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@heacol
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Noble Member
Joined: Aug 6, 2021
Last seen: Jul 6, 2025
Profile Activity
Topics: 3 / Replies: 396
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Reply
RE: Our Vaillant VWL year end review - North East Scotland

@neilhighland Have a look at the Panasonic T cap, a little more expensive but a far superior unit. You get what you pay for.

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Ground Source Heat Pump Systems and Their Design
1 year ago
Forum
Grounds Source Heat Pump (GSHPs)
Replies: 0
Views: 712
Reply
RE: Heating and Hot Water Issues with Thermal Store/Heat Pump

Sorry to be the bearer of bad news, your system is designed for a high temperature heat source, back boiler, on-off old type gas or oil boiler or biom...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson Unfortunately unless you change the installation, anything you do will have little effect on the performance of the system. Heating systems a...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson I know they would say that, all Grant is interested in is stopping their unit from suffering low flow errors, they do not care about you and ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson Possibly, but I still think it is a water flow issue looking at the pictures. You will find a huge difference removing the low loss header an...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson You are fighting a loosing battle, the low loss headers and the high temperature zone valves are tying both arms and 1 leg behind your back. ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How do I choose a single room MVHR to prevent losing heat in my bathroom ?

Yes it does, a direct swap, same 4" hole. The mini is fine.

1 year ago
Forum
Insulation
Reply
RE: How do I choose a single room MVHR to prevent losing heat in my bathroom ?

I helped develop these, they are brilliant, I have 1 in my house and no damp or condensation.

1 year ago
Forum
Insulation
Reply
RE: Are antifreeze valves essential for a glycol free ASHP system?

@abernyte It very much depends on how your system is designed and operated. The poorer the system and SCOP the less effect glycol has on the overall p...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are antifreeze valves essential for a glycol free ASHP system?

This is correct but you have not calculated the pumping requirements correctly. You have forgotten the increase in viscosity of the glycol mixture. At...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Electricity use for heat pumps - comparing homes and consumption

SCOP 5.3, not even close to the UK record. 😀

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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