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What If I Told You North-Facing Windows Were Free Heaters in Winter?

It sounds too good to be true, but north-facing windows can act like free heaters for your home in the colder months. It’s all thanks to passive solar design – one of the simplest, most effective ways to make your home naturally comfortable. How Passive Solar Design Works The idea is simple. Position your home …

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It sounds too good to be true, but north-facing windows can act like free heaters for your home in the colder months. It’s all thanks to passive solar design – one of the simplest, most effective ways to make your home naturally comfortable.


How Passive Solar Design Works

The idea is simple. Position your home so that in winter, the low-angle sun streams in through north-facing windows, hitting surfaces like floors and walls that can store and release that warmth. This gentle, natural heating means you barely need to flick the heater on.

It’s free warmth, all day long – no gadgets required.


The Summer Catch

But here’s the thing. What keeps you cosy in winter can turn into an unwanted oven in summer if you don’t plan ahead. Without the right shading, that same sunlight will blast through your windows during the hotter months, making your home uncomfortably warm.


Finding the Balance

The secret is controlling when the sun gets in and when it doesn’t. Here are a few smart ways to do it:

  • Eaves – sized just right to block the high summer sun while still letting in winter light.
  • External shading – awnings, pergolas, or blinds that can be adjusted seasonally.
  • Deciduous trees – leafy in summer for shade, bare in winter for sunlight.

By planning these elements early, you can enjoy the benefits of passive solar design all year round without the seasonal downsides.


Why It’s Worth Doing Now

You can’t change your home’s orientation after it’s built – so getting this right in the design phase is crucial. Done well, passive solar design can:

  • Reduce your heating and cooling bills significantly
  • Make your home brighter and more inviting
  • Improve your home’s comfort without extra running costs

It’s one of those choices that costs nothing to plan but pays you back for decades.


Follow me on Instagram @katrinas_instagram for more behind the scenes of my new 8-star build.

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Katrina

Katrina

Full-time day job as interior designer for sustainable construction company Passionate about creating beautiful, functional spaces tailored to clients' needs and styles.

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