Dimmers work FAR better with LEDs than they do with Incandescents.Does anyone know how much if any money is saved with an LED dimmed to 50% or so? I only have one fixture that is dimmable and that's a ceiling fan with a light kit which has two 40 watt equivalent LED's in it. We keep it dimmed most of the time and it's on 24/7.
If you Dim your LED by 50%, I will use my particular can light LEDS as a reference which is the equivalent of a 75W Incandescent which uses at full brightness 13W of electricity.
That LED dimmed to 50% would be using approx 5W, it is roughly 10% MORE than what the percentage of dimming is so the LED is even more efficient dimmed, whereas the Incandescent get LESS efficient when dimmed.
However on an incandescent that is dimmed 50% you are still using approx 51W of electricity so only about a 30% savings in wattage but a 50% dimming in output.
Dim that same LED to just 20% output and you are using about 2W of electricity whereas the Incandescent at 20% is still using 34W of electricity.
Just guessing, but mostly likely your 40W equivalent LED is probably using 6W at full brightness, thus approx 3W EACH at 50% thus you are most likely using somewhere around 6W total at 50%
As a comparison your average small incandescent night light uses 7W
Average cost savings for you dimming your 2 LEDs from 12W down to 6W is this if you pay roughly .10cents per KWh.
at 12W that would be about $10.51 per YEAR burning 24/7/365
at 6W it would be about $5.26 per year so about .44cents per month savings.
BUT Vs an Incandescent dimmed to 50% with two bulbs which would still be using 102W would cost about $89.35 per year vs $5.26 or a savings of about $84 per year $7 per month for just that one fixture LED vs Incandescent.
PLUS the heat savings which translates to AC use savings to boot.