How Do Different Lights Compare

Date posted:

CVM Electric has done hundreds of lighting upgrades because switching to fluorescent lighting is 3X more efficient than standard incandescent lighting and lasts 10 times longer!  Payback on your investment can be less than a year. This is a 100% return on your investment and it creates longterm savings for your property.  There are also New York State incentives that directly reduce the cost of lighting upgrade.  CVM Electric can help you with all of them.  See the chart below to compare the different types of lighting.

Type Efficacy
(lumens
/watt)
Lifetime
(hours)
Color Rendition
Index (CRI)
Color Temp
(K)
Indoor/
Outdoor
Incandescent
Standard
"A" bulb
10–17 750–
2500
98–100
(excellent)
2700–2800
(warm)
Indoor/
outdoor
Tungsten
halogen
12–22 2000–
4000
98–100
(excellent)
2900–3200
(warm to neutral)
Indoor/
outdoor
Reflector 12–19 2000–
3000
98–100
(excellent)
2800
(warm)
Indoor/
outdoor
Fluorescent
Straight tube 30–110 7000–
24,000
50–90
(fair to good)
2700–6500
(warm to cold)
Indoor/
outdoor
Compact
fluorescent
50–70 10,000 65–88
(good)
2700–6500
(warm to cold)
Indoor/
outdoor
Circline 40–50 12,000     Indoor
High-Intensity Discharge
Mercury vapor 25–60 16,000–
24,000
50
(poor to fair)
3200–7000
(warm to cold)
Outdoor
Metal halide 70–115 5000–
20,000
70
(fair)
3700 (cold) Indoor/
outdoor
High-pressure
sodium
50–140 16,000–
24,000
25
(poor)
2100 (warm) Outdoor
Low-Pressure
sodium
60–150 12,000–
18,000
-44 (very poor)   Outdoor