Our electrician recommended we replace the 85 50W halogen spotlights in our
ceilings with LEDs. We live in Costa Rica where electricity is expensive
and frequent lightening strikes and power surges blow out bulbs. If
possible we will use 12V LEDs. We will also be adding a whole house surge
protector. Our apartment has recessed CFLs in the ceilings. Would that be
a better option? We have no experience with LED lighting. We would
appreciate your opinions.
I've switched all the MR16 and GU10 bulbs in my house and the vast
majority at the office over to LEDs. I used cheap Chinese units and
have had a higher than expected failure rate (but no worse than when I
first switched over to CFL bulbs - The early ones were a
The savings in electricity using the LEDs over Halogens was more than
duplicated by the reduction in air conditioning costs because they run
SO MUCH COOLER!!!
I have now also replaced virtually all of the CFL PAR floods in the
house with Philips LED replacements - and most of the standard E27
base standard bulbs as well. Spent a bit more on the Philips dimmable
units instead of importing cheaper Chinese stuff off e-bay. (mabee
I've learned a thing or two??)
I'll replace the "special" bulbs like the globes in the bathroom
fixtures, and the chandelier, as decently priced, acceptable
replacements become available.
You should be aware that your halogen bulbs are using nearly as much
electricity as regular incandescent bulbs, and most of the energy they
consume is being wasted as heat.
Fundamentally, the primary difference between a halogen bulb and a
regular incandescent bulb is that halogen bulbs have bromine or iodine
gas in the bulb rather than an inert gas like argon. The halogens
(bromine and iodine) react with the tungsten atoms that come boiling off
the hot filiment and redeposit the tungsten atoms back onto the
filiment, so that halogen bulbs don't darken with age the way regular
incandescent bulbs do. Also, halogen bulbs operate at a much higher
temperature so they use a quartz bulb rather than regular silica glass.
Still, you will realize a substantial electrical savings if you switch
to either compact fluorescent bulbs or LED bulbs. I would consider
compact fluorescent bulbs instead simply because their price is lower
and the price of LED bulbs is still coming down. LED bulbs are supposed
to last very much longer than CFL bulbs, so maybe LED is the way to go
to save more over the long term because you won't be replacing bulbs
nearly as quickly.
I just had my second CFL bulb fail. I can't cite how many hours it had
on it, and maybe it was a defective product....but it's obvious to me
that the cost per hour for those 2 bulbs was hugely higher than any
I'd ask to visit some of his earlier customers, and
see what they think. Maybe you know someone who did
this (work, church, up and down the street) and can
ask. From here, it sounds good.
I'm in NY, USA. I've got some CFL bulbs. The LED bulbs
I have are from China, and not very bright. I use one
for a night light in the bathroom. Tried one over the
kitchen sink, but 2 watts isn't enough to wash dishes.
Right off the bat, two things came to mind. LEDs run very cool.
Halogen runs very hot. Air conditioning may run less. Also LEDs
use very little power. I am gradually replacing our lighting
devices with LEDs. Price is getting better too.
LEDs will definitely save you electricity and if you use AC as suggested
later in this thread, the savings will mount: that's efficiency. The
bigger question is efficacy: how much does electricity cost and how much
will the replacement bulbs cost...do a cost benefit analysis and see if
you get a reasonable payback period
On Mon, 02 Dec 2013 21:20:17 -0800, "Malcom \"Mal\" Reynolds"
If the ones I replaced in the office last 6 months they pay for
themselves in the summer @ $6 each.. (from what I remember) Takes
significantly longer in the winter as the halogens decrease the
heating fuel requirement significantly.
On Tue, 03 Dec 2013 08:36:40 -0500, Stormin Mormon
Yup - but if you are figuring pay-back on an investment in "low
power" bulbs you need to take it into consideration. You are getting
the heat from halogens - whether you need it or not. In the summer it
costs to remove the heat. In the winter you save a bit on heat.
With LEDs there is no heat load to remove, and no heat gain to reduce
heating requirements. Doesn't matter which costs more, because you
are not installing gas lights.
If I were using a heat pump one watt of electricity would produce more
useable heat than the halogen and I wouldn't be adding to my cooling
load in the summer, so unless you live in an area that has more heating
degree days than cooling days by a significant ration, using halogens is
just not really a good move
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