Converting to LED lighting gives RETURN ON INVESTMENT in 3 ways:

Using a premium quality PAR 38 halogen LAMP with a maximum life span of 2500 hours, you will need

20 bulb changes over 5.7 years. For an accurate cost analysis please feel free to estimate and add your

labor costs for changing 20 bulbs. (See ENERGY and MATERIALS costing below)

MATERIALS

-Traditional PAR FLOOD Halogen 90 Watt bulbs last 2500 hours.

-Standard PAR 90 Watt bulbs are approximately $7 in bulk supply.

COST TOTAL.(104 days = 2500 hrs.)

-A DIVVALI L.E.D. RECESSED FIXTURE using 12 Watts of power is our proposed direct replacement, fitting

neatly inside the existing fixture, or replacing it entirely as may be desired.

-Cost - $95 USD.

- A DIVVALI L.E.D. RECESSED FIXTURE TOTAL LIFESPAN is 80,000 hours. At 50,000 hrs the LED unit will

still be 70% of its original brightness (30% reduced).

-For purposes of this comparison 50,000 hours and 70% of original brightness will be considered the

end of usable life. It should be noted that traditional PAR FLOOD Halogen bulbs lose 30% of their original

brightness in the first 1/3 of their life span.

(2083 days = 50,000 hrs)

(One KWH is 1000 watts used for 1 hour, or 1 watt for 1000 hours)

- Quebec’s 2008 publicly available statistics on power rates for major North American cities show:

HALOGEN PAR FLOOD 90 Watts– ENERGY COST FOR ONE x 90 WATT LIGHT

90 Watts x 24 hours /DAY= 2160 Watt-hours or 2.16 KWH /DAY

365 DAYS/year x 2.16 KWH = 788.4 KWH per year.  

9.08 cents ($0.0908) /KWH x 788.4 KWH (one year)

 .....  $71.59/YEAR ENERGY COST / 1 YEAR

L.E.D. RECESSED FIXTURE- ENERGY COST FOR ONE x 12 WATT LIGHT

12 Watts x 24 Hours /DAY= 288 Watt-hours or .288 of a KWH / DAY

Labor / Maintenance cost for non-LED bulb replacement

routines NOT INCLUDED and can be significant.