Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Renewable Heating
Air Source Heat Pum...
Zehnder ComfoPost C...
 
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!

Zehnder ComfoPost CW6 with ASHP?

 
Air Source Heat Pumps (ASHPs)
Last Post by AllyFish 3 years ago
4 Posts
3 Users
0 Reactions
1,927 Views
RSS
 john.connett
(@john-connett)
Active Member Member
Joined: 3 years ago
Posts: 20
Topic starter 24/08/2023 4:18 pm   [#1054]

I am considering replacing my gas boiler with an ASHP and also upgrading my MVHR system. A couple of items I am considering are the Zehnder ComfoPost CW6 and the Zehnder NOX40-125. Space is tight and a careful design will be required. I would also like to improve the acoustic insulation of the loft space where the main MVHR components are installed.

Does anyone have experience of using a chiller like the CW6 attached to a cooling circuit on an ASHP? Last year's heatwave caused uncomfortable overheating in my house and I am interested in potential solutions.

I have tried asking Zehnder for further information but have not received any replies either to forms submitted via their website or to emails sent to a number of their email addresses (and from two of my email addresses). I have even tried whatever the bird site is called this week. I find it really frustrating when companies publish contact details but then don't reply!



   
Quote
 Fazel
(@fazel)
Estimable Member Member
Joined: 3 years ago
Posts: 124
25/08/2023 2:59 am  

What exactly did you ask/want to know from Zehnder?



   
ReplyQuote
 john.connett
(@john-connett)
Active Member Member
Joined: 3 years ago
Posts: 20
Topic starter 25/08/2023 11:57 am  

Posted by: @fazel
↑

What exactly did you ask/want to know from Zehnder?

I would like to know if they offer design advice and can recommend installers that might consider upgrading my existing system. There is a good supply of technical information available on their website but I am not an MVHR system designer. The existing system was specified by the architects on an earlier project and installed by contractors chosen by them.

It would be reassuring to know that should problems occur they would respond to technical support requests, even if they just suggested that the request should be sent elsewhere.

 



   
ReplyQuote
 AllyFish
(@allyfish)
Prominent Member Contributor
Joined: 4 years ago
Posts: 518
30/08/2023 2:28 pm  

If you want to include cooling, have you considered air to air heat pumps? Depends on the number of rooms you consider needing cooling, and the visual impact of the DX fan coil units internally. Quite a number of air to water ASHPs will heat and cool, but cooling requires fan coil units, either low level radiator style units, or high level ceiling or wall units. MVHR system airflows are unlikely to have a high enough airflow volume to enable DX coils to be added that will be effective. The amount of cooling you'll get out of the them will be very low.



   
ReplyQuote
Forum Jump:
  Previous Topic
Next Topic  
Share:

Join Us!

Latest Posts

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