[Solved] Installing your own ASHP - DIY
So I’ve started thinking seriously about a self install and I’ve come up with a roadmap.
1. check existing pipework can handle the flow rate.
2. Perform a hear loss on my house.
3. Assess the radiators.
4. Compute pressure loss of the index circuit with existing pipework.
5. Work out what needs to change with existing pipework and radiators.
Once Ive done that first pass, then I’ll look at siting the pump, drainage, noise assessment and then apply for planning permission (but Im hoping they change the 1m boundary rule by that time!)
Whilst all this is going on, I’ll be doing the Heat Geek courses to help me understand more about the design!
Im also going to look into an MCS Umbrella signing off my installation, so I can take advantage of the BUS grant.
I’ve completed the first step, checking the flow rates will work, and it looks like I’m mostly okay.
You can check out my video - Road to a Heat Pump - Checking my existing plumbing - Part 1
Owner of a ridiculously oversized 35kW boiler and trying to make it as efficient as possible. 4.8kW solar PV with 5.4kWh storage. EV driver.
Follow my journey at https://www.youtube.com/@tomasmcguinness
Next big project is a heat pump!
Nice video Tom. Well explained 😁
House-2 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
Thanks!
Owner of a ridiculously oversized 35kW boiler and trying to make it as efficient as possible. 4.8kW solar PV with 5.4kWh storage. EV driver.
Follow my journey at https://www.youtube.com/@tomasmcguinness
Next big project is a heat pump!
Very interesting, @tomasmcguinness. You're a step or two ahead of me, I think. Can I suggest care with references to DeltaT in your videos, though, to avoid potential for confusion; suffix with 'boiler', 'radiator', or whatever.
@ianmk13 Thanks. I'll bear that in mind in future videos. I know after looking at that against, that my explanation of a few things was off. Learning never stops!
Owner of a ridiculously oversized 35kW boiler and trying to make it as efficient as possible. 4.8kW solar PV with 5.4kWh storage. EV driver.
Follow my journey at https://www.youtube.com/@tomasmcguinness
Next big project is a heat pump!
The work continues!
I've finally finished doing my simple heat loss calculation. Long delay getting this video out as I was doing the Heat Geek Mastery course.
In this video, I do a simple explanation of heat loss, how I approach it and then I run through all the numbers for my house.
It shows my heat loss is going to be around 7kW, but I need confirm this by using a professional tool (which will be my next video!)
Owner of a ridiculously oversized 35kW boiler and trying to make it as efficient as possible. 4.8kW solar PV with 5.4kWh storage. EV driver.
Follow my journey at https://www.youtube.com/@tomasmcguinness
Next big project is a heat pump!
@tomasmcguinness Have you been able to perform any sanity check on that figure? I'm thinking of the 'divide annual gas consumption by 2900' rule of thumb, for example. My own heat loss calculation that I did last year came out at around 13.5 kW but I tended to err on the pessimistic side. 'Air change' seems to have a big effect on the numbers, for example. The above rule of thumb using several years' worth of data resulted in a figure of 9-12kW. The higher figures were from years when we were at work during the day and I was running the heating largely for the two periods we were home and awake, so probably very inefficient. I've now downgraded my guesstimate to 10-11kW based largely on what I have gleaned from this forum. I've been monitoring my heating closely this heating season but there have been too few really cold days here in Buckinghamshire to make any helpful conclusions.
I’m in the DIY camp, completed the install last September and it has been running 24/7 since then.
Slightly different choice of install (15m up the garden from the house) and choice of emitters (rads and fan coils), but it works nicely.
I spent a bit mind you, close to £10k for all the parts for what ended up a completely new system, even down to changing all the primaries.
Heat loss and rad sizing were done with the freedom heatpumps spreadsheet and cross checked with heating engineer.
Off grid on the isle of purbeck
2.4kW solar, 15kWh Seplos Mason, Outback power systems 3kW inverter/charger, solid fuel heating with air/air for shoulder months, 10 acres of heathland/woods.
My wife’s house: 1946 3 bed end of terrace in Somerset, ASHP with rads + UFH, triple glazed, retrofit IWI in troublesome rooms, small rear extension.
-
New Installation - Grant Aerona 3 + 210L Hot Water Cylinder
2 weeks ago
-
How can I programme a setback for my Samsung Gen6 8kW heat pump?
2 months ago
-
ASHP heating issues / error code - advice very much appreciated
2 months ago
-
Why does my second unit sometimes start up unexpectedly on a Daikin split system?
2 months ago
-
If the supplier won't commission my Heliotherm heat pump what should I do next?
3 months ago
- 24 Forums
- 1,427 Topics
- 30 K Posts
- 17 Online
- 1,212 Members
Join Us!
Latest Posts
-
RE: Observations on my Ecodan's estimates of energy consumed and delivered
As it is possible for the FTC to be powered from a sepa...
By HarriUp , 3 hours ago
-
RE: ASHP Cut-off Temperatures: What's Your Setting and is a Your Heating Still On?
My system has been running 24/7 on weather compensation...
By HughF , 5 hours ago
-
RE: Noise problems with newly installed Samsung 8kW ASHP
Thanks @mars and @sjn I ran another check of 100 ba...
By Elton , 7 hours ago
-
RE: Heat Pump Truth or Myth#2 - Cycling uses a lot of power and ruins your COP
I cannot state that I have noticed that our A2A heat pu...
By Derek M , 8 hours ago
-
RE: Maximising Savings: Navigating My First Year with Octopus Energy and Heat Pump Running Costs
@toodles I can also happily report that the Agile tarif...
By Steve D , 9 hours ago
-
@editor As we all know, RHH always strive to educate, e...
By Toodles , 11 hours ago
-
@bontwoody I used the website link to contact them for ...
By Toodles , 13 hours ago
-
RE: Samsung ASHP power cycling
I have considered that and I would have expected to see...
By Blaine_t , 13 hours ago
-
RE: Is this a bad installation and is there something wrong with my Samsung heat pump?
@transparent that controller was moved from the loft an...
By David999 , 15 hours ago
-
RE: 14kW Midea ASHP in an old leaky building
Hi @batalto. I see you have a Midea ASHP and I am sched...
By Kbedders , 16 hours ago
-
RE: Additional ASHP kW for DHW cylinder?
We're in a similar boat to you with a hodgepodge of dif...
By Mars , 17 hours ago
-
Insulation of flow and return Heat Pump piping
I know mention has been made of ties on insulation runs...
By Toodles , 17 hours ago
-
RE: No-code, plug-and-play monitoring for your heat pump
Anyway, so far we have all missed the main protagonist ...
By Toodles , 18 hours ago
-
Rising Damp – Production Recommendation
We've noticed some rising damp around a window after th...
By Mars , 18 hours ago
-
RE: Bivalent (or even trivalent!) system design options for a new GSHP installation
Right, back to the topic at hand. To answer some of you...
By Algienon , 1 day ago
-
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?
@ivanopinion Im in the same team as Ivan. I think for a...
By bontwoody , 2 days ago
-
RE: Issues with Vaillant connectivity via the MyCONNECT gateway
@drew-pa I don't know about hard work! It is pretty cl...
By dr_dongle , 3 days ago
-
RE: Are Solar Diverters Necessary for Homes with ASHPs and Solar PV?
@editor No, I made one 😀 Loft insulation all...
By Andris , 3 days ago
-
@hughf Thanks for that. Ah so they are talking about ...
By IRMartini , 4 days ago
-
RE: Ecodan software update. Real or scam?
@abernyte, hmm, must have been a major disruption if 40...
By Mars , 4 days ago
Latest Topics
-
By Toodles 11 hours ago
-
By Blaine_t 16 hours ago
-
Insulation of flow and return Heat Pump piping
By Toodles 17 hours ago
-
Rising Damp – Production Recommendation
By Mars 18 hours ago
-
Additional ASHP kW for DHW cylinder?
By Project_Electrify 1 day ago
-
By IRMartini 4 days ago
-
Riello / Midea - modbus set flow temp
By stuartornum 4 days ago
-
Ecodan software update. Real or scam?
By Morgan 5 days ago
-
Noise problems with newly installed Samsung 8kW ASHP
By Lokisam 7 days ago