Umair Gaines
As the cold season approaches, many people start to think about the costs of heating their homes. Electric heaters are convenient and often cheaper upfront, but they can be expensive to run. Oil-filled column heaters are a popular choice for those looking to save money on their energy bills. They are generally the cheapest type of electric portable heater to run, although they take longer to heat a space, so they are best for small rooms. The cost of running an electric heater over winter can vary by more than $300 between models, depending on the brand, size and design.
| Characteristics | Values |
|---|---|
| Running cost | The running cost of an oil column heater can be calculated by multiplying the input requirement by the energy usage rate. |
| Electricity usage | Oil column heaters use about 1500 watts of power, costing about 55 cents per hour. |
| Affordability | Oil-filled column heaters are generally the cheapest type of electric portable heater to run. However, they are not as affordable as running a reverse cycle air conditioner. |
| Energy efficiency | Oil column heaters are more energy-efficient than exposed element heaters as the energy generated goes straight into the oil instead of being radiated and lost around the room. |
| Safety | Oil column heaters are safer to touch than other types of electric heaters as their surfaces do not get as hot. |
| Portability | Oil column heaters are portable and come in various sizes and styles. Many are pre-assembled, or have a handle, cord storage, and castor wheels to help with movement. |
| Heat distribution | Some column heaters distribute heat unevenly due to the lack of a fan. However, brands are starting to add this feature to their latest models. |
| Size | While technically portable, column heaters can be bulky and weigh around 7kg. |
| Cost | Oil column heaters cost between $30 and $230 depending on the size, features, and brand. Entry-level heaters cost between $30 and $100, while premium models cost $150 or more. |
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What You'll Learn
Oil column heaters are generally the cheapest electric heaters to run
Electric heaters can be expensive to run during the colder months, adding between $122 and $247 to energy costs depending on the type of heater. Oil column heaters are generally the cheapest electric heaters to run. They are filled with thermodynamic oil that is heated up, which in turn heats the room via air convection and thermal radiation.
Oil heaters generally use less power than other electric heaters, consuming around 1.8kWh of electricity per hour, which is less than radiant, fan, panel, or convection heaters. While oil heaters are not necessarily cheap to run, they are more cost-effective than other electric heater types, such as panel or radiant bar heaters. On average, using an oil heater for three hours per day in winter will add an extra $122 to $212 to your power bill, depending on your location.
Oil heaters are ideal for long-term heating as they retain heat even after being switched off. They are also safer than other heaters as the heating element is sealed inside, reducing the risk of fires. They are also safer to touch as their surface does not get hot enough to burn someone.
Oil column heaters are available in various sizes and styles, with prices ranging from $30 for entry-level heaters to over $150 for premium models.
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They are slower to heat a room than gas heaters
Electric column heaters are slower to heat a room than gas heaters. Gas heaters have two types: convection and radiant convection. Convection gas heaters draw in cold air and heat it via a gas-powered element that is then released back into the room. Radiant convection heaters have an element that is slightly exposed, providing more focused heating. On the other hand, electric heaters, including column heaters, work similarly to gas heaters, drawing in cold air, heating it via an element, and dispersing it back into the room. However, electric heaters can be slower to heat a room than gas heaters due to the nature of the heating process.
Electric column heaters, also known as oil-filled column heaters, use electricity to heat oil inside the columns, which then slowly heats the room through air convection and thermal radiation. While the oil in the columns takes time to heat up, once it does, it retains the heat for longer, making it more efficient for long-term heating. This is because the oil acts as a heat sink, allowing the heater to consume less electricity over time compared to exposed element heaters.
The speed of heating a room depends on various factors, including the heater type, the heated area, and energy efficiency. Gas heaters are generally faster at heating a room than electric heaters, but electric heaters have their advantages. Electric heaters are highly portable, and some models have adjustable settings, timers, thermostats, and other controls to customise the heating. Additionally, electric heaters are safer to touch as their surfaces are less likely to reach extremely high temperatures.
To optimise the heating speed and efficiency of electric column heaters, it is recommended to use them in smaller rooms. They are ideal for bedrooms, studies, or small living areas. Additionally, choosing a model with a fan can help distribute heat more evenly throughout the room.
While electric column heaters may be slower to heat a room than gas heaters, they offer a convenient, cost-effective, and relatively safe option for long-term heating, especially in smaller spaces.
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They are safer than other heaters as their surface doesn't get as hot
Electric column heaters are safer than other heaters as their surface doesn't get as hot, making them a safer option for homes with children or pets.
The surface temperature of electric column heaters remains relatively low compared to other types of heaters, such as radiators or gas heaters. This means that even when the heater is on and emitting warmth into the room, the exterior surface can be touched without causing harm or injury. This is an important safety feature, especially in households with young children or curious pets who may accidentally come into contact with the heater.
The relatively low surface temperature of electric column heaters also reduces the risk of fires or burns. Unlike heaters with exposed heating elements, electric column heaters do not reach temperatures high enough to ignite nearby objects or cause serious burns if touched. This makes them a much safer option, particularly for extended use or in unsupervised areas.
Additionally, the design of electric column heaters contributes to their safety. These heaters typically have a sleek, enclosed structure, which not only makes them aesthetically pleasing but also prevents direct access to the heating elements. This design ensures that only the exterior surface of the heater becomes warm, providing a barrier that reduces the risk of direct contact with the heat source.
The safety features of electric column heaters make them a reliable and worry-free choice for homeowners and families. Their low surface temperature and enclosed design significantly reduce the potential hazards associated with heating appliances, allowing users to enjoy a warm and comfortable environment without compromising safety.
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They are portable, but can be bulky
Electric column heaters are portable and come in various sizes and styles. Many are pre-assembled, or at least have a handle, cord storage and castor wheels to help you easily move them around the house. However, they can be bulky, weighing around 7kg and sometimes spread out with more than five fins.
While they are portable, electric column heaters are not the most lightweight or compact option for those who need to move them frequently or store them in small spaces. If you are looking for a heater that is easy to transport and store, you may want to consider a different type of heater or look for a more compact model.
That being said, electric column heaters offer a convenient and cost-effective way to heat any room in your home. They are a good choice for those who want the flexibility to move their heater from room to room, as they are generally safe and easy to operate.
The cost of running an electric heater can vary depending on the brand, size, design, and energy efficiency of the heater. It is important to consider these factors when purchasing an electric column heater to ensure that you are getting a model that suits your needs and budget.
Additionally, there are ways to reduce the energy consumption of your heater and save money on your energy bills. For example, regular cleaning of your heater can improve energy efficiency and lower running costs. Sealing draughts and keeping windows securely fastened can also help to reduce heat loss and lower your energy usage.
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They are more energy-efficient than exposed element heaters
Electric column heaters are more energy-efficient than exposed element heaters due to several key design features. Firstly, they utilise a process called 'convection heating', which involves drawing in cold air from the bottom of the heater, warming it as it passes over the heating element, and then gently releasing the heated air from the top of the unit. This natural convection process creates a gentle flow of warm air that efficiently warms the room without the need for a fan, making it a quiet and cost-effective heating option.
Secondly, electric column heaters often feature a thermostat, allowing you to set your desired temperature. Once the room reaches the set temperature, the heater will automatically turn off, preventing unnecessary energy consumption and helping to
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Frequently asked questions
Electric column heaters can be expensive to run, but they are generally cheaper than other types of electric heaters. Oil column heaters are a convenient and cost-effective way to heat any room in your home. They are also safer to touch as their surfaces are unlikely to get as hot as other types of electric heaters.
Oil column heaters use electricity to heat oil contained inside columns or fins, which then warms the room via air convection and thermal radiation. The oil acts as a heat reservoir, storing and releasing energy over time. This means that the room can stay warm even after the electricity is turned off.
Most oil column heaters use around 1500 watts of power, costing about 55 cents per hour. However, some models have a low energy setting, ranging from 700 to 800 watts.
To calculate the running cost, you need to know the input or capacity requirement of your heater and your energy usage rate. You can find this information on your energy bill or by checking your retailer's energy price fact sheet. Then, simply multiply the input requirement by your energy usage rate.
