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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 13, 2025
Profile Activity
Topics: 17 / Replies: 2131
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Reply
RE: Rate the quality of your heat pump design and installation

If that gets an average vote, I wonder, how bad do they have to be to to get a poor/absolutely shocking vote?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

This is interesting. I have a similar age and construction house, but a lot smaller, near half the size, and I am using 40kWh/day, or also about £15/d...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 14kW Midea ASHP in an old leaky building

@kev-m, @mjr, @mookyfoo, @derek-m - thank you all for your comments. I did do the setback over Sunday to Monday night (to 16 degrees on the kitchen ro...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: -5c this weekend!

My hope, if I ever need to do this, is that it will increase energy use and so costs (obvs, 14 => 16kW), but it should not adversely affect COP (mo...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Retrofit in a 2015 house with 10mm radiator tails

In the meantime, I've tracked this down, it is the so called radiator exponent n equation, which is used by rad manufacturers to calculate their corre...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 14kW Midea ASHP in an old leaky building

I'm putting this here because it is in effect a continuation of this thread. For the past week, I have been fine tuning my heating always on weather...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Retrofit in a 2015 house with 10mm radiator tails

I had a number of installers take similar positions. They are jobsworths, hiding behind regulations. Solution? Fire them.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Retrofit in a 2015 house with 10mm radiator tails

It's a minefield. In fact the whole thing is a minefield. As I have said before I prefer using a correction factor, ie you down rate the rads outpu...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What's your current daily damage?

As it happens, I have been a fairly close eye on things for the last week. First up, context. Three bed leaky old building in Southern England. Hour...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Retrofit in a 2015 house with 10mm radiator tails

I wonder if this is something we don't give enough consideration to. I too have noticed my heating takes a very long time to reach temp, sometimes mea...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Retrofit in a 2015 house with 10mm radiator tails

@alistairgbarron - I had similar painful hoops to jump through, and had the additional constraints caused by a small listed building, the listing limi...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Retrofit in a 2015 house with 10mm radiator tails

I had a few installer quotes based on the MCS software. They didn't get the job. Good that you are double checking things, typos are easy to do.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Page 160 / 179
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