The most recent craze among indoor growers is the COB LED grow light. COB, which stands for chip on board, is a technology that allows for many LED chips to be placed on one lighting unit. COB lights consume less power, are brighter, and have a higher light output than older LED lights using technologies like SMD and DIP.

COB LED grow lights have replaced traditional MH and HPS grow lights which operate at a high temperature and have a high energy consumption.

As indoor growers, there’s one thing we know for sure: the healthy development of plants is highly dependent on light. COB LED grow lights provide the best illumination for plants to bloom and produce high yields.

But there are so many COB LED grow lights, how do you choose the best one? We know it can be quite confusing to make a choice with so many options available. That’s why we’ve vetted and chosen the top COB LED grow lights.

Go through our list and choose the most suitable one for your needs.

TOP COB LED GROW LIGHTS in 2021

ProductRatingPriceWatt/hrAreaLifespan$/watt
Phlizon CREE COB Series 2000W LED Full Spectrum Plant Grow LightPhlizon CREE COB Series 2000W LED Full Spectrum Plant Grow Light
(4.4)
4.4/895
$269.994514 x 4 ft50000 0.59
COB LED Grow Light 3000W - Upgraded Spectrum High Yielding Plant Grow Lamp for Inddor Greenhouse Growing Veg Flower LightingCOB LED Grow Light 3000W - Upgraded Spectrum High Yielding Plant Grow Lamp for Inddor Greenhouse Growing Veg Flower Lighting$358.996566 x 6.5 ft50000 0.54
COB LED Plant Grow Light Full Spectrum Reflector Series LED Grow Light with Single Switch for Hydroponic Greenhouse Indoor Plants Veg and Flower (F2500)COB LED Plant Grow Light Full Spectrum Reflector Series LED Grow Light with Single Switch for Hydroponic Greenhouse Indoor Plants Veg and Flower (F2500)$339.985304.2*4ft50000 0.64
LED Grow Lights for Indoor Plants, CANAGROW High Intensity COB LED Grow Light Full Spectrum, Sunlike White LED Plant Light Growing Lamp, Wide Angle Glass Lens, No Fan No NoiseLED Grow Lights for Indoor Plants, CANAGROW High Intensity COB LED Grow Light Full Spectrum, Sunlike White LED Plant Light Growing Lamp, Wide Angle Glass Lens, No Fan No Noise$182.802854 x 4ft50000 0.64
Phlizon 2020 Newest 1000W Plant LED Grow Light Used with Samsung LM301B LEDs Dimmable Full Spectrum Grow Lamp for Indoor Plants Led Growing Light for 2x4ft CoveragePhlizon 2020 Newest 1000W Plant LED Grow Light Used with Samsung LM301B LEDs Dimmable Full Spectrum Grow Lamp for Indoor Plants Led Growing Light for 2x4ft Coverage$89.991002 x 4ft50000 0.89
1800 Watt X6 Cob Led Grow Light Full Spectrum Led Plant Light with Daisy Chain, Temperature and Humidity Monitor, Hanging Hook, Adjustable Rope1800 Watt X6 Cob Led Grow Light Full Spectrum Led Plant Light with Daisy Chain, Temperature and Humidity Monitor, Hanging Hook, Adjustable Rope$109.993005 x 550000 0.36
WILLS Cree COB Full Spectrum Grow Lights, 3000W LED Grow Lights for Indoor Plants Hydroponic Greenhouse with Thermometer Humidity Monitor and Adjustable Rope (Actual Power 619watt)WILLS Cree COB Full Spectrum Grow Lights, 3000W LED Grow Lights for Indoor Plants Hydroponic Greenhouse with Thermometer Humidity Monitor and Adjustable Rope (Actual Power 619watt)$299.996194' x 4'50000 0.48

$269.99
  • eye Total Reviews -895
  • star Review Score -4.4
  • flash Watt -2000
  • time Lifespan -50000
  • rulerArea -4 x 4 ft
  • 1 Warranty -2 years
  • battery Avg. power draw -451

Phlizon CREE COB Series 2000W LED Full Spectrum Plant Grow Light - Review

The two greatest features of this COB LED grow light are its high light output and its perfect spectrum for plants. Its coverage is also quite good (the maximum coverage is 4.1x4.1ft). We think the lumen output is brilliant, especially when it operates at full power. It is comparable to an 800 watt HID grow light. It only needs 451 watts to provide this coverage and will reduce your lighting electric bill by half. When you hang it at 18", it offers a PPFD of 2161.4 umol/m2s and enhances plant growth. The best part is that it doesn't have to run at full power if you don't want it to, thanks to the power-saving switches. You can switch off some diodes whenever you want. The light features a fireproof and UV protected frame and metal cover. The Phlizon 2000W COB light provides the perfect light spectrum for plants at all growth stages with sufficient amounts of blue, red, and white light. With a lamp life of 50,000 hours and more, you won’t need to replace this light for at least 5 years. Pros
  • High light output – uses powerful 50W CREE COB LEDs
  • Wide coverage (4 by 4ft core coverage)
  • Best spectrum for plants
Cons
  • Costs a bit more than other 2000W grow lights
  • Cannot be daisy chained to other lights
  • CREE COB LEDS- CREE COB is known for high power and stability. CREE COB, higher brightness, smaller thermal resistance, less light attenuation and longer life.CREE COB itself is a full spectrum design with high PPFD value which can promote faster and better plant growth
  • EXTREMELY HIGH PPFD- PPFD, Photosynthetic Photon Flux Density,Hanging at 18", the PPFD is 941 umol/m²s. The bigger the density, the higher the value, the better the plant. COB LED has highest PPFD output. COB LED is much brighter and more efficient than traditional LEDs.
  • FULL SPECTRUM- The CREE COB LED itself is a full spectrum lamp integrated design bead. We have added additional light beads in various bands to ensure the scientific full spectrum. It contains 4pcs COB, 68pcs 630-660nm, 10pcs 470nm, 6pcs 6500k, 4pcs 3000K, 4pcs UV, 4pcs IR
  • MAXIMUM ENERGY SAVING- The actual power is 400watt. Best hang height at 24",Core Coverage area at 47"*47"(3.9*3.9ft). Maximum coverage area at 49"*49"(4.1*4.1ft). It is more scientifically and energy-efficient than HPS HID and MH. It serves both herb/veg/bloom and is convinient for you.
  • BEST SERVICE- We are a professional LED light manufacturer with strong R&D team and many light tester. 2 years warranty plus 30 days money back guarantee. If you have any problems, please feel free to contact us. We will provide you with completely satisfing reply.

$358.99
  • eye Total Reviews -0
  • star Review Score -0
  • flash Watt -3000
  • time Lifespan -50000
  • led LED pieces/watt -148pcs High Intensity Double Chips 10watt + 6pcs x 50w COB
  • rulerArea -6 x 6.5 ft
  • 1 Warranty -3 years
  • battery Avg. power draw -656

COB LED Grow Light 3000W - Upgraded Spectrum High Yielding Plant Grow Lamp for Inddor Greenhouse Growing Veg Flower Lighting - Review

  • 【 UPGRADE SPECTRUM LED GROW LIGHT 】 - This cob led grow light 3000w adds 3pcs developed 3400K COBs. which is verified playing an important role in plants growth, will bring much better results
  • 【 OPTIMAL FULL SPECTRUM from 380nm to 780nm 】 - Different with other common led grow lights with red and blue leds and regular cobs, we have added additional light beads in various bands to ensure the full spectrum of science. This 3000w grow light cob contains 3pcs 3400K COB, 3pcs 6500K COB, 20pcs 650-660nm, 85pcs 620-630nm, 5pcs 460nm,30pcs 3000K, 4pcs UV, 4pcs IR. At the same time, the COB LED itself is a full spectrum lamp integrated design bead
  • 【 EXTREMELY HIGH PPFD 】 - PPFD, Photosynthetic Photon Flux Density,Hanging at 24", the PPFD is 1855 umol/㎡s. The bigger the density, the higher the value, the better the plant. COB LED has highest PPFD output. COB LED is much brighter and more efficient than traditional LEDs. This 3000w cob grow light will bring better results
  • 【 MAXIMUM ENERGY SAVING 】- The cob 3000w grow lamp actual power is 655watt. It consumes less but brighter and more powerful than HPS HID and MH.It is more scientifically and energy-efficient. Best hang height at 24",Core Coverage area at 55"*60"(4.6*5ft). It also serves both herb/veg/bloom and is convinient for you
  • 【 BEST SERVICE 】- We are a professional LED light manufacturer with strong R&D team and many test devices, all our grow lights must pass a series of strictly tests before leaving factory. All AGLEX grow lights are with 3 years warranty plus 30 days money back guarantee. If you have any problems, please do not hesitate to contact us, we will get back to you with completely satisfing reply in 24 hours

$339.98
  • eye Total Reviews -0
  • star Review Score -0
  • flash Watt -2500
  • time Lifespan -50000
  • led LED pieces/watt -143 leds
  • rulerArea -4.2*4ft
  • 1 Warranty -3 years
  • battery Avg. power draw -530

COB LED Plant Grow Light Full Spectrum Reflector Series LED Grow Light with Single Switch for Hydroponic Greenhouse Indoor Plants Veg and Flower (F2500) - Review

  • 💞 【COB TECHNOLOGY LEDS】 - COB with higher brightness, smaller thermal resistance, less light attenuation and longer life. Our COB itself is a full spectrum design with high PPFD value which can promote faster and better plant growth.
  • 💞 【FULL SPECTRUM】 - The COB LED itself is a full spectrum lamp integrated design bead. We did lots of experimentation to ensure that this full spectrum design promotes plant growth. It includes universal Blue Red IR and white light provide everything plant desire in the natural sunlight.
  • 💞【DAISY CHAIN AVAILABLE】 - The led grow lamp with daisy chain design allows multiple lights to connect in parallel at the same time. If using the typical 110V AC supply, each light draws 1.64A. To ensure safety, not more than 6 lights together per chain.
  • 💞【SAVE 82% ELECTRICITY BILL】 - The actual power is 190 watts! The best hanging height at 20"-28", The core coverage area is 4.2*4ft at height around 22". It is more scientifically designed to be more energy-efficient than HPS and MH.
  • 💞 【LIFETIME AFTER SALE SERVICE】- We offer 36 Months Warranty and 30 days money back guarantee. We provide lifetime after sale service for the products.

$182.80
  • eye Total Reviews -0
  • star Review Score -0
  • flash Watt -285
  • time Lifespan -50000
  • rulerArea -4 x 4ft
  • 1 Warranty -3 years
  • battery Avg. power draw -285
  • recycle HID Replacement -600 watt HPS/CMH

LED Grow Lights for Indoor Plants, CANAGROW High Intensity COB LED Grow Light Full Spectrum, Sunlike White LED Plant Light Growing Lamp, Wide Angle Glass Lens, No Fan No Noise - Review

  • 【Luminus CXM-32 COB LED】This is the newest COB LED grow light bulb in the market. The naming comes from the LED which is made by Luminus CXM-32. It's a very well-known LED brand in the world. Each LED can reach up to an impressive 285w of power. The LEDs are not only extremely powerful but also produce the most ideal sunlike spectrum for proper plant growth. The wavelengths of the cob led grow light bulb from 380 to 800nm, The cob led grow light bulb was designed specifically for growing plants.
  • 【Improve Plant Growth Quality and Effectiveness】This full spectrum led grow light bulb can rapidly improve the speed and density of foliage and growth overall, efficiently promotes leaf and rhizome growing, protein synthesis, blooming and fruiting. The cob led grow light bulb made with wide angle 90° glass lens, it make the cob led grow light bulb has the capability to penetrate dense foliage canopies. Full Spectrum LEDs are highly beneficial during both Vegetative and Bloom cycles.
  • 【High-Efficiency & Scientific Heat Dissipation Design】Our cob led grow light bulb are made of all aluminum case, and designed with unique 72 fins heatsink construction, aluminum is the best thermal material, through this special heat dissipation structure, can dissipate all the heat quickly and very well, don't need a fans, and without noise, at an ambient temperature of 25°C, the working temperature of the light is below 60°C, ensure the cob led grow light bulb has 100,000 hours long lifespan.
  • 【Compare to HPS/MH】This cob led grow light bulb can replace traditional 600 watt HPS/CMH while consuming only 170 watts! More effective coverage area than any reflector series lights, and no reflector without danger. perfect for a 4x4ft growing area at 24" height. This cob led grow light bulb gain a high PAR output, it's about 2680umol at 8", and about 1491umol at 12", gain a high yield.
  • 【Satisfaction Guarantee】We are a professional led grow light manufacturer with strong R&D team and many light tester. 24-hour professional service center, 30 days full refund, 1 years warranty and 365 days technical support. You can always come to us for free customer service at: https://www.amazon.com/sp?_encoding=UTF8&asin=&isAmazonFulfilled=1&isCBA=&marketplaceID=ATVPDKIKX0DER&orderID=&seller=A135IBEV9A45CL&tab=&vasStoreID=

$89.99
  • eye Total Reviews -0
  • star Review Score -0
  • flash Watt -1000
  • time Lifespan -50000
  • led LED pieces/watt -Samsung LM301B leds 260pcs
  • rulerArea -2 x 4ft
  • 1 Warranty -3 years
  • battery Avg. power draw -100

Phlizon 2020 Newest 1000W Plant LED Grow Light Used with Samsung LM301B LEDs Dimmable Full Spectrum Grow Lamp for Indoor Plants Led Growing Light for 2x4ft Coverage - Review

  • USED WITH SAMSUNG LM301B DIODES- This LM301B leds runs at a lower temperature than normal leds so there is no need any heat sink . Phlizon QB grow light used with Samsung LM301B leds 260pcs , It also has higher light intensity, less light decay , better lumens and PAR values than ordinary leds. and can bring higher energy conversion and longer life. This grow light is a full-cycle lighting solution for all growing environments and is ideal for greenhouse or indoor sole-source lighting.
  • DIMMABLE FULL SPECTRUM DESIGN- The intensity of light can be adjusted according to the needs of the plants. The leds are all LM301B leds chips, It contains 180pcs 3000K leds ,72pcs 6000K leds, 8pcs 660nm red leds.
  • EXTRA TWO UNIQUE FUNCTIONS- No fans no noise and waterproof function. No additional fan zero noise. Otherwise, the plant grow light uses advanced waterproof power supply which is installed outside of the light and it is easy to be replaced. The light board adopts sealing technology, so whole plant grow light is water resistant. No need to worry about the humid planting environment to damage the plants light
  • ENERGY EFFICIENCY- Actual power is 100watt, light efficacy is up to 3.07 umol/W, light output PPFD value is 307 umol/m² hanging at 18", grow light is designed to replace tranditional HPS , lower temperature , more scientifically and energy-efficient. making you get 30% higher yield than HPS. Perfect for 2x4ft growing area, higher intensity in a Phlizon mylar grow tent
  • BEST SERVICE- We are a professional LED light manufacturer with strong R&D team and many light tester. 3 years warranty plus 30 days money back guarantee. If you have any problems, please feel free to contact us. We will provide you with completely satisfying reply.

$109.99
  • eye Total Reviews -0
  • star Review Score -0
  • flash Watt -1800
  • time Lifespan -50000
  • rulerArea -5 x 5
  • 1 Warranty -3 years
  • battery Avg. power draw -300

1800 Watt X6 Cob Led Grow Light Full Spectrum Led Plant Light with Daisy Chain, Temperature and Humidity Monitor, Hanging Hook, Adjustable Rope - Review

  • 【WHY CHOOSE COB】Multi LED chips are packaged together as one lighting module, which is more efficient and durable. Note: this plant lights can continuosly work for at least 20 hours a day. The statement on manual saying that the light should be turnned off for 30 mins every 8 hours is just a suggestion.
  • 【DAISY CHAIN】The power cord can be used for power and daisy chain, which will help simplify the operation and management. You can link up to 3 PCS once, please note the maximum current limit.
  • 【 FULL SPECTRUM WITH UV】1800W COB LED plant light is fully simulating natural sunshine,which includes red, blue, white, UV/IR, perfectly meet the need of all kinds indoor plants in their growth cycle.
  • 【ENERGY SAVING and 3 FANS COOLING SYSTEM】The 1800W COB LED grow light is much efficient than traditional HPS/MH while consuming only 300 watts! More effective coverage area than any reflector series lights. With 3 fans inside,the heat will be dissipated rapidly so as to ensure the 1800W COB LED grow light's long lifespan.
  • 【BEST AFTER-SALE SERVICE】We offer 90 days money back guarantee plus 3 years warranty. If you have any problems about the product,please feel free to contact us. We will reply you within 24 hours!

$299.99
  • eye Total Reviews -0
  • star Review Score -0
  • flash Watt -3000
  • time Lifespan -50000
  • led LED pieces/watt -150pcs*20w led
  • rulerArea -4' x 4'
  • 1 Warranty -3 years
  • battery Avg. power draw -619

WILLS Cree COB Full Spectrum Grow Lights, 3000W LED Grow Lights for Indoor Plants Hydroponic Greenhouse with Thermometer Humidity Monitor and Adjustable Rope (Actual Power 619watt) - Review

  • CREE COB LEDS - CREE COB is known for high power and stability. CREE COB, higher brightness, smaller thermal resistance, less light attenuation and longer life.CREE COB itself is a full spectrum design with high PPFD value which can promote faster and better plant growth
  • ENERGY SAVING - The actual power is 619 watt.Best hang height at 24",Core Coverage area at 36"*36"(3*3 ft). Maximum coverage area at 42"*42"(3.5*3.5 ft). It is more scientifically and energy-efficient than HPS HID and MH. It serves both herb/veg/bloom and is convinient for you.
  • FULL SPECTRUM- The COB LED itself is a full spectrum lamp integrated design bead. We have added additional light beads in various bands to ensure the full spectrum of science. It contains 6pcs COB, 110pcs 630-660nm, 12pcs 470nm, 12pcs 6500k, 4pcs UV, 6pcs IR
  • BETTER COOLING & LOWER NOISE - 4 PCs built-in high speed fans and the metal housing with vents make the COB grow lights good at heat dissipation, keep it cool and work with low noise, which well extends the lights lifespan
  • WORRY-FREE SERVICE - WILLS is a professional LED light manufacturer with strong R&D team and many test devices, all our grow lights must pass a series of strictly tests before leaving factory. WILLS grow lights are with 2 years warranty plus 30 days money back guarantee. If you have any problems, please do not hesitate to contact us, we will get back to you with completely satisfing reply in 24 hours

Update log: Last update 04.25.2021

Buying Guide for COB LED Grow Lights

When deciding which COB LED grow light to buy, there are important factors to consider and questions to ask. This guide will give you clarity and help you to decide which light is best for your specific requirements.

Here’s what to look for.

1.      Full Spectrum

For plants to grow well, they require a particular range of light spectrum. Outdoors, natural light from the sun provides plants with a full spectrum for their growth. Indoors, LED grow lights provide plants with optimum light wavelengths. This optimal range is commonly known as PAR (photosynthetically-active radiation).

This spectrum has wavelengths between 400nm and 720nm. Plants typically use red light (620nm-700nm) and blue light (400nm-500nm) wavelengths in the highest concentrations. For this reason, the performance of COB LED grow lights should be measured in relation to PAR instead of lumens. A handy device called a PAR meter can help you measure the PAR output of your grow light.

2.      The Size of Your Grow Area

If your grow area is 5X5ft, a COB LED grow light with 3X3ft coverage won’t be able to provide sufficient light to your plants. Your plants should be well illuminated by the light in order to grow and flourish.

3.      Ultraviolet (UV) Light

Most grow lights on the market have very few chips with a UV spectrum for valid reasons. A high amount of UV light can be detrimental to the plants, damaging their physiological processes and endangering human beings as well. Most grow lights feature a small amount of UV which is safe for plants. UV light can make plants very potent.

4.      Dimming Feature

COB LED grow lights that are dimmable allow you to adjust the light depending on the growth stage of the plants. As they germinate, the light can be dimmed to minimum to support growth at that stage. Very bright light at this stage can slow down growth and damage plants.

As the plants grow, the light can be increased at each stage because they can tolerate the brightness without any risk of damage to their growth.

5.      Cooling System

All COB LED grow lights feature a cooling system, and rightfully so. But cooling systems are different. Choose a light with an in-built aluminum heat-sink, powerful fans, an air outlet and an inlet. These keep the light cool and prevent overheating, which could damage it. Also, the atmosphere around the plants remains cool and their growth process is not affected.

6.      Price

The prices of COB LED lights differ as night and day. You might be tempted to get a cheaper light, but will it meet your particular needs? Look for a light that offers the best value for money.