Some of the benefits of natural gas wall heaters include costing less than electric and propane wall heaters, providing heat that's hotter than electric heat and operating more efficiently. Wall heaters are also a good option for residences and buildings that lack the duct work necessary for central heating.
Some general advantages of wall heaters are they are more efficient for heating small areas, offer quick warm-up and they can save on power and heating fuel costs when used to heat a small space while the rest of the area remains at a constant temperature. A gas wall heater is also a good option for areas that don't have access to electric power.
Disadvantages of gas wall heaters include the need for gas lines if none exist at the point of use. There's also a chance that a wall heater can be used beyond its rated capacity, which can result in over-taxing the unit. Using a wall heater beyond its capacity can lead to increased fuel and power costs.
In addition to its placement on a wall, some wall heater models can be positioned from the ceiling or hung from overhead supports. If a wall heater is needed for a large area, a wall furnace can be used to heat a small apartment or building.