Propane heaters produce combustion gases and you need ventilation to carry these gases away. Ventilation is also important to prevent carbon monoxide poisoning from happening in the space you are heating.
The amount of ventilation you need depends on the type of propane heater and where you are using it. For example, you will need more ventilation if you have a vented propane garage heater than if you have a ventless propane heater. Vented propane heaters have a special vent that carries the combustion gases out of the garage and into the outdoors. They should be placed on a flat surface that is not covered by combustible materials, and they should face an open window.
If you are using a portable ventless propane heater, it is essential that you keep the door or the window open while you are heating your garage. This is because if the vent or the door is closed, the carbon monoxide produced by the heater will not be able to escape from the space. This will lead to carbon monoxide poisoning and you could end up with serious health problems.
Regardless of whether you are using a vented or unvented propane heater, it is crucial that you follow all the safety tips explained in the manufacturer’s manual book. Always watch the flame while it is on, and turn off a propane heater if it smells gassy or starts to look yellow. These signs mean that the heater is not burning properly and that it is producing dangerous carbon monoxide. It is also recommended that you install a carbon monoxide detector and change the batteries regularly.