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djh
@djh
Member
Active Member
Joined: Jan 21, 2024
Last seen: May 27, 2026
Profile Activity
Topics: 1 / Replies: 17
AllTopicsReplies
Reply
RE: A2A vs A2W: Which Heat Pump Would You Pick?

@ashp-bobba that's a different idea. Look at the Panasonic system to see what it does.

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

@editor when will the MCS site have any certified installers for air-air heat pumps? And when will it admit the technology is by no means new! 🙂 ...

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

That page seems to mention 2027 only for air-water heatpumps, not for air-air that are discussed here.

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Air-to-air heat pumps - best models and installers
5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 4
Views: 886
Reply
RE: A2A vs A2W: Which Heat Pump Would You Pick?

Is there a section or even one discussion here that compares air-to-air brands and models and installers? For those of us who have decided we want o...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do thick walls make for warm houses?

External wall insulation (EWI) is generally thought to be better than Internal wall insulation (IWI) because it keeeps the thermal mass of the walls w...

2 years ago
Forum
Insulation
Reply
RE: Convert Pt1000 to NTC 20 kΩ?

Using the curve in the Viessmann guide you can see that the resistance at 140°C is about 0.5. So Rt/R25 is 0.025. You can then look at your 17 curves ...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Computer Program or Computer Programme – The Definitive Debate

I'm sorry but I did ask: "If anybody knows of a dictionary or other reference, or any computing-related academic paper, that use the hypothetical 'pro...

2 years ago
Forum
Well & Truly Off The Grid
Reply
RE: Computer Program or Computer Programme – The Definitive Debate

Again do you know of any actual usage?

2 years ago
Forum
Well & Truly Off The Grid
Reply
RE: Computer Program or Computer Programme – The Definitive Debate

I asked and apparently Turing didn't publish anything on computing after 1950, so how he spelled program is irrelevant to an agreement that was made (...

2 years ago
Forum
Well & Truly Off The Grid
Reply
RE: Computer Program or Computer Programme – The Definitive Debate

Maybe I wasn't clear, but the decision of the meeting was reported in the preface of the book which I quoted as an image. FWIW, both the Cambridge dic...

2 years ago
Forum
Well & Truly Off The Grid
Reply
RE: Computer Program or Computer Programme – The Definitive Debate

It turned out to be quite an interesting question. Two aspects. First the English spelling was program from its Latin and Greek roots until Victoria...

2 years ago
Forum
Well & Truly Off The Grid
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