Is there a straightforward way to estimate whether a small (24 kbtu), medium (36 kbtu), or large (48 kbtu) unit would be most appropriate for a given home?
I'm not a heatpump export, but if that's continuous output, with an SCOP of say 3.8 (what I had quoted in the UK for an airsource -> water -- UK heating is typically hot water run from a boiler through radiators in each room rather than pumping hot (or cool) air direct to the romm via ducted which seems common in the US, perhaps because of the historical desire/need for aircon)
That would require 1.8/2.6/3.7kW of electricity to run. In the UK at 35p/kWh that would mean 91p to generate 10kWh of heat. For reference my oil boiler at 95% efficency and current prices is about 6p/kWh, but we have had insanely high electricity charges this year. Back in September my oil heating approached 10p/kWh -- about £1 a litre.
£500 for what? Total cost for a month? A year? The monthly average of a full year of costs. The monthly average cost thing is common in NL; people often have no clue other than knowing the monthly average cost. And it's often estimated beforehand by the energy company. It's assumed to be correct.
Anyway, people need to check the SCOP instead of figuring out if it is efficient (COP) at a certain temperature.
> On that note I think biopropane will be the solution for Europe.
Oh please no.
On UK, I was in Scotland. I thought the homes in NL are often terrible quality. Scotland was another level. Pretty much no insulation, terrible windows. Really drafty. Yet the media (as a result the public as well) hates the "Insulate Britain" movement.
The number of homes that could have improvements in insulation for tiny costs is astounding, but somehow insulating a home is some lefty woke thing.
https://www.indeed.com/career-advice/career-development/manu...
Assuming they mean kbtu/h continuous and not kbtu, 12kbtu/h is ~3.5kW. So, 7, 10, 14 KW units.