Oil Column Heaters
Compact and portable, oil heaters offer gentle, consistent heat that lingers throughout those chilly mornings and frosty nights. No flames, no fumes – just steady, reliable warmth when you need it most. Ready to beat the winter chill? Turn up the heat with oil column heaters from sizzling brands like DeLonghi and Goldair at Harvey Norman!
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From energy use to overnight safety, get expert tips for choosing the right model for your home.
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Oil Column Heaters: The Ultimate Winter Warmers!
What is an oil heater and how does it work?
Oil heaters – also known as oil radiators and oil column heaters – are the slow and steady champions of home heating. These portable electric heaters use a hidden element to warm up (but never boil) oil that’s sealed inside metal fins. That oil then radiates gentle, consistent heat, keeping your space warm and toasty for hours.
Unlike heaters that blast hot air, oil column heaters build heat gradually, delivering long-lasting warmth that helps maintain a steady room temperature that’s ideal for bedrooms, studies, and living areas.
Here’s what sets them apart:
- Range of Sizes – From compact 5-fin models for bedrooms, to larger 11-fin heaters for living spaces.
- Easy to Move – Many models include wheels or cool-touch handles, so they’re easy to move from room to room.
- Near-Silent Performance – No fans mean no noise – just quiet, consistent heat.
- Efficient Heating – The oil retains heat even after the unit is switched off, making them an efficient way to warm up small to medium spaces.
Do oil-filled heaters need to be refilled?
Not at all! Despite the name, the oil inside oil-filled heaters is completely sealed within the unit, so there’s no need to top it up, replace it, or worry about messy spills.
In this type of heater, the oil isn’t used as fuel. Instead, it works as a reliable heat carrier, circulating warmth through the columns without ever burning off or evaporating. Once you plug it in, the mineral oil quietly gets to work behind the scenes, absorbing heat and spreading consistent, comfortable warmth throughout the room.
Do oil column heaters use a lot of electricity?
Not really – it all comes down to the size of the room you’re heating and the wattage of the heater. Most oil column heaters range from 1.5kW to 2.4kW, but their real energy-saving advantage lies in how they work.
The oil retains heat, allowing the unit to cycle on and off once your room reaches the set temperature. The means you stay warm even after the heater switches off, making oil heaters a more efficient option than some traditional electric or gas models.
Many models also include clever features that help you manage your energy use, like:
- Adjustable Thermostats – Dial in a level of warmth that hits just right and let the heater do the rest.
- Timers – Pre-warm your room so it’s toasty before you even roll out of bed.
- Multiple Power Settings – Choose the right output for your space to avoid using more power than you need.
- Eco Modes – Prioritise energy use without sacrificing comfort – a must for staying warm while keeping costs down.
Are oil column heaters hot to touch?
Unlike exposed element heaters, oil column heaters radiate a gentle, steady heat – enough to keep things warm and cosy, without being scorching hot.
Designed with safety in mind, many models include features like cool touch handles and built-in temperature limits, so you can safely move them even while they’re on. It’s one of the reasons oil heaters are so popular with families, especially in homes with curious kiddos.
Can you sleep with an oil heater on?
Yes, you can – that's why people love oil heaters! They’re whisper-quiet, fume-free, and give off a soothing, consistent warmth that keeps bedrooms comfy all night long in the colder months.
Most models now come with sleep-friendly features like:
- Overheat Protection – Automatically turns off the heater if it gets too hot.
- Tip-Over Shut-Off – Cuts power if the heater is accidentally knocked over – handy for busy households with young kids or pets.
- Built-In Timer – Lets you set the heater to switch off after you’ve drifted into dreamland.
For peace of mind, choose a model with a thermostat or sleep timer so you can set and forget. Make sure your oil heater is placed on a flat, stable surface, with at least a metre of clearance from curtains, bedding, or furniture. Always plug it directly into a power point – not a power board or extension cord – and use a low heat setting overnight to stay warm without overheating.
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