It must be noted over and over again.....beer is a major source of carbon dioxide. All the gas that fizzes the beer is emitted to the atmosphere directly or after passing through the drinker.
To save the planet, beer ( and coke) must be banned. The heater emissions are trivial nonsense in comparison to the beer.
I REALLY want to discover a 'greenhouse-related' objection to things like Tofu, wheatgrass, kelp (as a human food item), quiche, meat-substitutes and nonalcoholic beer. Bans on those sorts of things are bans that I would be delighted to support :-)