Gas wall heaters are gas-powered heating devices that are mounted onto walls in commercial, industrial or residential properties. Gas wall heaters are generally considered to be a cost-effective alternative to using central heating systems, and are ideal in situations where only small areas of a property need to be heated. They work on the same principle as other gas heaters, using a flame to heat the air and then spreading the heat by way of convection.
Vented Gas Wall Heaters
There are two main types of gas wall heaters: vented and ventless. Vented gas wall heaters operate by drawing in air from within the room in which they are fitted and then venting the waste gas products outside. In order to do this, a flue or chimney must be connected to the gas wall heater. If the property is not fitted with a chimney or flue then one must be constructed in order for this type of gas wall heater to be used. The main benefit of this type of system is that there is no risk of polluting the air in the room as all the waste gas by-products are safely and efficiently transferred outside away from the room. The main disadvantage of this type of system, other than requiring the presence of a flue, is that some heat is lost out of the flue, making it slightly less efficient than the ventless variety.
Ventless Gas Wall Heaters
Ventless gas wall heaters have the advantage of requiring no flue or chimney in order to function. They take in no air from the outside and work at a high degree of efficiency, with some models functioning at 99% efficiency consistently. While the range of applications is greater due to not requiring a chimney, they do have disadvantages when compared to vented gas wall heaters. As there is no vent, the by-products created by the heater are free to contaminate the air of the room in which the heater is fitted, which can be damaging to one’s health. They also create relatively substantial amounts of water vapour, which can lead to mould forming in areas that become damp from the by-products emitted. While most recent ventless gas wall heaters are fitted with a sensor that alerts the user if the oxygen in a room falls below a safe level due to the amount of waste gas emitted by the heater, vented gas wall heaters are still recommended as the safer option where possible.
Gas Wall Heaters Features
Many modern gas wall heaters are fitted with flame failure devices that cut off the gas supply should the flame be extinguished for any reason, which is an appealing safety feature for both home and business users. Most models have manual controls that allow different heat settings to be chosen, and are available in a wide range of finishes to match the aesthetics of rooms in which the wall mounted gas heaters are to be fitted. Large models are available for commercial and industrial applications, such as for heating schools or large office spaces.