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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 19, 2025
Profile Activity
Topics: 17 / Replies: 2696
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RE: Why Your MCS-Certified Installer Might Not Be As Competent As You Think

Hive and most other smart thermostats don't play well with heat pumps and should generally be disabled.. Radiators should be luke warm most of the tim...

3 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: Why Your MCS-Certified Installer Might Not Be As Competent As You Think

I'm more than happy to try to help. Are you operating the heat pump 24*7 with all, or almost all, trvs fully open, room thermostat if any set...

3 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Why Your MCS-Certified Installer Might Not Be As Competent As You Think

Are you operating the heat pump 24*7 with all, or almost all, trvs fully open, room thermostat if any set at least 2C above target and weather compens...

3 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Why Your MCS-Certified Installer Might Not Be As Competent As You Think

@adisharma I'm really sorry to hear about your experience which unfortunately, whilst relatively rare, is not unknown in the renewables industry, or...

3 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Commencing on an ASHP Installation Process

@sheriff-fatman Thanks for the very well thought through summary, which has elements common to others who report problems. Fortunately there d...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Anyone able to provide some feedback before I make my finale decision? Samsung vs Baxi vs Vaillant

Havenwise is (or at least was when I spoke with them about 6 months ago) an online only service, no hardware required (other than an internet connecti...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump installation and BUS Grant timings

I apologise that I must correct the above. Clause 5 of the regulations still requires a valid EPC. Clause 6 which previously specified that the epc ...

3 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Heat pump installation and BUS Grant timings

I have seen it argued that 'fabric first' is favoured by the fossil industries as a great way to delay material action. The carbon dioxide savings ...

3 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Samsung heat pump sizing

I wouldn't be so sure about that. Heat pump designers will optimise for max scop at rated output by playing games with the operating point on the cur...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung heat pump sizing

This screenshot from the John Cantnor video on cycling shows why it's highly likely that an someone significantly oversized heat pump is less efficien...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung heat pump sizing

Fair enough. With R290 heat pumps, which seems to be the direction if travel for reasons of gwp, this is possible natively at a cop of >1. We j...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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