 
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Air Source Heat Pumps (ASHPs)
Last Post by Toodles 5 months ago
49 Posts
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Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Famed Member Moderator
Joined: 4 years ago
Posts: 1759
10/11/2025 9:16 pm  

Posted by: @batpred
↑

Our setup does not include a heatpump, but @majordennisbloodnok has lots of experience in controlling this type of devices. 

In fact, whilst I do have experience getting things talking to other things (IT background and certainly enough knowledge and sense to avoid any claim of “genius”), I don’t do a great deal of actual controlling of my heat pump. There are plenty of others here much better able to advise on weather compensation settings.

However, in order for them to have a fighting chance, some screenshots of the device now set up in the app would be good. @polar-bear, your phone should have an on/off button on the right hand side and volume up/down buttons on the left hand side. If you press the on/off button and the volume up button at the same time, you’ll take a screenshot of whatever’s on your phone’s screen at the time. If you can take screenshots of all the bits of heat pump info and settings you think might be relevant in the app, then upload those screenshots here we collectively should be able to decypher the important stuff.

A word of caution, though; do take a good look at each of the screenshots and check it for personal info before uploading. If any screenshots show your name, email, phone number, location etc., don’t upload them, or at least not until you or your wife have done a bit of photo editing to blur out that info.


105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
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 Grantmethestrength
(@grantmethestrength)
Reputable Member Member
Joined: 1 year ago
Posts: 184
10/11/2025 9:21 pm  

Also if you have a copy of the manual it would be useful to see it. The ones I have seen are really badly written and make no sense lol!


Kind Regards
Si
——————————————————————————
Grant Aerona3 13kW
13 x 435w + 13x 480w Solar Panels
Sigenergy 10kW Inverter
25kWh Sigenstor battery


   
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Polar bear
 Polar bear
(@polar-bear)
Eminent Member Member
Joined: 1 year ago
Posts: 21
Topic starter 10/11/2025 11:10 pm  
IMG 0620
IMG 0609
IMG 0610

Attached photos of the pages that come up on the app

Also if you google AIROSD manual the next page comes up and this download is the manual that I have

IMG 0613
IMG 0614
IMG 0611


   
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Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Famed Member Moderator
Joined: 4 years ago
Posts: 1759
10/11/2025 11:17 pm  

…and I’m assuming the “more” option on the right of the menu at the bottom of the second picture is the option that prompted you for a password?


This post was modified 6 months ago by Majordennisbloodnok

105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
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Polar bear
 Polar bear
(@polar-bear)
Eminent Member Member
Joined: 1 year ago
Posts: 21
Topic starter 11/11/2025 6:32 pm  

@majordennisbloodnok 

The 'more' button takes me to 

Setting/schedule/advance/version

It is the Advance that takes me to a password page....that's when I panic!

 



   
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Polar bear
 Polar bear
(@polar-bear)
Eminent Member Member
Joined: 1 year ago
Posts: 21
Topic starter 05/12/2025 4:34 pm  

Right, I have had my first full month stats in. It is all a bit 'finger in the wind' stuff. I have averaged my normal monthly electric use (when the ASHP was not running) and taken this months reading and simply subtracted the two to get a rough guestimate of how much the ASHP is using.

To recap

Victorian cottage with mixed levels of insulation, 212 square metres.

5 bedroom, 4 reception rooms with mix of type 22 radiators and UFH

Open loop system, no buffer or LLH, ASHP is running 24/7, flow rate is approx 35C. 

November -3.9C lowest temp and 17.5C highest temp.

908KW total / 30.3KW per day/ 1.26KW per hour

House temp is 20.2C and 41.5% humidity

So all in all I am very happy with this, more importantly the wife is happy and finds the house much warmer and more comfortable. 

 



   
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bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
Joined: 4 years ago
Posts: 1009
05/12/2025 4:51 pm  

@polar-bear I see you have the most important metric firmly in mind 😁


House-3 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
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dgclimatecontrol
 dgclimatecontrol
(@dgclimatecontrol)
Trusted Member Member Professional Installer
Joined: 9 months ago
Posts: 71
05/12/2025 5:07 pm  

@polar-bear Sounds good apart from humidity which is too low for furniture and best health.



   
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Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 4 years ago
Posts: 2711
05/12/2025 5:11 pm  

@bontwoody That being ‘She Who Must Always Be Obeyed’ (That ‘A’ in the middle is not just advisory either!) Toodles (50th. wedding anniversary next July).


Toodles, heats his home with cold draughts and cooks food with magnets.


   
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Polar bear
 Polar bear
(@polar-bear)
Eminent Member Member
Joined: 1 year ago
Posts: 21
Topic starter 05/12/2025 5:20 pm  
Ideal ranges
  • Annual range: 30% to 60%
  • Summer range: 40% to 60%
  • Winter range: 30% to 50% 

Off the internet just now for inside of house, how would I change humidity anyway?

Outdoor humidity is 88% in sunny South Lancashire just now!



   
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Toodles
 Toodles
(@toodles)
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Joined: 4 years ago
Posts: 2711
05/12/2025 5:32 pm  

@polar-bear That’s what comes of living surrounded by weaving mills! To be serious; dehumidifiers are popular with some people and humidity may be increased by a water feature or just using bowls of water with wicking materials dipping into them. Toodles.


Toodles, heats his home with cold draughts and cooks food with magnets.


   
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Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Famed Member Moderator
Joined: 4 years ago
Posts: 1759
05/12/2025 5:39 pm  

Posted by: @dgclimatecontrol
↑

@polar-bear Sounds good apart from humidity which is too low for furniture and best health.

So your professional opinion is that good health dictates putting on the kettle for another cuppa to increase the humidity? 😉

Not sure I could disagree…

 


105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
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