# Would like to know the wattage oiutput on my vulcan duel fuel oil heater

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I think the question asker wants to know the heat output of the heater measured in Watts so as to get a handle on it by comparing it with an electric heater they may have. Rated HEAT output may be quoted in Btu's (British thermal units), Mj (mega joules) or kW kilowatts (1000 watts) I recently help my brother install a vulcan oil heater which had a maximum output rating of 40,000 Btu.  3,412 Btu's = 1kW so therefore the rated output = 40,000/3412=11.723 kW You need to be careful when calculating  outputs of gas heaters as  these usually quote the maximum value of consumption (in MJ) 3.6Mj =1 kW  A domestic gas heater rated at 36Mj input does not have a heat output (into your room) of 36/3.6 = 10 kW as the efficiency of fuel conversion can vary from as low as around 45-90% subsequently the heat output can be as low as 36/3.6*.45 = 4.5kW or as high as 36/3.6*0.9=9kW in the case of a flueless portable heater which you would not be wise to intall inside due to the nasty gases produced and the fact that a litre of water is also put into the room for each litre of gas burnt.

Posted on Mar 07, 2009

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¿ Oil heaters do not generate wattage. On the name plate for the unit it may give you an AMP draw. Multiply Amps times Volts to get wattage use when in operation.

Posted on May 01, 2008

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Posted on Jan 02, 2017

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