If your roof space turns into an oven over summer, this 35W solar roof vent fan is genuinely one of the better fixes you can make to your home. It pulls hot air out and replaces it with cooler outside air, which can drop roof temperatures by up to 30 degrees — and you'll actually feel the difference inside. Compared to a standard whirly bird, this thing moves over 20 times the airflow, pushing up to 2100 cubic metres of air per hour. And because it runs entirely off a monocrystalline solar panel, there are zero electricity costs and no need to call an electrician.

It works on tile, Colorbond and flat roofs, and the solar panel has an adjustable tilt so you can get a decent angle even if your roof isn't north-facing. A built-in thermostat means it automatically shuts off when temps drop below 25°C, so you're not losing warmth in winter without even realising it. The brushless DC motor runs quietly — under 45 dBA — and the aluminium body with stainless steel fasteners means it handles coastal conditions without corroding. It's a solid, set-and-forget setup for homes, garages, sheds and workshops alike.

You'll find this one over at Simpledeals at great value, and you can grab it on Afterpay too if you'd rather spread the cost. Everything you need for installation comes in the box — flashing, screws and rafter straps included. Honestly, for what it does and what it costs to run (nothing), it's well worth it.