Honest answers to the question: is it worth it?
Guide
Is a robot vacuum worth it for a small flat?
Yes, even on 30 to 60 m² it's worth it for most people, and an entry-level or mid-range model is often enough. If you otherwise vacuum twice a week and mop once, my calculator says you save between half an hour and almost a full hour a week. It's not for you if there's no room for the base station or you don't want to tidy up quickly before it starts.
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Guide
Air fryer or oven: which is cheaper?
For small amounts the air fryer is cheaper: in tests it often uses only half the electricity per dish, or even less. At 37 cents per kWh you save around 13 to 33 cents per dish. If a large amount needs several batches, the oven is just as good or even cheaper.
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Guide
Robot vacuum with pets: what matters?
Three things: a brush that pet hair hardly wraps around, a base station that empties it, and a camera that usually recognises dog poo and drives around it. In the app you also block off the bowl, litter tray and sleeping spot. With a pet it's especially worth it: if you vacuum every day because of the hair, my calculator says it saves you around two hours a week on 60 m².
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Washer dryer or washing machine and tumble dryer: which is better?
If you're short of space, the washer dryer is the more convenient choice: one machine, no moving laundry across, in in the morning and dry in the evening. If you have room for two machines and do a lot of washing, a washing machine and heat pump dryer are better. They dry more at once and often use only half the electricity for drying, or less.
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Guide
Are smart thermostats worth it in a rented flat?
Mostly yes: you screw them on without a tradesperson and off again when you move out, and you come home to a warm flat every day. With a heating schedule you also save around 10 percent of heating energy. With central heating, usually half to just over two thirds of that shows up on your bill, because only part of the costs is split by consumption.
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