Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Renewable Heating
Domestic Hot Water ...
Mixergy Tank Failur...
 
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!

Mixergy Tank Failure

 
Page 4 / 8
Domestic Hot Water & Cylinders
Last Post by bontwoody 11 months ago
87 Posts
9 Users
47 Reactions
17.2 K Views
RSS
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 6 years ago
Posts: 4910
06/10/2025 10:58 pm  

@bontwoody you’re joking! This story gets worse and worse.


🔥 Britain’s Heat Pump Shitshow
How Installing a Heating System Became a National Nervous Breakdown
Free UK shipping.
📗 Heat Pumps Explained
A Jargon-Free Guide for Homeowners
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
New to heat pumps?
Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.


   
ReplyQuote
JamesPa
 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 4 years ago
Posts: 5526
07/10/2025 7:33 am  

Posted by: @editor
↑

@bontwoody you’re joking! This story gets worse and worse.

In fairness to mixergy several on this forum including me also said switch it off. The apparent damage was so severe there was a real risk of catastrophic failure.  Not worth that risk.

However, this being the case, mixergy should have delivered a replacement tank next day!

 


4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
👍
1
ReplyQuote
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 6 years ago
Posts: 4910
07/10/2025 8:05 am  

Posted by: @jamespa
↑

However, this being the case, mixergy should have delivered a replacement tank next day!

That’s exactly my point. Kit and equipment fails, but this has taken an incredibly long time to resolve given that it’s your source of hot water (and it’s still not resolved).


🔥 Britain’s Heat Pump Shitshow
How Installing a Heating System Became a National Nervous Breakdown
Free UK shipping.
📗 Heat Pumps Explained
A Jargon-Free Guide for Homeowners
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
New to heat pumps?
Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.


   
ReplyQuote
bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
Joined: 5 years ago
Posts: 1062
Topic starter 07/10/2025 9:07 am  

@editor The latest is that I phoned the plumbing company yesterday to see when they are coming back and they said they they have sent a quote including the list of parts and are waiting for them to authorise it. I emailed Mixergy to ask them to expedite it. No reply yet.


House-3 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
10kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
ReplyQuote
Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 4 years ago
Posts: 3002
07/10/2025 9:29 am  

@bontwoody I rather feel that this drawn out episode is not going to do Mixergy’s reputation much good at all! Toodles.


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


   
ReplyQuote
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 6 years ago
Posts: 4910
07/10/2025 1:59 pm  

@bontwoody how long has it been now since you started the process to get it replaced?


🔥 Britain’s Heat Pump Shitshow
How Installing a Heating System Became a National Nervous Breakdown
Free UK shipping.
📗 Heat Pumps Explained
A Jargon-Free Guide for Homeowners
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
New to heat pumps?
Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.


   
ReplyQuote
bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
Joined: 5 years ago
Posts: 1062
Topic starter 09/10/2025 12:17 pm  

@editor @mixergy 

This is now 4 weeks without a hot water cylinder.

I currently have a non-functioning cylinder in the cupboard and functioning but non installed one in the hall.

I am currently being bounced between the installer, who are waiting for Mixergy to approve the installation quote and Mixergy who say they are dealing with it since Monday!

Ive got to say this isnt the service level I was expecting in what is really an urgent situation.


House-3 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
10kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
👍
🤦‍♀️
2
ReplyQuote
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 6 years ago
Posts: 4910
09/10/2025 1:14 pm  

@bontwoody, I have to say, the response time here is really concerning. This is your hot water we’re talking about, not a minor issue. Most installers will warn that heating might be off for a few days during works, but leaving someone without hot water for this long is unacceptable. 

@mixergy, please could you respond and explain what’s going on here?


🔥 Britain’s Heat Pump Shitshow
How Installing a Heating System Became a National Nervous Breakdown
Free UK shipping.
📗 Heat Pumps Explained
A Jargon-Free Guide for Homeowners
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
New to heat pumps?
Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.


   
👍
1
ReplyQuote
 ASHP-BOBBA
(@ashp-bobba)
Prominent Member Member Professional+
Joined: 2 years ago
Posts: 499
09/10/2025 10:05 pm  

OH my just read all of this, so you are still waiting? 

 


AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.


   
ReplyQuote
bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
Joined: 5 years ago
Posts: 1062
Topic starter 09/10/2025 10:18 pm  

@ashp-bobba Yes unfortunately 😔  I just read your other thread but my issue isn't quite the same as I was using the immersion on cheap rate and not the heat pump to heat the cylinder. Not nearly as interesting 😁


House-3 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
10kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
ReplyQuote
 ASHP-BOBBA
(@ashp-bobba)
Prominent Member Member Professional+
Joined: 2 years ago
Posts: 499
09/10/2025 10:24 pm  

@bontwoody well I hope it all get repaired for you.


AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.


   
ReplyQuote
bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
Joined: 5 years ago
Posts: 1062
Topic starter 09/10/2025 10:33 pm  

@ashp-bobba Thanks. I'll be interested to find out why the system failed when they get around to telling me.


House-3 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
10kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
ReplyQuote
Page 4 / 8
Forum Jump:
  Previous Topic
Next Topic  
Related Topics
Topic Tags:  Mixergy (4) ,

Currently viewing this topic 2 guests.

Share:

SPONSORS

Join Us!

Installer Finder

Degrees of Separation

Latest Posts

SPONSORS

Members Online

Click to access the login or register cheese
Protected By
Shield Security PRO