£9bn due to not having built more cheap onshore wind, £5bn due to poorly insulated homes, £5bn due to low solar deployment, £3bn because new homes were built less efficient.

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24 points

Having lived in Australia and New Zealand and spent time in Chicago. British houses are horseshit.

Don’t even need heating in standard UK temps if the building is insulated. Air to air heat pumps are amazing, induction is amazing, no issues with electric water heaters.

Living in fucking 1975. But everyone’s ideal is trying to upgrade to a 1850 wood burning stove. Buy a fucking heat pump and some insulation.

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10 points

Ah, but then you’ll have to put up will all the folks whining about new builds, and that a waste outlet pipe wasn’t connected properly, Vs a 60-70s that’s still standing so must be much better, as long as we ignore the black mold in the cavity that is slowly killing us.

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12 points

And also the 40 odd years of “DIY” bodge jobs holding it all together

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3 points

Heat pumps are great when the house is designed for it. Average uk house with shitty insulation and radiators that are unable to heat the room unless the water is really hot - it’s not going to work well.

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4 points

I don’t see how and air to air heat pump wouldn’t work.

Insulation needs to be solved yes. But if you heating your house with gas verse electricity if the output is the same then the result is the same.

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-1 points

Something to do with physics. It’s not just about the heat output from a gas boiler vs heat pump. It’s the output from the radiator to the room that matters. For the same output, a gas boiler heats the water to a higher temperature than a heat pump. Which means a radiator gives out more heat to the room. As an extreme example, if it is freezing outside and the heat pump produces a lot of water at 15c, it may have a high thermal output but still wont keep your room warm. If it produces water at 30c, the radiator will transfer some heat to the room, but unless the radiator is very big or the room is well insulated, probably not enough.

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5 points

Not true. Heat pumps just need to be sized correctly

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3 points
*

Link me to a heat pump that produces water for central heating at 70C or more. Typically, flow temperature is closer 40C, which won’t heat the average house unless you increase (possibly double) the size and/or number of radiators. Which is expensive and not always feasible. You can run heat pumps at higher flow temperatures, but that reduces their efficiency. Don’t get me wrong, i think they are great. But successfully retrofitting to old UK housing stock needs expertise that is in short supply.

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2 points

My parents 1741 house with new double glazing is like that - cool in summer, hot in winter without even needing the heating

I’m amazed that we collectively forgot how to build houses but I guess 2ft thick walls make a dent in the size of the living space and you’ve got to build a box with paper thin walls and no garden to optimise that

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