When I was young, we had a piano in the dining room which slowly, over the course of a few years, refused to be tuned. By the end of its short life, it was sounding less like a classic upright and more like a honky-tonk piano from a saloon bar. Sadly, we didn’t realise the cause of its rapid demise until it was too late. It was all to do with humidity. Few of us realise how important humidity is in the home and how it can affect our health. It’s not just a rogue piano-destroying force; overly damp air and overly dry air can pose their own unique problems, both to our surroundings and to our health.

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