* Carbon monoxide poisoning: Natural gas heaters produce carbon monoxide, a poisonous gas that can be fatal. It's important to ensure your garage is properly ventilated to prevent carbon monoxide from building up.
* Fire risk: Natural gas heaters can also pose a fire risk if they're not installed or maintained properly. Make sure the heater is installed by a qualified professional, and follow the manufacturer's instructions for maintenance.
* Burns: The surfaces of natural gas heaters can get very hot, which can pose a burn risk. Be careful not to touch the heater while it's in operation, and keep children and pets away from the heater.
If you're considering installing a natural gas garage heater, it's important to weigh the risks and benefits and take precautions to ensure safe use.