Brighten your future with LED Landscape Lighting Sean Mullarkey, Applied Water Technologies What's the big deal with LED lights, how can they save your customer money, what are their short comings, how can they add a new profit center for your business. Find out the latest on this cutting edge technology. LED landscape lighting FAQ's and benefits. Presented by Sean Mullarkey TriState Water Works, Cincinnati Ohio

1. Sean Mullarkey, Applied Water Technologies, Inc.
Sean@TriStateWaterWorks.com
Cell 513-379-5780

2. • What are the benefits of LED lighting
• What is an LED (light emitting diode)
• What are the short comings of LED
• Design considerations for LED
• Cost comparisons of LED and incandescent
lighting

3. By Using LED Landscape Lighting, You Are Doing
Your Part To Go Green!
Fewer fossil fuels are used in the manufacturing of LED’s than in
incandescent lamps.

4. • Energy $$$$ savings
– Uses 1/3 of the energy per lumen compared to
incandescent lamps
• Maintenance $$$$ savings
– No bulbs to be replaced

5. • Installation cost of the following items is lower
– Wire - smaller size and less wire
– Power console – fewer transformers and smaller
transformers
– Labor – less labor designing system wire schemas and
less labor to install because of simplified wiring
• Disclaimer – The fixtures are generally more expensive than
your typical landscape lighting fixture.

6. • Easier to train your crews on installation
techniques
• You will have happier customers
• You will earn more profits and have a better
reputation, less call backs

7. • Bulbs, Lamps, Arc lamp, Beacon, Candle,
Flame, Flare, Illuminator, Lantern, Taper,
Torch, etc. What ever you call a Light Bulb
LED’s don’t have them!
• LED life expectancy is 40,000 hrs. or 18 years
at 6 hours on per night

8. • L – light
• E – emitting
• D – diode

10. • Brief history of the LED
– 1962 First practical LED (Holonyak, GE) 0.001 lumens
– 1960’s Red indicator LEDs
– 1970’s 7-segment displays
– 1980’s Green LEDs
– 1990’s “High brightness” blue (Nakamura, Nichia) 1 lumen
– 2000’s Illumination LEDs 100+ lumens
100,000 times brighter than 1962

11. • Solid State Lighting or SSL
– semiconductor die or chip
– organically grown crystals
– “LED” – packaged device

12. light emitted forward
Heat Must be conducted away from LED!

13. • Illumination LED’s in the raw produce a blue
light
• White light is produced by coating the LED
with phosphors of a yellow tone to produce a
white light
• White light can also be produced using RGB
mixing, expensive and complicated

14. Cosmic Gamma X-Rays UV IR Micro TV Radio
Rays Rays Waves
400nm 500nm 600nm 700nm

15. An LED directly converts electricity into light.
Apply a forward voltage Vf and current (mA)
flows from p to n…

16. • Are they pitfalls or just new parameters?
• New parameters mean CHANGE
• Change tends to freak people out!

17. • Number one Pitfall - The diode does not like
high temperatures, end of story.

19. • High initial price: LEDs are currently more
expensive, price per lumen, on an initial
capital cost basis, than most conventional
lighting technologies.
35w MR16 Accent Light $84.00 MR16 35w bulb $5.00
8.5W LED Accent Light $182.50 LED Retro Lamp $37.00
LED MR16 LED MR16

20. • Ridged in post installation modifications
Foot Candles Beam Width

21. • High rate of malfunctions in outdoor fixtures.
• A lot of manufacturers make bold claims that
their bulbs last 50,000 hours yet will only
warranty them for 1-2 years.
• The color rendering of LED bulbs in a landscape
setting can be less than desirable.
• Initial overall cost to retrofit is high vs. potential
savings. (this gap is narrowing quickly and may be
non relevant already)

24. • Voltage Drop
– Each LED manufacturer has a different range for
acceptable voltage for lights to work properly
– 7 to 18 volts on the extremes
– 9 to 15 volts on average

25. • Wire size
– We can use smaller wire size for the same number
of fixtures with equivalent light output.
– 12AWG wire can handle 192 watts at 12 volts
• Equals five 35W incandescent fixtures
• Equals fifteen 12.2VA LED fixtures

26. • Wire length
T 64ft
175 W MR16
T 369ft
12.2VA LED

27. • You can mix LED and incandescent
– LED accent lights with incandescent path lights

28. HALOGIN LED LED

29. • No bulbs to change with LED’s

30. • LED lights tend not to draw insects

31. Fixture Wattage Quantity Sugg. Total
• List
T I Accent Light 35W 4 81.00 324.00
r n Wall Wash 50W 3 138.00 414.00
a s Path Light 25W 2 117.00 234.00
d t 600 Watt 600W power 1 720.00 720.00
i Transformer
a
Wire 10ga 1 627.00 627.00
t l
MR16 Lamp 5000 hrs 32 12.00 384.00
i l
8 x 4 fix
o a Bi Pin Lamp 2000 hrs 60 10.50 630.00
n t 20 x 3 fix
a i Wedge Base 4000 hrs 20 26.30 526.00
Lamp 10 x 2 fix
l o
n Total 340 $3859.00
Watts

32. Fixture VA Quantity Sugg. List Total
•
Accent 11.8VA (8.4W) 4 150.00 600.00
L
Wall Wash 16.8VA (12.4W) 3 187.50 562.50
E
Path Light 6.4VA (4.5W) 2 125.00 250.00
D
200 Watt 200W power 1 297.50 297.50
Transformer
Wire 12ga 1 350.00 350.00
Total 110.4VA $2060.00
80.2 Watts

33. Current System Explanation LED System
340 Watts 80.2 Watts
0.34kW Kilowatts used per hour 0.0802kW
13,600kWh Multiply 40,000 hours of operation by 3208kWh
kilowatts used
$1535.44 Multiply kilowatt hours used by $362.18
national average cost of 11.29¢/kWh
($84.07/year) Assuming no change in the cost of ($19.83/year)
(based on 6 hours use electricity - $1173.26 (based on 6 hours use
per day) per day)

34. Current System Explanation LED System
$972.00 Fixtures $1412.50
$1347.00 Transformer and Wire $647.50
$1540.00 Lamps $0.00
$1535.44 Electricity $362.18
Maintenance (?)
$5394.44 Total $2422.18
LED life cost is $2972.26 less

35. • LED is coming to age
• It is a green product in its manufacturing, Its
life cycle and its energy consumption
• Benefits out weigh the pitfalls
• Selection, quality and variety of fixtures is
increasing rapidly
• Cost effective in the long run

36. • Easy to design and install
• Less call backs for repairs from customers
• Don’t buy cheep or low cost LED’s they will
cost you an arm and a leg when its all said and
done.
• Retrofit bulbs are worth looking at and will
continue to improve with time

37. • Sean Mullarkey, Applied Water Technologies, Inc.
• Sean@TriStateWaterWorks.com
• Cell 513-379-5780