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AllyFish
@allyfish
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Joined: Oct 31, 2022
Last seen: Nov 30, 2025
Profile Activity
Topics: 23 / Replies: 490
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Reply
RE: Installation queries for Grant Aerona

@jwilliams89 Likely under ECO4 the installers will fit the Grant Chofu controller, which comes as standard with the Aerona. The smart controller hasn'...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air source heat pumps and noise

Done @editor, please confirm receipt. Average 46dB(A) SPL @ 3.5m for Grant Aerona3 10kW

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installation queries for Grant Aerona

Highly likely a Grant scheme installed under ECO4 will have a LLH and secondary circulating pump. They are not the most efficient system installation,...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

Hi, some info on Grant website on user level parameter adjustment. Not had a look in detail, Grant are slowing realising that the installer manual is ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

@roamingbull hi there, as a comparison, I have around 155m2 of heated space, and the 10kW Aerona. I was hitting 50kWh per day last weekend in the exce...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

WC works completely autonomously, it doesn't reference room temperature. Parameter 21 05 is the maximum outdoor air temperature at which, with WC enab...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

In theory, yes. You may need to adjust the WC parameters, or the flow rate to certain emitters to fine tune it. Every house and heating system is diff...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

[/quote] Hi again, if Weather Compensation [WC] works right then your heating will regulate based on that. Hive thermostats cycle the ASHP on and off...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

Same here @Marvinator80. I have max LWT (in my case 45degC) set to 0degC. To be fair below 0degC I don't reach max LWT, due to continual defrost cycle...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant ASHP not reaching target temperatures

Hello and welcome. The Grant Aerona units are known to spend a lot of time in defrost in winter conditions, usually every 45-60 minutes. That does see...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

@mike-patrick I called Grant HQ. They arranged for Olly the local service engineer to attend. Pricey service of the ASHP and system cylinder at £250. ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

The Grant units seem particularly keen to defrost around every 45 minutes when there's high relative humidity and the evaporator refrigerant temperatu...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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