LED Case Studies
Maintenance Cost
LED lighting products require less maintenance than conventional lamps due to there extra long life
Comparison 1
50w low voltage downlight with a life expectancy of around 3,000 hour life to failure over a period 50,000 hours this lamp would need to be changed around 16 times.
Lamp cost x16………………………………..$ 80.00
Transformer replacement x1 ………...….….$ 9.00
Labour and service call cost x16………….. $ 1104.00
(based on $35.00 service call and ½ hour on site @ $34.00)
TOTAL MAINTENANCE COST $ 1193.00 + GST
9w LED downlight fitting with a life expectancy of around 50,000 hour life to 70% of its light output would not even need to be changed at this point unless light levels are critical.
Lamp cost …………………………..……... $ 0.00
Starter cost …………………………..……..$ 0.00
ballast replacement …………….……....….$ 0.00
Labour and service call cost ……….......…$ 0.00
TOTAL MAINTENANCE COST. $ 0.00
Comparison 2
36W T8 LAMP with a life expectancy of around 16,000 hour life to failure over a period 50,000 hours this lamp would need to be changed around 3 times.
Lamp cost x3………………………………..$ 15.00
Starter cost x3………………………….......$ 3.00
ballast replacement x1………………….....$ 12.00
Labour and service call cost x3………...…$ 207.00
(based on $35.00 service call and ½ hour on site @ $34.00)
TOTAL MAINTENANCE COST $ 237.00 + GST
15W T8 LED with a life expectancy of around 50,000 hour life to 70% of its light output would not even need to be changed at this point unless light levels are critical. LED Fluro lamps have Less wiring no ballast and no starter so there is less that can go wrong.
Lamp cost …………………………..……... $ 0.00
Starter cost …………………………..…......$ 0.00
ballast replacement …………………...…...$ 0.00
Labour and service call cost ……….…..…$ 0.00
TOTAL MAINTENANCE COST. $ 0.00
Power Consumption
Comparison 1
Running cost comparison for 50W Halogen downlight and 9W LED downlight
1x 50w HALOGEN DOWNLIGHT running for 10 hours per day At 19 cents per Kw/h
Cost = 9.5 cents per day Per year cost (based on 5 days per week) = $24.79 per year.
1x 9w LED DOWNLIGHT for 10 hours per day At 19 cents per Kw/h
Cost = 1.71 cents per day Per year cost (based on 5 days per week) = $4.46 per year.
SAVING = $20.33 per year per lamp
Comparison 2
RUNNING COST COMPARISON FOR 36W FLUROESCENT TUBE AND 18W LED FLUROESCENT TUBE
Running cost comparison for 36W Fluroescent tube and 18W LED Fluroescent tube
36w Fluroescent lamp running for 10 hours per day At 19 cents per Kw/h
Cost = 6.84 cents per day Per year cost (based on 5 days per week) = $17.78 per year
15w LED fluro lamp for 10 hours per dayAt 19 cents per Kw/h cost = 2.85 cents per day Per year
Cost (based on 5 days per week) = $7.41 per year