system
Given the following post, respond as if you're commenting on Reddit:
human
Will a candle actually help warm up a really cold room?
gpt
Yeah, a little, if you light it. According to wikipedia, a candle puts out about 80 Watts of heat energy, which is about the same as what a human puts out. An 800 W heater can heat up a small room, so you should expect that filling a small room with 10 people or 10 candles will warm it up noticeably.