We couldn’t find any objective data on fluorescent bulb performance in high temperature situations. Low and High Pressure Sodium bulbs are fragile relative to LEDs. Typical lifespan values for an HPS bulb are around 24,000 hours. Low and High Pressure Sodium Lamps come in all shapes and sizes but are typically used for outdoor applications where size isn’t a major factor. Not too long ago, Access Fixtures was contacted by a property owner seeking to upgrade her outdated 250w, 2100K, high pressure sodium (HPS) wall packs to LED wall packs. The uniform light coverage is perhaps the best characteristic of Spider Farmer grow lights and other quantum board grow lights. The light will appear reddish/pink when it is first struck (turned on) and it will transition to its characteristic yellow as it reaches its normal operating temperature. Mastled Lighting Technology CO LTD specializes in researching, manufacturing and customization of LED indoor and outdoor light fixtures since 2008, with monthly output of over 50,000 lamps. Parking Lot Lighting, Find the Right LED … Snow falling on traditional lights like HID will melt when it comes into contact with the light. High Pressure Sodium lamps emit visible light across a slightly more broad spectrum than Low Pressure Sodium lamps, they are still very limited. LED is the newest and by far the best lighting technology available, using less wattage to produce high levels of brightness. High pressure sodium vapor (HPS) lights, similar to LPS lights, are a specific type of gas-discharge light (also known as a high intensity discharge, HID or arc light). Topics: LED lighting has relatively high initial costs and low lifetime costs. You can get in touch with us 24 hours a day, 7 days a week. Low and High Pressure Sodium lights are the only light whose source efficiency compares to LEDs (values range between 50 and 160 lumens/watt for LPS and slightly less for HPS). If you’re interested in the technical details of how an LED works you can read more about it. Both LEDs and sodium vapor lights emit electromagnetic radiation across a small portion of the visible light spectrum, however, LEDs waste much less energy producing waste heat and they also provide an incredibly better variety of high color rendering index options to the user (thus eliminating the monochromatic black appearance of objects illuminated by LPS and HPS bulbs). Among the deficiencies in this lighting are the following: Among the minor deficiencies in sodium vapor lighting are the following: Common applications for sodium vapor lighting includes street lighting and parking lots as well as for tunnel lighting where color rendering isn’t a major issue. High Pressure Sodium lights maintain their luminescence fairly well with 90% still available halfway through their lifespan (around 12,000 hours). The typical 100W-equivalent LED light costs somewhere between $10 and $20. Although High Pressure Sodium lamps emit visible light across a slightly more broad spectrum than Low Pressure Sodium lamps, they are still very limited. Needless to say, converting from HPS to LED is definitely something you should consider for your home or office. They do, however, show degraded performance at significantly high temperatures and they require significant heat sinking, especially when in proximity to other sensitive components. The difference between led vs hps lumens per watt is greater because there's less "loss" of light. Heat output also increases with additional current which decreases the lifetime of the device. LEDs last longer than any light source commercially available on the market. As you can see, LED lights use far less energy to produce light of a much better quality. The difference is that sodium vapor lights were the most efficient technology of the 1970s while LEDs are the modern day equivalent. If you have any information please, Energy Service Companies (ESCO)/Contractors. The first practical use of LEDs was in circuit boards for computers. By far the most efficient HID variant is the Low Pressure Sodium lamp whose source efficiency can range from 60-190 lumens/watt. Lumen Comparison Chart. Additionally, despite their long warm-up period (5-10 minutes), low pressure sodium lamps will re-ignite immediately in the event of a power interruption. I cannot stress enough that there is no such thing as a 1-for-1 replacement of HPS by LED! If we had included air conditioning, it would make LED grow light vs HPS lighting even more cost effective in less time. It can take up to 10 minutes to get the LPS or HPS lamp up to its normal operating temperature. There are many variables, so lets dig in! HID vs. This is usually overcome with LEDs by covering the light with a visor or facing the light downward towards the ground. We are going to tackle the question which light bulb type reigns supreme? The HPS vs LED grow light matchup is a clash of the titans. I know that you have an opinion, I certainly did! Do you plan to undertake that long-postponed high pressure sodium to LED conversion for the lighting in your home or office? LEDs are available in a wide range of color temperatures that generally span from 2200K-6000K (ranging from “warm” yellow to light or “cool” blue). LED stands for light emitting diode. Roughly 15% of the emissions are lost due to energy dissipation and heat losses. LPS lamps emit a monochromatic yellow light which very much inhibits color vision at night. Sodium vapor bulbs contain metals that are evaporated into inert gas within the glass casing while LEDs are a solid state technology. A diode is an electrical device or component with two electrodes (an anode and a cathode) through which electricity flows - characteristically in only one direction (in through the anode and out through the cathode). Most values for LED system efficiency fall above 50 lumens/watt. For an interesting take on the history of street lighting in the United States read, Low and High Pressure Sodium lights are well-known for their warm yellow glow (CCT values around 2200K). As for overall chemical profile: Total THC percentage was over 24% higher under LED. These include the following: Considering the upside you might think that LED lights are a no-brainer. The only real potential downside to this is when LEDs are used for outdoor lighting in wintery conditions. Red is the ideal spectrum for stem growth, flowering and fruiting. Since we know the frequency of bulb replacement varies from one gardener to the next, we studied two scenarios: “optimal” and “economical,” as explained in the HID light chart … Both technologies are very efficient. The technology pays the investor back over time (the payback period). Only) $ $230.00 $475.00 Fixture Installation (Labor) $ $29.00 $29.00 Manufacturer's Lamp Life Hours 20,000 50,000 Annual Energy Costs $ $72.36 $32.88 Lamp Replacement Cost $ $1.20 per month $0.60 per month* The Grow Closet. HPS bulbs typically emit 80% of their original rated output at the end of life (around 24,000 hours). Low and High Pressure Sodium bulbs are long lasting but will still require replacement several times in addition to the labor cost to monitor and replace aging or expired components all within the lifespan of a single LED. LED Grow Light Comparison. They lose out to LEDs in many cases because their system efficiency is often much lower due to losses associated with omnidirectional light output and the need to redirect it to a desired area. The current unit for measuring brightness is the lumen, which represents the amount of light produced by a bulb or a lamp. Additionally, HPS lamps pose a potential fire hazard, especially when you dispose of them. absorbed by the ballast and/or lost to the environment. Sodium vapor lighting typically requires a “warm-up” period in order to evaporate the internal gas into plasma. LPS or HPS lights will still likely need to be purchased several times and the associated labor costs will need to be paid in order to attain the equivalent lifespan of a single LED light. 100 Degrees Celsius. LEDs emit light for 180 degrees. Are they equivalent?How do we conduct the ultimate grow light review? 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