Forums

Forums
Members
RadWhisperer
Activity
 
Notifications
Clear all
RadWhisperer
@radwhisperer
Member
Trusted Member
Joined: Oct 19, 2025
Last seen: Nov 30, 2025
Profile Activity
Topics: 0 / Replies: 28
AllTopicsReplies
Reply
RE: Defrost behaviours

@georgea You system isn't too different from mine. I don't have UFH and my house is a 2 bed mid-terrace so maybe a bit smaller. Heat loss 3.3 @ -3C...

4 days ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost behaviours

Slight correct to the above defrost behaviour as the fan only ramps at the beginning and end of the cycle. The bit in the middle is when both the wate...

4 days ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost behaviours

ASHP Model: Daikin Altherma 3M 4KW House loss: Calculated 3.3 at -3C, definitely overestimated though. Control mode: Weather Comp + Thermostat wit...

5 days ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A2A vs A2W: Which Heat Pump Would You Pick?

With existing rads it seems easier to just install A2W. I've seen some larger houses with multiple internal A2A units have pipework running all over t...

5 days ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Maintaining temperature on windy day

Valiant & Daikin have a form of load compensation or room influence which can dynamically adjust the WDC by a few degrees based on what thermostat...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Extend the colder range of the weather compensation curve?

Daikin has a slope WDC which changes per degree of temp change I think. Never used that one myself. The more commonly used one has the two points at e...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Confused by Flow Rates

I was thinking something similar to the OP half way through the episode still worth a watch of course. Emitter type, delta-T & WDC steepness are...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Daikin Short Cycle Query

Just a suggestion but upload your images to an AI agent such as Grok with a full description of your installation and you will get a good description ...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Daikin Wireless Thermostat

The switch from WDC to LWT i.e. pure WC is fairly straight forward. Your current WDC will apply to the LWT mode except now your thermostat is a read o...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it mad to think there should be a minimum SCOP for UK heat pump installs?

Or a minimum standard for data collection. The Daikin MMI gives unusable graphs on the tiny MMI interface. There are sums for input and output on diff...

1 month ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: Daikin Octopus installation update - I saw my first defrost. 😍😂

My MMI is in the loft but I checked the pump flow rate when running the DHW cycle and it was 25 l/h and I could hardly tell it was running. So now I k...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mitsubishi Ecodan R290 10kW performance

If the Delta T is easy to configure then just try it as you appear to have very good data collection as standard. So if the pumps are external and not...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Page 1 / 3
Share:

Join Us!

Podcast Picks

Latest Posts

Click to access the login or register cheese
x Powerful Protection for WordPress, from Shield Security
This Site Is Protected By
ShieldPRO →