We just have 2 halogen down lights in our house, but I would like to use them more often that we do.
I bought a few and replaced them. They work well for lighting up the stairs. The light is more blue than the halogens but OK for here.
I tried some at a friends place with electronic transformers and they don't work. The transformers probably detect no load and shut down.
So, How much can I save?
The test voltage was 13.65v
LED Current 0.31A
Halogen Current 4.2A
At 240v with say 90% efficient transformer this equates to:
LED: 4.65W ~ 20mA @ 240V
Halogen: 63W ~ .263A @ 240V
At 30c/kWh this amounts to:
LED ~0.014 cents per hour
Halogen ~ 0.19 cents per hour
Difference is .176 cents per hour. At a cost of 9$, payback is in 5113 hours or 213 days.
This might not seem much, but the lighting energy is now 7% of what is was. I call this significant.
Before:
One of each:
After with LEDs.
3 comments:
You should also factor in the cost of replacing the halogen bulbs, I have to replace at least one bulb every few months at my place and @ $2-3 for a standard one it makes sense to replace it with LEDs.
makes no sense with those blue light...
and if you run your light 24hrs a day you have another problem, halogen lights are just ok for now.
just think like 3-4hrs runtime average and how long the leds should last ^^
do you know why many people replace halogen bulbs with led?
Because theres no heat with led and risk of fire is lower...
Hi, got all my 90+ downlights on LEDS. first round 3W from Shenzhen. Had several fail. At $10 a kit no problem. Now moving to 230V / 5W ones that don't need a xformer. Most work well and overall we get a good deal as saves heaps. Light colour is good. Power bill has come down a lot...
so LED is here and working.
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