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AllyFish
@allyfish
Contributor
Prominent Member
Joined: Oct 31, 2022
Last seen: Mar 16, 2026
Profile Activity
Topics: 23 / Replies: 494
AllTopicsReplies
Topic
Outdoor monobloc frost valve insulator
3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 1
Views: 1685
Reply
RE: 17kw Grant Aerona heat pump not performing

You're consuming significantly less kWh per day after the cold snap with the WC enabled than you were before at comparable outdoor temperatures. So th...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A2A as an interim ASHP measure

Some of the A2W ASHPs also can cool in summer. Most can, they are all reversible circuit heat pumps. But for MCS and 'renewable' restrictions in the U...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My ASHP is running out of hot water

Hello @Curlykatie, How much hot water do you get through as a family? 300L is decent sized cylinder, charging for 1hr a day should be plenty assumin...

3 years ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Heat Pumps - An Expensive Folly?

Well, if ASHPs are an expensive folly, I'm a fool. Currently I'm requiring about 86kWh a day for heating 3/4 floor area of the house and daily hot w...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Launches the EHS Mono HT Quiet – A High Temperature, Low Noise Heat Pump Ideal for Home and Building Renovations

@andehh the Samsung EHS Mono HT has a more complicated refrigeration system with intercoolers to stop the refrigeration circuit cooking itself for hig...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kw Grant Aerona heat pump not performing

@soniks this is good news. I'm going to contact Grant regarding why my weather compensation was not enabled, as you point out, it's clearly stated as ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Looking at putting in a PV system

Hi Jeff. Solar PV panels are now £0.50 per watt, electricity cost is only going in one direction, so max out all available roof space. Exporting power...

3 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: 17kw Grant Aerona heat pump not performing

@soniks use the default Grant settings as a start. Have you found out why your ASHP is cycling on and off and what is causing it? That's a separate is...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kw Grant Aerona heat pump not performing

@soniks it's exactly as per @derek-m comment. Something is switching your ASHP on and off 2 or 3 times an hour. Because of that your flow temperature ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Another 17kw Grant Heat Pump - Advice Needed!

@bretix we're all learning on these systems 🙂 I would set the secondary pump to full flow, always. If the pipe distance between your low loss header ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Another 17kw Grant Heat Pump - Advice Needed!

@bretix the dial on the HW cylinder is just a cylinder stat, turn and set it to whatever hot water storage temperature you want, it will then revert t...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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