When it comes to safe indoor propane heating, choosing the best brands and models is crucial. Some of the top-rated brands include Mr. Heater, Dyna-Glo, and Martin. These brands offer indoor-rated propane heaters with important safety features such as oxygen depletion sensors (ODS) and automatic shut-off mechanisms in case of flame failure or low oxygen levels. It's important to also consider ventilation requirements and carbon monoxide detection when using propane heaters indoors. Proper ventilation is necessary to avoid carbon monoxide poisoning, and a battery-operated CO detector is recommended for added safety. With the right precautions and safety features, propane heaters can be a safe and effective way to heat your home in emergencies.