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AllyFish
@allyfish
Contributor
Noble Member
Joined: Oct 31, 2022
Last seen: May 2, 2025
Topics: 22 / Replies: 463
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RE: ASHP - a few (probably dumb) questions about the lived experience

Hi @lickofpaint. Welcome. Quite common not to have ASHP heating on 24/7. We prefer it cooler overnight, and while our Grant ASHP is very efficient and...

8 months ago
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RE: How loud are the sound levels of internal components like water heater, buffer tank, etc. in an air source heat pump set up?

@richard24738 insulation won't transmit noise. But any support between piping and roof space would benefit from being vibration absorbing rubber lined...

8 months ago
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RE: How loud are the sound levels of internal components like water heater, buffer tank, etc. in an air source heat pump set up?

That's normal for smaller pumps, such as home central heating ones, the pipework takes the weight, but the pipe supports should then have some cushion...

8 months ago
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RE: Octopus Cosy 6 installation (fan boy video)

Looks like a gents urinal at a music festival. Only a matter of time until someone pi$$es into it.

8 months ago
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RE: How loud are the sound levels of internal components like water heater, buffer tank, etc. in an air source heat pump set up?

If the hydronic piping to radiators or UFH is correctly sized, there should be little noise. Noise tends to be caused by one or more of these factors:...

8 months ago
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RE: Ducting an air source heat pump for the purpose of potentially fitting it the cellar

The problem with ducting or enclosing a ASHP is adding external static pressure (ESP) to the fan. The fan impeller is designed to move large volumes o...

8 months ago
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RE: Are you planning to use a wood burner to supplement your central heating this winter?

Our log burner will be used for supplementary heating when the weather turns and the dark nights draw in. We don't really need to light it, but it's a...

8 months ago
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RE: How Poor Water Quality Can Destroy Your Circulation Pump

Hi @Graham Brennand, Grant's installers don't seem very consistent on glycol. Grant recommend it, but a lot of their systems, mine include, use water ...

8 months ago
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RE: Grant Aerona 13KW - can I boost it?

Well ideally @johnmo, but I have a coupe of things that work against that; I have a 22 rad system over 3 floors, 28mm CU primary, 22 and 15mm Cu secon...

8 months ago
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RE: Grant Aerona 13KW - can I boost it?

@marvinator80 that's interesting. I know from your previous install pictures you would be struggling to make space for an internal volumiser. The 3kW ...

8 months ago
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RE: DIY Heat Pumps.

I'd be a little cautious about this generalisation Martin. Most F-Gas refrigerant engineers have specialist training and competency that comes at a pr...

8 months ago
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RE: Is the Grant controller a thermostat?

@dodgyknee hi, here's Group 46 parameters changed from default for me, default in [ ] 46 00 = 3 [0] heater enabled in supplementary mode 46 01 = 4...

9 months ago
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