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Wasn't this a case of people fitting window-mounted units without realising they needed planning permission first? I'm also in the UK.
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I think so, or even more permanent ones. since it’s London I assume flats where you need permission for any number of outdoor units but it’s then one for semi detached and two for detached houses - one of the examples in the article is someone with three outdoor units afaict.
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AC is not banned in Germany, but it is unGerman to have one.
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I feel like that changed in the last 2-4 years, coinciding with the advent of heatpumps in Germany.
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