Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Renewable Heating
Air Source Heat Pum...
Cascade System or l...
 
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!

Cascade System or larger single unit

 
Air Source Heat Pumps (ASHPs)
Last Post by Renewables345 13 minutes ago
1 Posts
1 Users
0 Reactions
4 Views
RSS
 Renewables345
(@renewables345)
Eminent Member Member
Joined: 1 year ago
Posts: 13
Topic starter 18/09/2026 3:01 pm   [#3166]

Hi all,

I’m looking for some advice on an upcoming domestic ASHP project.

The design heat loss is around 28kW, and I’m currently looking at the options for supplying this with either:

  • 1 × approximately 30kW ASHP Panasonic

  • 2 × approximately 16kW ASHPs Panasonic

There will also be a 500L DHW cylinder.

I’d be interested to hear from anyone with experience of systems around this size and what you would consider when deciding between a single larger unit and two smaller units.

In particular, I’d like to understand the practical pros and cons of each approach, such as hot water recovery, efficiency and modulation.

If you've installed or designed both types of systems, I'd really appreciate hearing about your experience and which factors you would look at before deciding.

Thanks in advance.



   
Quote
Topic Tags
Cascade
Forum Jump:
  Previous Topic
Related Topics
Topic Tags:  Cascade (3) ,

Currently viewing this topic 1 user ( Renewables345 ) and 2 guests.

Recently viewed by users: Majordennisbloodnok 11 minutes ago.

Share:

SPONSORS

Join Us!

Installer Finder

Degrees of Separation

Latest Posts

SPONSORS

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