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	RE: Experience - New Build / Complete New Heating System By Bash, 17 minutes ago Forum Air Source Heat Pumps (ASHPs)
	@vincro We have a similar sized 1950's semi with a 2005 extension, lots of glass and an open fireplace. Our heat loss was calculated at 6.2kw and testing this before our HP install later this month b...
	RE: Heat loss based on gas usage By Bash, 22 minutes ago Forum Air Source Heat Pumps (ASHPs)
	@jamespa Thanks. The numbers posted above were just for the coldest day over the last few weeks. Looking through the bright app it's similar across many days over the last few weeks suggesting it's n...
	RE: Experience - New Build / Complete New Heating System By vincro, 29 minutes ago Forum Air Source Heat Pumps (ASHPs)
	@jamespa I would wholeheartedly agree with you. In all the videos of @editor, I never recalled anyone talking about such HUGE pumps. Certainly a rarity rather than the norm. It was one of a few red ...
	RE: Heat loss based on gas usage By JamesPa, 36 minutes ago Forum Air Source Heat Pumps (ASHPs)
	In a word yes. Measurements based on a single day should be treated with extreme caution, houses take a long time to react. However as a general indication this is likely to be good. L...
	RE: Experience - New Build / Complete New Heating System By JamesPa, 42 minutes ago Forum Air Source Heat Pumps (ASHPs)
	Newbuild 200sq m house, 16kW? Somebody is having a laugh at your considerable expense. Either the construction standard is appalling or the loss is way out. My 1930s 200sq m house with partial iwi o...
	RE: Heat pump not reaching flow temperature By JamesPa, 57 minutes ago Forum Air Source Heat Pumps (ASHPs)
	I would describe this as either a fault or a configuration error. If the ft isn't changing with oat then wc isn't working, your heat pump won't be efficient, and you won't be comfortable. The instal...
	RE: I’m glad the cold spell is over! By Mars, 1 hour ago Forum Your Home
	Thanks for the update, @judith. Cold spells with heat pumps can be brutal, especially with the price of electricity, but thankfully those extremes tend to be short-lived in the UK. I remember a spell ...
	Heat loss based on gas usage By Bash, 1 hour ago Forum Air Source Heat Pumps (ASHPs)
	We are 2 weeks away from our HP install. In October I dropped the flow rate down on our Vaillant gas boiler to 45c, to match our HP design temperature. We are upgrading all the radiators as some are w...
	RE: Experience - New Build / Complete New Heating System By Mars, 1 hour ago Forum Air Source Heat Pumps (ASHPs)
	Welcome to the forums @vincro and good luck with finalising your proposals and quotes. Also look forward to your updates. One thing I've started recommending to all homeowners is to get an estimate fr...
	I’m glad the cold spell is over! By Judith, 1 hour ago Forum Your Home
	Just a sigh of relief that the cold spell is over and the COP has gone up from 3.0 to 3.9. On our worst day on the 5/6Jan the ASHP used 65kWh of electricity producing 177kWh of heat. (DHW in addition)...
	RE: Heat pump not reaching flow temperature By DaveC, 1 hour ago Forum Air Source Heat Pumps (ASHPs)
	@jamespa the compressor does run at max operating frequency in these lower temperatures (2 degrees and below) and doesn’t seem to have any opportunity to reduce to try and achieve a better running eff...
	RE: Post-Traumatic Heat Pump Stress Disorder By JamesPa, 2 hours ago Forum Government Schemes, Regulations, Training, Planning & Organisations
	@johnbroome As I say I think you probably have a fault which needs fixing. However there may also be an opportunity to tweak how it's run. The understanding of the best way to run heat pumps has pr...