Forums

Forums
Members
JamesPa
Activity
 
Notifications
Clear all
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 17, 2025
Profile Activity
Topics: 17 / Replies: 2862
AllTopicsReplies
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

@bontwoody In truth it is a very widely held misconception, whether we are talking about boilers or heat pumps, that turning off the heating for (sa...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

Agree (assuming that 'draw' in the second sentence should read 'deliver'). So in the second instance at COP=4.5, 81kWh would be delivered for 12k...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

Referring to the above Im going to try to clear up some basics, with apologies to any physicists or engineers reading! Firstly energy is measured (f...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

If oversized then it is indeed quite possible that an overnight setback will save energy, because you are reducing the inherent inefficiency of cyclin...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

If the energy is delivered at cop4 is xkWh then you must supply x/4kWh. If the same amount of energy is delivered at cop 6 you must supply x/6kWh. I...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

Er no, you are confusing power and energy. You pay for energy not power. If 24kWh is required then the input energy is 24/cop. So if the cop is 6...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

Sorry but that is simply not true and worse still is quite seriously misleading. Whilst the heating is off the house continues to lose heat. It l...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice needed on inefficient Samsung ASHP installation

I just ran the numbers through my WC simulator. This calculates, based on Ecodan R32 data, the efficiency gain from various WC curves relative to fix...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice needed on inefficient Samsung ASHP installation

It is a cop out and as I say upthread will incur a penalty of 3-6% or more if it's more than a a couple of degrees out. However installers don't was...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice needed on inefficient Samsung ASHP installation

This is the 'alternative method' I refer to in a post above. Care needs to be taken with the choice of room stat. Some 'clever' ones, as they appro...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

According to his post a few pages back the speeds of both pumps are controlled by an Arduino based system. I did ask what behaviour it targets but go...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

Thanks. Doing this would, as you say, eliminate another variable and I did consider suggesting it (and, if this were my system, it is what I would do...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Page 161 / 241
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 →