Multifuel burner - how much coal

  • Active since 1995, is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.


Feb 3, 2020
G72 8ax
Evening all
Had a multifuel stove for a few years now and I'm wondering whether I'm getting full efficiency

It's a nestor martin harmony 33

I've got a hold of some proper colombian coal!

Supplier said it burns hot so don't put too much in, so I only maybe put in 5 or 6 lumps at a time
Should I really be filling it though up to the grate height?

I've got a thermometer, IR and flue pipe hits about 250deg celsius, max which I believe is the highest advised for efficiency, so I'm doing it right then and using enough?

Thank you