Bristol ASHP consideration
I'm going to start this thread as somewhere to keep notes about what we are doing in looking for an ASHP....
- Area: south of BristolÂ
- House build date: 2000
- Details: 4 bed brick detached with cavity walls and suspended floor
Initial suggestions from suppliers are Daikin 9kW Monobloc and Daikin Altherma 3HT (11kW?)
We have found a couple of ASHP users in the neighbourhood and in the next week or so will be going to have a look at their installations and a chat about living with ASHPs with our house type/climate. Exciting!
Not sure what ASHP they have - will see if they are the same.
Welcome to the forums Alastair and we look forward to receiving updates along your ASHP journey.
Buy a copy of the The Ultimate Guide to Heat Pumps
Subscribe and follow our Homeowners’ Q&A heat pump podcast
Posted by: @alastairWe have found a couple of ASHP users in the neighbourhood and in the next week or so will be going to have a look at their installations and a chat about living with ASHPs with our house type/climate. Exciting!
Not sure what ASHP they have - will see if they are the same.
We have had a couple of great conversations. One person had a 7 year old ASHP and had lived with ASHPs for 15 years in Scandinavia and another person had a new Daikin installed this summer and had worked as a heating engineer. Both had loads of information to pass on but the things that struck me most were:
- The temperature it is commissioned at doesn't have to be the temperature it is set to. I might be a bit confused here, but I think both systems were set up to heat at 21C but both users set their thermostats at below 20C. I was originally under the impression that the heating would run at the commissioned temperature and it would be wrong to set it cooler, but that was obviously me making up problems where none exist.
- Generally, aside from not constantly turning the units on and off, just use the system as you would a normal heating system i.e. either set a timer and/or a desired temperature and walk away.Â
- The compressor from older systems is inside and can have quite a hum whereas newer models (at least the ones we've seen) have a compressor in the outside unit and are pretty quiet.
- Try and install the outside unit on a sunny wall as the heat from the sun can be used reducing the need for the fan to turn on and reducing possible noise. Â
- Tinker with the TRVs to begin with to get each room how you want them and then leave them alone.
- Make sure a powerflush is part of the install, particularly if you have fairly old (or microbore) piping.
- Daikin came across very positively both in terms of their units but also after sales care too.
- As we know, make sure your insulation is tippety-top for the best efficiency (although the systems still work with insulation still needing to be done)
- Neither person had any problem in recommending switching to a heat pump.Â
Update on this. We have the solar PV and GivEnergy battery install scheduled for very early January and the Daikin 9kW Monoblock scheduled for mid-February. Cavity wall insulation is scheduled for December. We are very excited. Having come from an EPC A-rated house to a D-rated house the last few months have just felt wrong (and expensive). It'll be good to start making the changes we want to get a warm, efficient and renewable based home.
On top of all this though we also had a gas leak and our heating and hob were turned off a couple of weeks ago. We've done the sums and it makes no sense to fix and then rip out, so it's duvets and waterbottles (and hoping things don't get too cold!) for a couple of months: it'll make the heating from the heat pump seem all the more glorious when it gets installed. Right? 😀Â
Wow @alastair, that is a very exciting, albeit cold, transition to renewable heating and your heat pump. Seems you've got a good plan and timeline in place, and hopefully it all goes according to schedule. Good luck, and keep us posted.
Buy a copy of the The Ultimate Guide to Heat Pumps
Subscribe and follow our Homeowners’ Q&A heat pump podcast
Happy New Year all
I'm going to blog about the process that we are going through so that we have a record, and also in the hope that some of the information we have found can help others. The first post is here: https://ajgdevelop.wordpress.com/2022/01/02/retrofit-1-context/
Â
The next instalment - with some resources that some may find useful:
https://ajgdevelop.wordpress.com/2022/01/05/retrofit-2-preparation/
Part 4: The installation is done!
https://ajgdevelop.wordpress.com/2022/01/21/retrofit-4-physical-installation/
Part 5 of the blog - took a while to find the time to write it ..... We had a thermal survey done!
https://ajgdevelop.wordpress.com/2022/03/08/retrofit-5-cheese/
Very revealing @alastair. Years ago I nearly got stuck behind the bath by squeezing myself round to reach a big hole just as you describe and stuff it with loft insulation. Builders just boxing round the stink pole and giving no thought to heat loss 🙄. I have the same cold draught coming from the boxing in my current bathroom.
-
How can I programme a setback for my Samsung Gen6 8kW heat pump?
1 day ago
-
Rodents! A word of warning for heat pump owners
7 days ago
-
Retrofitting: moving to ASHP old oil boiler in large old property - experience/advice please on MSC calcs
2 weeks ago
-
How to choose Towel Rails for an ASHP
2 weeks ago
-
How to Zone with a Single Room with UFH
2 weeks ago
- 26 Forums
- 2,208 Topics
- 48.7 K Posts
- 200 Online
- 5,868 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Samsung Heat pump with Yonos Pico circulating pump running all the time
Looks like you have a 25L buffer vessel, so I'm guessin...
By Old_Scientist , 1 hour ago
-
@bontwoody you’re joking! This story gets worse and wor...
By Mars , 2 hours ago
-
RE: Samsung Heat Pump – Can't Activate TW2 Pipe Sensor (for Delta T Control)
If you do suggest you consider repurposing it as a 2 po...
By JamesPa , 3 hours ago
-
-
RE: Say hello and introduce yourself
Fully agree with @cathoderay. My journey took 2 years ...
By JamesPa , 4 hours ago
-
RE: The Hidden Secret to a Successful Heat Pump: Pipe Size Matters
@editor Agreed. There is another point to be made h...
By JamesPa , 12 hours ago
-
RE: RDSAP10 effect on existing heat pump EPC rating?
Tim, Yes ChatGPT thought I could get another...
By Mike Patrick , 13 hours ago
-
RE: Enabling WiFi: Samsung ASHP on Smart Things App
No problem, @richdorm; glad it helps.
By Majordennisbloodnok , 15 hours ago
-
RE: Help me keep the faith with my air source heat pump installation
If that makes you feel happier then go ahead, but it wo...
By JamesPa , 15 hours ago
-
RE: Testing new controls/monitoring for Midea Clone ASHP
I do already have the same basic setup, all room influe...
By cathodeRay , 16 hours ago
-
RE: IVT Greenline high pressure switch and electrical cassette errors
OK. You dont say whether it is from the feeds to/from ...
By JamesPa , 16 hours ago
-
RE: How can I programme a setback for my Samsung Gen6 8kW heat pump?
Yes, and probably also Adia although the latter has a m...
By JamesPa , 1 day ago
-
@editor I am all in favour of provocati...
By GrahamF , 1 day ago
-
RE: How to Understand Wiring Up a Heat Pump
Morning, On top of what everyone else I would deffo loo...
By Grantmethestrength , 2 days ago
-
RE: Sizing a heat pump: Save me from my headache
Got the results back from the one we’re ...
By Mikeatthezoo , 2 days ago
-
RE: Renewables & Heat Pumps in the News
Thanks Lucia. I'll set aside some time to go through th...
By Transparent , 3 days ago