Metal Halide or HPS - What's the Difference?

Metal Halide or HPS - What's the Difference?

Metal Halide (MH) and High Pressure Sodium (HPS) are the two most commonly used high efficiency light sources.

Common Features:

  • Both are High Intensity Discharge (HID) light sources
  • Both require a warm up period of approximately 4 minutes to reach full brilliance.
  • Both require a ballast a provide the correct electrical environment for the lamp
  • Both have relatively long lamp life (MH = 10,000 hours & HPS = 24,000 hours) compared to the 2000 hours for non HID (incandescent & quartz) lamps
  • Both have arc tubes containing a light emitting gas

Differences:

Feature

Metal Halide (MH)

High Pressure Sodium (HPS)

Efficiency in Lumens per Watt

83

107

Lamp Life

10,000 hours

24,000 hours

Light Color

Bluish White

Yellow-Orange

Color Rendition (CRI)

65

21
In summary:
  • Choose HPS if you want the maximum in energy efficiency and lamp life
  • Choose MH if you want the excellent color rendition with good efficiency


Top Selling Lighting Categories
RAB FFLED39<br> 39 Watt LFLOOD<br> LED Flood Lights
RAB STL360H <br>Stealth 360&deg; <br>with Bell Floods <br><b>Motion Sensor Lights</b>
RAB STL200 <br>Stealth 200 <br><b>Motion Sensors</b>
RAB FFLED39
39 Watt LFLOOD
LED Flood Lights


$355.71
Finish: 
Temperature: 
Photocell: 
Quantity:
RAB STL360H
Stealth 360°
with Bell Floods
Motion Sensor Lights


$135.00
Finish: 
Quantity:
RAB STL200
Stealth 200
Motion Sensors


$90.00
Finish: 
Quantity:
RAB PLED2X10 Led Pendant 2 X 10W Led
RAB LOS800 Smart Switch <br>800 Watts, 3 Wire <br>Motion Sensor Light Switch
RAB LLD3 3 Tier Dome Incandescent <b><br>Path Light</b></br>
Broan 161 <br>One-Bulb, 250 Watt <br><b>Heat Lamp</b>
RAB PLED2X10 Led Pendant 2 X 10W Led

$372.86
Finish: 
Temperature: 
Quantity:
RAB LOS800 Smart Switch
800 Watts, 3 Wire
Motion Sensor Light Switch


$33.33
Finish: 
Voltage: 
Quantity:
RAB LLD3 3 Tier Dome Incandescent
Path Light



Price $31.67Sale Price $30.00
Finish: 
Quantity:
Broan 161
One-Bulb, 250 Watt
Heat Lamp


$36.69
Quantity: