Search with Wattson
Activity
 
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!

cathodeRay
cathodeRay
@cathoderay
Moderator
Famed Member
Joined: Feb 28, 2022
Last seen: Oct 26, 2026
Topics: 18 / Replies: 3076
Reply
RE: 14kW Midea ASHP in an old leaky building

One final very simple, I hope, example: two convector heaters, one 1.5kW and one 3kW. The 3kW one delivers heat energy at twice the rate of the 1.5kW ...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

Indeed. I have read some accounts that do a sort of vanishing trick, where everything gets divided by itself, and all disappears into oblivion, though...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

As @robl has pointed out, it is easy to get confused by the apparent similarity between mph (miles per hour) and kWh (kilowatt hours) but there is the...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

@batalto (and others) - having cleaned the filter, and let the system run for a while, I am pleased to say the Midea controller is reporting a higher ...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

@batalto - OK, thanks, now done. I did turn the DHW off and room stat down. A fair amount of crud, but that is after almost two months of near continu...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

@batalto - thanks, I will check the filter and report back. Before I check it, presumably you need to turn the heating and DHW off before doing it?

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

@batalto - it would be interesting to compare flow rates, given we have similar units. I haven't cleaned the gauze filter, the one adjacent to the hea...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

Some measurements from 0800 this morning: Midea controller: ambient 11 LWT 41 RWT 35 capacity 0kW flow 0.83M3/H current 0A Room temps (design temp...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

@cycleneil - no, its controlled by an on/off room stat in the kitchen, currently set to 21 degrees, kitchen design temp is 19 degrees, so most of the ...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

The rads are actually Ultraheat branded, and the output per size varies slightly between different manufacturers. My installer went with a certain sup...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

Exactly, that is why I am increasing thinking it is a compound problem, both the heat pump capacity is inadequate at low ambients and the heat that is...

5 years ago
Reply
RE: 14kW Midea ASHP in an old leaky building

I wasn't meaning to be harsh (and note that I chose a Midea over a Mitsubishi, for various reasons, including it must be said its low profile design b...

5 years ago
Page 252 / 258
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