
During the winter, homeowners often turn to space heaters to keep their homes warm. However, this can lead to a common problem: dry air. Dry air can cause a variety of issues, from health-related problems like dry eyes and itchy skin to damage to wooden furniture and floorboards. So, what about electric radiator heaters? Do they dry out the air? The answer is no – electric radiator heaters do not dry out the air like other heaters because they transfer heat to objects and surfaces in the room instead of heating the air directly. This means that the air moisture levels remain unaffected.
| Characteristics | Values |
|---|---|
| Do electric radiator heaters dry the air? | No, electric heaters do not dry the air. Non-radiant heaters, such as forced hot air systems, can contribute to drying out the air in a room. |
| How to increase moisture content in the air? | Placing pots of water on shelves, using humidifiers, letting clothes air-dry inside, leaving the door open while showering, and getting some houseplants are all ways to increase moisture content in the air. |
| How to improve indoor air quality? | Maintaining proper ventilation and using whole-house humidifiers can improve indoor air quality. |
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What You'll Learn

Non-radiant heaters can dry out the air in a room
There are several types of non-radiant heaters, including forced hot air systems, convection heaters, and electric heaters. Electric heaters, for example, use heating coils or ceramic elements to release heat directly into the surrounding air. While they are more energy-efficient than balloon-type space heaters, they tend to circulate dry heated air within the room, contributing to the dryness.
To counteract the drying effect of non-radiant heaters, it is important to maintain proper ventilation and use humidification methods. Placing pots of water on shelves, using a humidifier, boiling water for tea or pasta, or air-drying clothes indoors can all help increase moisture content in the air. Additionally, using an infrared heater, which directs heat towards objects rather than circulating air, can minimise the risk of low humidity.
It is worth noting that the construction of modern homes, which are tightly sealed against the elements, can also contribute to indoor air quality issues. Whole-house humidifiers are recommended to improve air quality and make the indoor environment more comfortable and healthier. By increasing humidity, you can set your thermostat to a lower temperature during winter, reducing the workload on your heating system and saving energy.
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Radiant heaters don't dry out the air
The simple answer is no, radiant heaters do not dry out the air. Unlike traditional forced hot air heating systems, radiant heaters like infrared floor, wall, and ceiling heating systems directly convert electrical energy into heat without affecting air moisture levels. They achieve this by transferring warmth to boundaries such as floors, walls, or ceilings, thereby warming up surfaces in the room instead of the air. This is in contrast to traditional heaters, which direct heat towards objects rather than heating the surrounding air directly.
The heater placement and coverage area allow radiant heaters to produce less direct heat while still warming up personal items like furniture and floors. This provides much better energy efficiency when compared with other forms of space heaters while removing the potential for dryness.
Infrared heaters provide effective warmth while maintaining better moisture levels, reducing the need for additional humidification measures. This is especially important because the low humidity levels created by non-radiant heaters can cause respiratory infections such as colds, flu, and allergies, as well as dry eyes, lips, and throat.
To improve indoor air quality, it is recommended to use a humidifier beside an electric or fan heater to counteract the drying effect. Alternatively, using an infrared heater, which directs heat toward objects rather than circulating air, offers a solution that minimises the risk of low humidity.
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Gas heaters don't dry out the air
Electric heaters are known to be more energy-efficient than balloon-type space heaters. However, they tend to create an unpleasantly dry atmosphere by circulating dry heated air within the room. This dry air can cause a variety of issues, including dry skin, eyes, lips, and throat, as well as static shocks and damage to electronics.
In contrast, gas heaters do not dry out the air. They provide a consistent source of heat without depleting a home's humidity levels. However, it is important to consider the potential risks of combustion gas buildup in poorly ventilated spaces when using gas heaters.
To maintain comfortable humidity levels when using electric heaters, there are several options. One solution is to use a whole-house humidifier, which can be installed directly into the ductwork to increase moisture levels throughout the home. Alternatively, placing pots of water on shelves can help increase moisture through natural evaporation, providing an energy-efficient and cost-effective way to add moisture to the air.
Infrared heaters are another option that minimises the risk of low humidity. These heaters operate by directing heat towards objects rather than heating the surrounding air directly, providing warmth without significantly impacting air moisture levels.
By understanding the potential impact of different heating systems on indoor humidity, homeowners can make informed decisions to maintain a comfortable and healthy environment during the cold winter months.
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Whole-house humidifiers can improve air quality
Electric heaters can dry out the air, particularly non-radiant heaters, which heat the air directly. In contrast, radiant heaters like infrared heaters transfer heat to objects and do not affect air moisture levels.
There are two main types of humidifiers: ultrasonic and evaporative. Ultrasonic humidifiers use a vibrating metal plate to create a vacuum that causes water to "explode" into minuscule droplets that are dispersed into the air. Evaporative humidifiers release water vapour, which is the gaseous form of water.
To maintain good air quality, it is important to clean your humidifier regularly. Minerals in tap water can build up as crusty deposits or "scale" in the humidifier, which can breed microorganisms. Therefore, it is recommended to use bottled water labelled "distilled" or water with low mineral content. Empty the tank, wipe all surfaces dry, and refill the water daily. Clean portable humidifiers every three days, removing any scale or deposits that have formed.
In addition to using a humidifier, there are other ways to increase moisture in the air. Placing pots of water on shelves or hanging a clothesline indoors can add humidity through natural evaporation. An aquarium is another way to increase humidity in a centralised location like a bedroom or living room.
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The outdoor air coming into your home can cause dryness
The dry air can be exacerbated by the use of non-radiant heaters, which contribute to drying out the air in a room. When these heaters warm up the air, the relative humidity decreases, leading to a drier feeling and potential health effects such as dry eyes, lips, throat, and skin. It is important to maintain proper ventilation and consider using a humidifier to counteract the drying effect.
The outdoor air coming into your home can also bring in allergens and irritants, which can be exacerbated by the dry air. This can include dust, pollen, and other allergens that can inflame sinuses and irritate airways. For people with asthma, dry air can lead to a narrowing of breathing passages and trigger an attack.
To combat the dryness caused by outdoor air and heaters, there are several options. One option is to use a whole-house humidifier, which can provide moisture to the air supply and improve indoor air quality. Another option is to place pots of water on shelves, which will increase moisture content through natural evaporation. Hanging a clothesline indoors and air-drying clothes can also add humidity to the air.
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Frequently asked questions
Electric heaters work by heating coils or ceramic elements that then release heat directly into the surrounding air. While they are more energy efficient than balloon-type space heaters, they tend to create an unpleasantly dry atmosphere as they continue to circulate dry heated air within the room.
Dry air can cause a range of issues, including heavy condensation, which can lead to problems like mould and rot. It can also cause static shocks, dry skin, lips, and throat, and damage to electronics.
To counteract the drying effect of electric heaters, you can use a humidifier, place pots of water on shelves to increase moisture through natural evaporation, or use an infrared heater, which directs heat towards objects rather than circulating air.










































