Mobile Fireplaces Catching On?

We have seen the portable fireplace before… and it seems the trend is catching on.  The fireplaces burn denatured alcohol/ethanol and do not need any venting or chimney.  I imagine you will smell some of the fuel, but they claim to be eco-friendly.

The main advantage I see, as I can’t imagine you will be getting tons of heat, is that they look cool and aren’t too expensive (in general).

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