The restaurant next to my bedroom has a new machine, I suspect it's either an airconditioner or some sort of extractor fan (I think the latter, because it's not on all day), my father thinks it sounds like a compressor. It might just be not something new, but something old that needs maintenance and/or cleaning.
I can hear it clearly, usually from the afternoon until around 11pm on Sunday, Tuesday and Wednesday and on Thursday, Friday and Saturday until just before midnight. Which means it's usually off by the time I go to sleep. However, not last night. The thing was on all night, and although during the day and evening it's a hum in the background during the night it's a very annoying sound. I eventually put in my earplugs.
They visit our store regularly, so I'll have to ask them if they have a new machine, strongly hinting that I can hear it clearly in my bedroom. Hopefully they forgot to switch it off last night and it isn't a concious decision to keep it on, but otherwise I'll pop by next week to ask if them to switch it off during the night.
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