Running Cost Comparison
ecowarmth - electrical storage heating with a difference
effective – economical – affordable
Below shows comparison running costs between ecowarmth radiators and night storage heaters for a typical living room of 22 m2 (approx 12 ft x 18 ft) with ceiling height 2.40m (8ft)
In both cases reasonable insolation and double glazed windows is assumed.
Night Storage Heating
Kw required: 3.4 Kw* + 2 Kw*extra electrical heating for evening (electric fire)
(* As recommended by DIMPLEX in their Heating Guide)
Tariff SWEB (EDF) Economy 7
Band B = 4.29p per kWh
Band C = 11.42p per kWh
Calculation
3.4 Kw x 7 hrs x £0.0429/Kwh = £1.02 per day
+
2 Kw x 2 hrs x £0.1142/Kwh = £0.46 per day (equates to 4 hrs x 1 Kw)
Total: £1.48 per day
Ecowarmth Heating System
Kw required: 2.0 Kw
Tariff: SWEB (EDF) Standard
Band B = 10.16p per kWh
Calculation
2 Kw x 24 hrs x £0.1016/Kwh x 25% * x 60 %* = £0.73 per day
(= 36.5 p per Kw per day)
Total: £0.73 per day
* equates to 15 minutes of electricity usage for each hour of heat required
** ecowarmth heaters provide 20ºC heat inside even at -5ºC outside. With average winter temperatures of +5ºC, this means ecowarmth radiators work on average at 60% of full capacity
Difference in running costs £1.48 - £0.73 = £0.75
This represents a 50% saving compared to night storage heating + extra heating for evenings
Remember:
With Ecowarmth radiators you have a large choice of sizes of radiators and power ratings to suit.
With night storage heating your choice of size and power rating is very limited!
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