Really liked the mod, looks nice and functions exactly as expected.
What I'd like to see is the pollution dialed back a bit, it's literally 10 times more pollution for a double furnace than a regular electric one.
Good work so far!
edit: When hovered over the double furnace shows 3.6 pollution and a electric furnace shows 0.36 pollution.
edit 2: I was mistaken, the electric furnace had efficiency module 1 x 2, it's actually 0.9 pollution vs 3.6 pollution, still a bit of a gap though.
edit 3: I've found the place in the source code where i can tweak the pollution levels myself, in case someone else wants to know i'll just post what you should find and replace in the document "entity.lua" in your factorio mods folder.
Find " emissions = 0.012" and replace with "emissions = 0.006", this will make a double furnace emit twice that of a regular electric oven.