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Air Conditioning - Typical Running Costs - Information provided by CoolCo Ltd

Comparative Running Costs Air Conditioning Unit Supplier Charges Cost in Real Terms
Gas Combi Boiler (Radiators) 4.82p / Unit 7.415p / KWH
Electric Heating (Convector/Oil Filled etc.) 5.638p / KWH 5.638p / KWH
Solid Fuel (Back Boiler) 11.00 / 50KG 5.28 / KWH
Bottled Gas Room Heater 18.20 / 15 KG 14.80 / KWH

Heating Type Weekly Cost Average Cost: October - April
Solid Fuel (Back Bolier) 10.34 289.52
Electric Heating (Convector/Oil Filled etc.) 11.25 315.00
Gas Combi Boiler (Radiators) 14.52 406.56
Bottled Gas Room Heater 28.98 811.44
Cool Co Air Conditioning Unit 3.15 157.86


Figures are based upon a Traditional Conservatory of Typical Construction measuring 3M x 4M with a Victorian style roof and which requires 12000 Btu's / 3.5 KW of duty to comfortably heat / cool the room.

These comparisons have been compiled based upon the information provided by the UK Building Research Establishment and CMJ Sutherland Associates.

Prices are correct as of 02 February 2001 including Gas surcharges.

Fuel Efficiencies

Gas 50% Cooling
Gas 65% Heating
Oil 65% Heating
Solid Fuel 55% Heating
Electricity 90% Heating
Electricity 280% Cooling
Electricity 300+% Heating

COOL CO Air Conditioning units produce more energy than they use:

CoolCo Air Conditioning is safer and more efficient than other forms of heating for the Conservatory.

CoolCo Air Conditioning units are extremely efficient to run. They use approximately one third of the electricity used by a 3KW electric fan heater. They are safe because unlike other heaters they are permanent installations and do not generate heat great enough to burn.


The units are so efficient because unlike other forms of heating the heat generated by our units is done from the refrigeration process and not by an electric heating element. The electricity used by our units powers the compressor and the fans creating a flow of warm air from within the unit. Because there is no heating element the units do not get hot and therefore safer to use.


Do you know how warm air comes out the back of your fridge?, it's because the compressor compresses the refrigerant gas which gives off heat ready for it to flow round the system where it will expand giving off cool air (i.e. refrigeration).

With air conditioning heating it's simply the refrigeration process being reversed, so that the warm air comes out inside the conservatory and the cold air goes outside.

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