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The Consumers Guide to Buying Portable Heaters

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 How Much Bang For Your Buck

Comparative fuel heating costs per kWh
 
 

Fuel

Unit

kWh Heat output per unit

Average Cost per kWh(Oct 2018)

Electricity 1kW 1 16.3p( inc VAT & standing charge)
Mains Gas
1m3 (0.717grams)
10.55 6p (inc VAT & standing charge)
Butane  (Calor gas blue bottle)
1kg
20
20p (based on 15kg bottle)
Propane (Calor Gas red or green bottles)
1kg
14
17p (based on 13kg bottle)
Bulk LPG
1kg
14
6p
Domestic Heating oil (kerosene / Paraffin oil)
1 litre
10.35
5.6p
Domestic coal
1kg
8.34
4.5p.
Anthracite (Nuts) 1kg 9.2 6p
Coke 1Kg 9.3 6.3p
Peat (Briquettes) 1kg 5 13p
Kiln dried hardwood
1kg 5 2.5p (kiln dried <15% moisture)

How much actual heat you will get depends on the efficiency of your heating appliance.

 Efficency is the percentage (%) of energy used that is transformed into heat. Traditional gas and wood fires use some energy in producing waste gases and water, with flued systems some heat will escape up the flue instead of being used to warm the room.

Electric heaters and catalytic gas fires are nearly 100% efficient so every pounds worth of energy gives you a pounds worth of heat.

Older gas fires can be as little as 40% efficient meaning that every pound you spend 60p is wasted with only 40p  being used for heat.

 Modern gas and wood fires should be giving better than  80% efficiency.

May 20, 2022 Larry Snow

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