Why choose a column heater?

What is a column heater?

Column heaters are a reliable and popular electric heating option for warming medium to large rooms. They work by heating a liquid or metal element inside their vertical fins, slowly releasing warmth into the surrounding air. While they may take longer to heat up, they provide steady, lasting warmth that continues even after the heater switches off. There are two types available: traditional oil-filled column heaters and newer oil-free models, which deliver similar comfort in a faster and more energy-efficient way.

Best for

Column heaters, including both traditional oil-filled and modern oil-free models, are ideal for consistent, long-lasting warmth in medium to large rooms. They’re especially well suited to:

• Bedrooms, lounges and shared living areas
• Spaces used for long periods like home offices or living rooms
• Overnight heating or quiet environments like kids’ rooms
• Well-insulated homes that need steady background warmth
• Customers wanting a low-maintenance, low-noise solution

Oil-filled models retain heat after switching off, making them great for keeping rooms warm overnight. Oil-free options heat up faster, are lighter to move, and offer a more energy-efficient alternative without compromising on comfort or silence.

How it works

Oil column heaters contain a sealed reservoir of thermal oil that is heated by an internal element. As the oil warms, it circulates through the columns or fins of the heater. These heated fins then radiate warmth into the room.
This process provides slow, steady heating that continues even after the unit is turned off. Because the oil is sealed inside, it never needs replacing or refilling. Oil-free heaters use fast-acting metal elements that heat up and cool down quickly without relying on oil. This makes them faster to start and more portable, with similar radiant warmth. Both types provide gentle, silent warmth with no exposed elements or fans, making them ideal for bedrooms or shared living areas. There’s no fan involved, which makes column heaters completely silent during operation.

Key features and benefits

• Adjustable thermostats and timer functions
• Multiple heat settings for flexible control
• Castor wheels and carry handles for mobility
• Tip-over shutoff and overheat protection
• Low surface temperatures means is safer for families

Oil-free vs oil-filled column heaters

What to consider

• Heat-up time: Oil-free models heat up faster, while oil-filled versions retain warmth longer once switched off.
• Portability: Oil-free column heaters are typically lighter and easier to move around the home.
• Energy use: Oil-free heaters may be more energy-efficient during shorter runs, while oil-filled options are better for continuous, low-power use.
• Safety: Both types often include tip-over protection and thermal cut-off. Look for timers or thermostats for better control.
• Noise level: Column heaters are near silent, ideal for bedrooms or late-night use.

Matching wattage to room size

To choose the right heater size for your space:

• Small rooms (bedrooms, studies under 10m²) typically need heaters over 1kW.
• Medium rooms (hallways, dining rooms 10–18m²) suit heaters up to 2kW.
• Large rooms such as lounges or open-plan spaces often require heaters over 2kW

Oil-free models are especially good for medium to large rooms where you need quick comfort or portable warmth that can be moved as needed. This helps ensure efficient heating without overloading your power usage. You can also look for room guides on packaging or product listings to match wattage with room type.

Take a look below at the recommended rooms for this heater:

Power use & running costs

Oil column heaters are not the fastest to heat up, but they’re very efficient for maintaining warmth over time. Their thermal mass helps retain heat even after they’re turned off, which can lower overall running time and reduce energy use in well-insulated spaces.
Heater running costs depend on wattage, electricity rates in your area and how long the heater runs each day. As energy prices can fluctuate across New Zealand, use cost calculators or your electricity provider’s tools to estimate usage. For the most accurate info, base estimates on your local kWh rate and usage patterns.

Column vs other heaters

Choosing the right column heater

To pick the best model for your space:

1. Match heater wattage to your room size (larger rooms = higher wattage)
2. Look for built-in timers if using overnight
3. Choose a model with a thermostat for energy efficiency
4. Prefer a freestanding unit with wheels for flexible placement
5. For added safety, ensure it has automatic shutoff features

Explore the range

Whether you’re after long-lasting warmth overnight or fast, portable comfort, there’s a column heater to suit your space. Browse traditional oil-filled models or newer oil-free heaters from trusted brands like Goldair and Nouveau

Want help choosing?

Compare electric heater types below or jump straight to the one that suits you:

FAQ's