SteamyTea

A lot of it has to do with the volume of air you need to shift. In a car this is easy as it is small, and the noise is masked. A house is very different. If you really want to control each room, then you need to have a water based heater/chilled in each input duct, and each room will need an extract duct. As well as individual control for each room. Then you will need 2 separate systems, one to heat and the other to cool. Large ductwork as well as separate fans for each room. Fun system to design, install and commission. Would get a really fat user manual too.

I worked at the RNIB head office in London. They had zoned heating, air conditioning and lighting. Was an expensive system, ticked all the boxes for a charity, except one. It was useless.

It was what the British Empire, and buggery, were built on. Probably why I am social liberal and European.

I can believe both of them. It annoys the hell out of me when I see delivery drivers doing it. And Taxi drivers. School run Mums and Dads. Ambulences Neighbour's friends Road Crews. Such an easy thing to do, but very few bother. I turn my engine off when I am at a red light.

How will they leave it ticking over for hours, alongside the Toyota or Landrover pickup, that is ticking over too. Why do farmers only turn the engines off once they are parked back in the shed.

Chaucer and Hardy. Put me off reading for decades. Lewis Carroll's 'Alice' stories where a response to quantum theories, so would have been much more interesting to me.

I went to a posh, minor, public school, never had oysters on the menu. Fought over a small tray of chips once.

This is more a job for air conditioning rather then MVHR. MVHR works on the little and often principle.

Does it really need to be perfect?

Can't you just get a USB wireless adapter?

That is because they are. Just a matter of where you stand really.

Any chance it is just getting hot. Stopping for a minute or two while dealing with the faulty firings may be enough to cool it a little. Or it could be the nails, have a good look at the next batch.

Not talking alcohol induced, more running around a 40°C commercial kitchen for 6 hours. Trust me, you sleep after that.

Can you design the house so that the ES is, initially, separate from the bedroom. But in the future a new doorway can could be fitted to connect the two. Or do what I do, work before bedtime, then I am a little dehydrated for the night, and tired. I sleep quite well because of this. Mornings I get up early, tea and fags for an hour or two, then shower/bath. No one is disturbed. Living alone is the real answer.

That will be the glass ceiling then, well until it is shattered.

@JSHarris I was actually thinking that these could do the donkey work and something very low powered would sit on desk. It seems a shame to have loads of low power, but powerful computing and just run a simple task or two on them.

What is the standard deviation, i.e. does it happen a few times in a row, begining of nailing, towards end of nailing session, or apparently randomly.

As most if these small, but powerful, computers probably have a spare bit of capacity, how well would they work with thin clients (term may have changed now to Cloud something or other). Be a lot less clutter on my desk to have just a monitor and keyboard. Easy to move too.

That is about a third of what my whole house used yesterday.

You should at least know how much DHW energy us needed. Wind direction and speed have a big affect on performance. Strong South Westerlies are warm, week Easterlies and Northern winds are cold, and in winter there is little solar gain to be had in the 6 or 7 hours of daylight.

You can always fit PV at a later date, though it need not cost more than a tiled roof. Again, parts can be self-sourced. 300 m² is a big place, about 6 times the size of mine. So without a lot of insulation under the UFH and perimeter, you stand to loose a lot of energy. Is it realy any cheaper to fit radiators upstairs, rather than UFH into the floor? You can use a different spacing for the pipes to limit the energy transfer. Have you done the heat loss calculations and DHW usage yet?

Going to be hard to gauge the effectiveness of any ASHP over the late spring and summer months. Do you collect external weather data?

02/09/2019 09:03, 17.125°C Full day off as well. Bikini weather.

May be worth improving the walls with some extra insulation it it is possible.

Is that total emissions (absolute), or CO2/kWh emissions (relative).