Forums

Search with Wattson
Forums
Renewable Heating
Air Source Heat Pum...
Replacing Worcester...
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

Replacing Worcester oil boiler with an ASHP

 
Page 5 / 16
Air Source Heat Pumps (ASHPs)
Last Post by JulianC 8 months ago
190 Posts
27 Users
182 Reactions
54 K Views
RSS
JulianC
 JulianC
(@julianc)
Honorable Member Member
Joined: 5 years ago
Posts: 336
Topic starter 14/06/2021 11:08 pm  

Update: so my ASHP is effectively off through the summer. H/w is via solar PV and Solic 200 diverter mentioned elsewhere. 
But the Daikin in standby mode uses 1.5-2kWh of energy per day. To keep everything in shape I guess?  This should be supplied by my solar PV. And matches what Daikin support said. 
Has anyone found anything similar?


Daikin Altherma 3H HT 12kWh ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Volvo EX30 Ultra Twin Performance electric vehicles with Myenergi Zappi mk1 & Ohme chargers


   
👍
2
ReplyQuote
Jeff
 Jeff
(@jeff)
Noble Member Member
Joined: 5 years ago
Posts: 600
15/06/2021 7:31 am  

@julianc good to know.

Does anyone turn their ashp off in the summer or if they are away from home for several weeks? 



   
ReplyQuote
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4519
15/06/2021 9:54 am  
Posted by: @jeff

@julianc good to know.

Does anyone turn their ashp off in the summer or if they are away from home for several weeks? 

We turned our heat pump off a few weeks ago. Our hot water is heated using our iBoost (connected to our solar PV array) and I'm hoping that it will remain turned off well into August/September.


Get a copy of The Ultimate Guide to Heat Pumps

Subscribe and follow our YouTube channel!


   
👍
2
ReplyQuote



 Mike Patrick
(@mike-patrick)
Reputable Member Member
Joined: 5 years ago
Posts: 193
15/06/2021 10:53 am  

This seems like a variation on the Four Yorkshiremen sketch.

I'm completely out of the running - but I guess the winner will be whoever puts the most back into the grid.

Mike


Grant Aerona HPID10 10kWh ASHP


   
ReplyQuote
JulianC
 JulianC
(@julianc)
Honorable Member Member
Joined: 5 years ago
Posts: 336
Topic starter 15/06/2021 2:11 pm  

@mike-patrick “we were so poor…” 😂

For me, it is always trying to use as much of the electric I’ve generated via PV as possible. So reducing draw from the grid and keeping costs down. Very Yorkshire 👍


Daikin Altherma 3H HT 12kWh ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Volvo EX30 Ultra Twin Performance electric vehicles with Myenergi Zappi mk1 & Ohme chargers


   
👍
2
ReplyQuote
JulianC
 JulianC
(@julianc)
Honorable Member Member
Joined: 5 years ago
Posts: 336
Topic starter 16/07/2021 11:17 pm  

Solar PV and diverter (Solic) continue to heat hot water in Mixergy tank. Daikin ASHP using about 1.5kWh per day in standby. I need to contact Daikin to ask if this can be scheduled at night when my octopus energy tariff is cheap. 


Daikin Altherma 3H HT 12kWh ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Volvo EX30 Ultra Twin Performance electric vehicles with Myenergi Zappi mk1 & Ohme chargers


   
ReplyQuote



 Derek M
(@derek-m)
Illustrious Member Member
Joined: 5 years ago
Posts: 4425
17/07/2021 4:38 pm  

Julian,

Why would you want your ASHP scheduled at night if you have free solar during the day?



   
👍
2
ReplyQuote
JulianC
 JulianC
(@julianc)
Honorable Member Member
Joined: 5 years ago
Posts: 336
Topic starter 17/07/2021 4:47 pm  

Hmmm. Bloody good point @derek-m. I obviously didn’t have my thinking head on 😊


Daikin Altherma 3H HT 12kWh ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Volvo EX30 Ultra Twin Performance electric vehicles with Myenergi Zappi mk1 & Ohme chargers


   
👍
2
ReplyQuote
JulianC
 JulianC
(@julianc)
Honorable Member Member
Joined: 5 years ago
Posts: 336
Topic starter 14/10/2021 7:05 pm  

Six month update. 
With the system fitted 20th April, thought I’d report. 
We have nominally consumed 489kWh of electric for the ASHP. I say nominally because over the summer, we generate quite a lot via solar PV, and I’m only measuring input electric, not where it’s coming from. Also, cost is a little bit difficult to determine, as I have a different day and 4hr night rate with Octopus. 
The maximum cost would be £73 at current rates. Which is good. 
I have been consuming about 2kWh/day with the system just ticking over. As hot water mostly heated by solar PV electric diverter. 
My original MCs estimate was 7500kWh/annum. So the big spend, as you all know, will come in the deep mid-winter. 

Any questions, just ask


Daikin Altherma 3H HT 12kWh ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Volvo EX30 Ultra Twin Performance electric vehicles with Myenergi Zappi mk1 & Ohme chargers


   
ReplyQuote



Jeff
 Jeff
(@jeff)
Noble Member Member
Joined: 5 years ago
Posts: 600
14/10/2021 9:17 pm  

Just an observation really. 2kw to keep the heat pump ticking over is a shame. 

That's more than a fridge freezer running normally. 

Feels like heat pump manufacturers need to work on that. Not great to potentially increase the base load of every home by 2kw a day. That's a big increase on the average usage per home.

Good to hear things are uneventful.

Did the installers attempt to profile the 7500 over a year? 



   
ReplyQuote
JulianC
 JulianC
(@julianc)
Honorable Member Member
Joined: 5 years ago
Posts: 336
Topic starter 14/10/2021 11:43 pm  

I didn’t think 2kWh was too bad. In the summer my solar PV will be providing the electricity and in the winter it will contribute to heating the home. 
Yes the MCS installer, Ecobubl profiled the demand and the estimate was 530kWh. So we are a small amount below 👍


Daikin Altherma 3H HT 12kWh ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Volvo EX30 Ultra Twin Performance electric vehicles with Myenergi Zappi mk1 & Ohme chargers


   
👍
2
ReplyQuote
Jeff
 Jeff
(@jeff)
Noble Member Member
Joined: 5 years ago
Posts: 600
15/10/2021 8:22 am  
Posted by: @julianc

I didn’t think 2kWh was too bad. In the summer my solar PV will be providing the electricity and in the winter it will contribute to heating the home. 
Yes the MCS installer, Ecobubl profiled the demand and the estimate was 530kWh. So we are a small amount below 👍

Good to know. 

Yep, having solar helps, but the majority of homes aren't expected to have solar. That is quite a big leap in the average 8kw a day average load of a home that ofgem use. 25%  more electricity just to have the heat pump ticking over. That is a lot of wind turbines. I was just surprised. 

Those that are able to use solar won't really notice as you say. 



   
ReplyQuote



Page 5 / 16
Forum Jump:
  Previous Topic
Next Topic  



Share:

Join Us!

Worth Watching

Latest Posts

Click to access the login or register cheese
x Powerful Protection for WordPress, from Shield Security PRO
This Site Is Protected By
Shield Security PRO →