Dehumidifiers: when they help, how to size them, what they cost to run
A dehumidifier is a tool, not a universal therapy. It acts on air. It does not dry a wall with rising damp.
Here: criteria, a sizing estimate, and running cost — using the kWh price from your own bill.
Guides
Dehumidifier: when it actually helps (and when it is wasted money)
Honest criteria for whether a compressor dehumidifier is the right tool. No ranking of untested models.
Indoor laundry: how much moisture it adds (and what to do)
A full wash can put litres of water into the air. When to air, when to dehumidify, when to move the rack.
Dehumidifier electricity use: estimate it from your bill
Watts × hours × your €/kWh. Why IgroCasa does not bake in a tariff, and how to use the calculator.
Dehumidifier, extractor or MVHR: what you actually need
A method comparison, not a brand roundup: when to extract vapour at source, when to dry room air, when continuous ventilation is the job. No model rankings.