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Piano care

Why Toronto's Weather Is Hard on Your Piano

If you own a piano in the Greater Toronto Area, the single biggest threat to keeping it in tune isn't how often you play — it's the weather outside, and the air inside your home.

The real culprit: humidity, not temperature

A piano's soundboard is a large, thin sheet of wood, and wood constantly trades moisture with the air around it. In a humid Toronto summer, the soundboard absorbs moisture and swells, raising string tension — the piano tends to go sharp. When the furnace kicks in for winter, indoor air gets bone-dry, the soundboard shrinks, tension drops, and the piano sags flat. Over a single year your instrument can ride that wave up and out of tune and back down again.

Why our climate makes it worse

The GTA gives a piano the full workout: muggy summers and long, dry, heated winters. The bigger the swing between the two, the more your piano moves — and the more often it benefits from tuning. Pianos near a heating vent, a fireplace, a frequently-opened exterior door, or a sun-soaked window get the harshest treatment.

What you can do between tunings

The takeaway

You can't change Toronto's seasons, but you can blunt their effect: hold your indoor climate steady, place the piano thoughtfully, and tune it regularly. Do that, and your piano stays in tune longer and lasts for decades.

Serving Toronto and the GTA. Book a tuning or call (416) 237-0488.

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