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Prunus
@prunus
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Estimable Member
Joined: Apr 6, 2021
Last seen: May 26, 2026
Profile Activity
Topics: 5 / Replies: 70
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RE: Whilst Regs allow on-off simple thermostats (Nest, Hive, Heatmiser, Honeywell, etc) Installers should never be responsible for failing heat pumps!

@ianjrw As mentioned above, can you ask your installer about using the heatpump's own controller? What brand of heatpump are they suggesting? Let m...

5 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Install a Grant Aerona 13kW instead of Mitsubishi Ecodan 11.2kW?

I don't know yet. Let me explain... I was in exactly the same situation 3 months ago - lead times on the Ecodan cylinders were out to 12 weeks and ...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: DIY Heat Pump controller (driver)

@derek-m The integer overflows are just warnings, and I don't think they're the source of the problem. It seems to be saying is the program is too bi...

5 years ago
Forum
Ground Source Heat Pump (GSHPs)
Reply
RE: DIY Heat Pump controller (driver)

I need to work on my Hungarian, but some wild guesses that it could be either a problem with communication with the Arduino - perhaps the programming ...

5 years ago
Forum
Ground Source Heat Pump (GSHPs)
Reply
RE: Whilst Regs allow on-off simple thermostats (Nest, Hive, Heatmiser, Honeywell, etc) Installers should never be responsible for failing heat pumps!

It's completely nuts. This is the compressor speed of my Grant (aka Chofu) ASHP, using the Honeywell Lyric on/off controller the installer supplied. ...

5 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Published noise vs measured noise

To add, another thing is the sensitivity of the occupants. I specifically chose a larger double-fan heat pump because it was quieter (60dB) than a sm...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Review your air source heat pump

Hi Mars, I can't help but feel conflicted about this. I'd say there are several factors in play for a heat pump install. Site: the type of hous...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Antifreeze protection

An alternative approach to using glycol is to use anti-freeze valves. Basically you put these at the lowest point of the ASHP outdoor circuit, and th...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Chilled Water AC System

You will probably need to talk to distributors, since they aren't typically a part stocked in everyone plumbing warehouse. Orion Air Sales have the F...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona 3 16kW ASHP in 100 year old cottage

The way Grant do it, they have a traditional heating thermostat (like a boiler) to provide 'heat please' and 'hot water please' inputs to the heat pum...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What criteria would you rate an energy provider on?

At the end of the day it's all about tariffs. Might not be the cheapest, but a tariff to suit your use case - eg cheap EV charging overnight. Obviou...

5 years ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Anyone want to share costs on batteries?

Sofar has bigger units than the 3kW version, or you can double up. But 16A per phase (ie 3kW single phase) is the limit of the UK G98 certification, b...

5 years ago
Forum
Energy Storage
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