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It's only wasteful, and costing you money,if you are not using the room in which the lights are left on.
Quote from: Paul. on 16/01/2009 23:28:18It's only wasteful, and costing you money,if you are not using the room in which the lights are left on.Why is it more wasteful if I am not in the room? I understand that turning down the thermostat is money- and eco-wise if you are not in the room, but if the room heat is regulated by a thermostat the amount of electricity used (by the heater or by the light bulbs) is not dependent on my presence, is it not? Could you elaborate please?
It wastes energy by generating light, when you want to have heat. If you're not there to observe the light, that's a waste.
The saving from changing to CFLs is far greater than from any possible saving on you heating bill by keep old fashioned bulbs. You might say over ten quid a year for each 60 Watt bulb replaced.
The saving from changing to CFLs is far greater than from any possible saving on you heating bill by keep old fashioned bulbs.
That said, the energy use of domestic lighting, while something like 15% of electricity use, still only amounts to around 1% of national CO2 emissions, so all this legislation and fuss is still basically just fiddling while Rome burns.Anyone would save as much CO2 by driving a car a dozen less miles per week as they would changing the bulbs in their house to ghastly low-energy ones (Yep, I don't like 'em!).Turning thermostats down by a degree or so, or just heating fewer rooms or for fewer hours per day would save far more CO2 than swapping a few bulbs.