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	RE: Heatpunk Floor plan issues By ASHP-BOBBA, 2 days ago Forum Safety, Regulations, Tools, Plumbing & DIY Installations
	Most companies will do this for you for around £200-£300 as it takes and while and a licence software that is normally expensive.
	RE: Predicted Heat Loss & Needs from MCS calcs vs EPC vs actual By JamesPa, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	My house/experience: a) 2off 'professional' 3 hour surveys: 16kW. One I paid £300 for the other was FOC, different surveyors/heat pump installers b) DIY heat loss calculations using MCS assumptions ...
	RE: Vaillant aroTherm not heating with many faults By ASHP-BOBBA, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	@anon67 when was it last serviced? 1st thing to do is switch it off, clean the outdoor coil thoroughly with a watering can of gently warm water maybe 4 cans to drag the non visible dirt form the fins,...
	Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help! By razz, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	Hello all,I'm new to the forum. Just had an octopus cosy 12 installed on Friday. Massively regret it already. It's incredibly loud, not looking very cheap, and doesn't heat the house very well. Insid...
	RE: Predicted Heat Loss & Needs from MCS calcs vs EPC vs actual By Majordennisbloodnok, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	Not sure I entirely agree, @benson. In his last post, @tim441 provided an estimate based on actual measured figures. The MCS approach has improved but it’s still based on a model, not measured figures...
	RE: Predicted Heat Loss & Needs from MCS calcs vs EPC vs actual By Tim441, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	@benson indeed!!! But at least my estimate is based on real world. However you cut it the worst case would be a COP of 2.5 and I am sure its not over 3.5 for a LG. Across heating and hot water. If it ...
	RE: Predicted Heat Loss & Needs from MCS calcs vs EPC vs actual By benson, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	@tim441 do you not see the irony that you are using your estimate, to say that the other estimations are wrong?
	RE: Vaillant aroTherm not heating with many faults By Anon67, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	@jamespa Going off those faults it's looking more towards a blockage of some sort. I had a look at the diverter valve, it's a honeywell v4044c, I can move the valve to the open manual position and wh...
	RE: Setback savings - fact or fiction? By SUNandAIR, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	Excellent graphics and description Rob…. But to my mind there are amounts of energy that need replacing in this defrost event which aren’t portrayed in this chart. 1. The 12 minutes of zero heat (wate...
	RE: Predicted Heat Loss & Needs from MCS calcs vs EPC vs actual By Tim441, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	@benson i totally accept its an estimate but surely it should be closer to reality? Otherwise most people could probably do better based simply on previous gas/elec/oil bills and making simple informe...
	RE: Predicted Heat Loss & Needs from MCS calcs vs EPC vs actual By benson, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	Any of these calculations will be an estimate. When you consider the steps an assessor would need to take to calculate it precisely, it simply wouldn't be feasible (i.e. invasive surveys). There's oth...
	RE: Predicted Heat Loss & Needs from MCS calcs vs EPC vs actual By Tim441, 2 days ago Forum Air Source Heat Pumps (ASHPs)
	I'd be interested in other experiences - if you have the data. Clearly heat loss calcs and EPCs depend on quality of assessors in the first instance. I'm contemplating challenging my latest EPC - but ...