The Danger & Cost Of Halogen Downlights.
How LED Lamps Help Your Solar System

By installing LED’s you not only save money on the running costs per year as demonstrated, it means you also feed more power into the grid (if you have a solar system) which generates you more credits during the day. Yet another bonus of making the change to LED’s.

Are you aware about the danger of halogen downlights due to the heat generated by the lamp while operating?

This is just one issue with halogen lamps. The second issue is they cost up to 88% more to run than L.E.D. lamps and I’m going to prove it below.

Lets begin with halogen lamps.
Build Up Of Flammable Debris…

As you can see by the pictures to the left (click to enlarge) a build up of flammable debris on and around the halogen bulb is common and it’s this debris that can potentially catch fire. There have been many reported cases in the media of this very thing happening. If your downlights have been installed correctly the chance of ignition is less however the possibility is still there because there’s no way of preventing loose debris being blown around in your roof space and landing on top of the bulbs.

High Bulb Temperatures…

The other thing you need to understand is that the surface temperature of a 50 Watt halogen bulb can be in excess of 200 degrees Celsius and that’s on a normal day. When operating in extreme outside hot conditions as we experience during summer, the temperature can be even higher. This is the very reason that very fine and lose debris built up ignites and then fire can spread through your roof.

Burnt Plug Connections…

You’ve probably experienced at some stage where you’ve needed to replace a halogen bulb either because it’s blown the bulb filament itself, or even more commonly, the intense heat has caused deterioration and consequent arcing across the terminals resulting in a loose (or no) connection from the two pronged plug that connects the transformer to the bulb. In the picture to the left, you can see the darker area of the GU10 plug demonstrating that the terminals inside the plug have been effected by heat and failed.

The above three reasons are enough for you to seriously consider changing your halogen lamps to LED lamps. Next I’m going to show you and explain the economical differences between the 2 types of lamps by comparing halogen to LED electrically.

Actual example in my own home…

Firstly the money savings.

I replaced 5 halogen lamps in my hallway, which consumed 50 watts each when running. You can add another 10 watts (approximately) because the transformer running the lamps also consumes energy. However because I used the same transformer, I’m excluding the transformers in the following calculations.

The Numbers Used…
In this “real” savings example, I have used the same numbers (except for the lamp wattages) and based the comparison over a full year (365 days).
Lamp wattage (halogen) = 50W (actual)
Lamp wattage (LED) = 6W (actual)
Number of lamps running = 5 (actual)
Hours per day running = 4 (estimated)
Average kilowatt peak hour rate $0.38 cents per kilowatt hour (actual – taken off my last power bill)

Number of days running = 365 days per year

The Equation…

Wattage of lamps X number of lamps X running hours per day X kilowatt hour rate X number of days running = total cost per year.

50W Halogen Lamps Cost…
50 x 5 x 4 x 0.38 cents per KwHr = 380 cents per every 4 hour session (ie: $3.80 per 4 hour session)

Multiply $3.80 X 365 days per year = $1,387.00 per year to run only 5 halogen lamps per year for 4 hours per day.

MR16 6W LED Lamps Cost…
6 X 5 X 4 X 0.38 cents per KwHr = 45.6 cents per day per every 4 hour session (ie: $0.456 per 4 hour session)

Multiply $0.456 X 365 days per year = $166.44 per year to run the same 5 lamps per year for 4 hours per day.

That’s a massive saving of $1220.56 per year on your power bill which is an 88% reduction!  And that’s just on 5 lamps! Obviously the more lamps you have and the longer they run per day will save you even more money per year.

Higher Light Output…

The pictures to the left comparing the light level of the 6W LED lamps operating in my hallway don’t really tell the full story as far as brightness goes. However we’ve gained around 15-20% more light (they are significantly brighter) than the old 50W halogen lamps.

Much Lower Heat…

The other huge benefit is a safety one and is the dramatic reduction in heat generation from the LED’s. As an electrician, I’m no longer concerned about running the lights for long periods of time because I know they won’t ignite any debris which may have settled on them.

Fast Return On investment (R.O.I.)…

Based purely on the numbers above, the payback period on changing to LED lamps is very short. If you look at the bulk pricing packs we sell in our online store you’ll see what I mean. If you own a business or work in an office which are environments that generally have many halogen downlights, you could literally save thousands of dollars per year in lighting costs. We even install the lamps for you (additional cost) if you want.

Install Yourself – No Electrician Required!

Because you’re not actually working with high voltage (240V) and it’s only a 12V plug, you can easily install the LED lamps yourself. Below is a video showing just how easy it is to change the lamps over. However if you want we can install them for you (only in Adelaide at additional cost).

Longer Lamp Life…

The average life expectancy of halogen lamps has been quoted between 950 and 1250 hours depending on the installation conditions. Whereas the LED lamps we sell are quoted to have a life span of between 35,000-40,000 hours. The reason the halogen lamp’s life is less is because of the aforementioned high temperatures and the effect this has on the filament’s life. LED’s operate in a much cooler environment so heat damage isn’t an issue.

 LED’s Vs CFL’s (Compact Fluorescent Lamps)…

CFL’s are another good alternative to halogen downlights however it generally means you have to change the whole fitting which can be expensive and you’ll need to pay an electrician to install them. CFL’s range from around 9 watts per lamp up to 40 watts and their wattage dictates the actual size of the lamp as well. Whereas with LED lamps, there is no size difference between the 6 and 7 watt lamps

I hope this information helps you understand the difference between halogen and LED lamps and if you want to buy some LED lamps we have very competitive pricing and they will be delivered to your door. Simply click on the button below for pricing.

Please leave any comments or questions below and I’ll be happy to help you.

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