Replacing fluorescent lamps with LED T8 lights

Our office currently runs standard fluorescent strip lights (1500mm T8 tubes) throughout, with over 60 bulbs across 3 floors. We are considering upgrading all the lights to LED bulbs, in order to save power and to make them compatible with an office automation system (to turn them on and off automatically).

Energy savings

So, how much energy will they save? Well a standard fluorescent bulb consumes about 58w, whereas the new LED bulbs consume around 20W. Therefore over the course of a year I would anticipate the energy savings to be as follows:

  Standard Fluorescent Bulb LED Bulb
Power Consumption 58 Watts 20 Watts
Hours in use 10 hours per day, 5 days a week, 52 per year
Hours per year 2,600
Kilowatt hours per year (watts / 1000 * hours) 150.80 kWh 52 kWh
Cost per year (at 10p per kWh) £15.08 £5.20

Thus the saving is about £10 per year per bulb.

We are currently asking suppliers to quote us for 60 bulbs, and the prices we have received so far range between £25 to £60 per bulb.

The bulbs are rated for about 50,000 hours of constant usage, which should mean they would last nearly 20 years at the rate of usage we have forecast.

Standard bulbs last about 5,000 hours (2 years) and cost around £2 each.

It looks like the energy saving bulbs should pay for themselves after 3 – 5 years, and return a yield of around 20% thereafter.

Things I haven’t factored in:

  • Cost of installation / replacing bulbs (slighty more difficult to initially install, but they last 10 times as long and therefore need less labour to replace).
  • Reduced heat from operation – might require less air conditioning in summer months)

129 thoughts on “Replacing fluorescent lamps with LED T8 lights”

  1. Huayuan Lighting Co., Ltd is a high-tech company engaged in scientific researching, manufacturing, marketing, technical support and service of LED ceiling light,LED lights,LED bulbs, LED spotlight ,LED fluorescent tube,LED lighting. We have advanced and professional equipments are utilized to aid LED assemblies of LED strips, array and various luminaire. The equipments include SMT assembly, auto soldering lines, opto-electrical test devices, light and optical distribution analysis devices. We have experienced technicians and salespersons, and We offer customer integrated-service including pre-sale service,after-sale service,technical support and transportation service.

  3. Physical Parameters:
    Overall Size: 15 x 1200mm
    Housing material:6063 Aluminum
    Base material: PC
    IP Rate：IP40
    Life span：50,000 hours
    Net weight: 0.298kg
    Surface temperaturte：≤45℃
    LED weld point temperature：≤48℃
    Working temperature: -20℃ – 45 ℃
    Storage temperature: -20℃ – 80 ℃
    Storage humidity: 20%~ 80%
    Working humidity: 10%~90%
    Indoor use
    Non-dimmable

    Optical Parameters:
    Output lumens: 1045lm(warm white), 1045lm( neutral white & cool white)
    Color temperature: Warm white(3000-3500K), Daylight white(3500-4500K), Cool white(5500-6500K) options
    Emitting angle: 120 degrees options
    Light source ( LED chips) brand: CREE, Bridgelux, Edison
    Numbers of LEDs: 168 pieces
    Lens type: PMMA Lens
    Color rendering index: 80+(warm white), 70+(daylight white & cool white)
    Illuminance: 313 LX @ 1.0M,110LX @2.0M, 56 LX @3.0M
    Luminous efficacy: 95lm/watt
    Electrical Parameters:
    Working voltage: 85-264Vac/dc
    Frequency: 50-60Hz
    Rated power: 11 watts
    Protection: Input over current protection, Output short circuit protection, Output over current protection
    Pass EMI & LVD testing
    Power factor: 0.9
    Constant current LED driver
    via:http://ahleds.com/led-tube-lights/led-tubes/11w-t5-led-tube-light-ah-t0512-16811a

  4. good T8 led tube lights article!!we are china led tube light manufacturers factory
    21W T8 LED Tube Light:
    Electrical Parameters:
    Working voltage: 85-264Vac/dc
    Frequency: 50-60Hz
    Rated power: 21watts
    Protection: Input over current protection, Output short circuit protection, Output over current protection
    Pass EMI & LVD testing
    Power factor: 0.9
    Constant current LED driver

    Optical Parameters:
    Output lumens: 1995lm(warm white), 1995lm( neutral white & cool white)
    Color temperature: Warm white(3000-3500K), Daylight white(3500-4500K), Cool white(5500-6500K) options
    Emitting angle: 120 degrees options
    Light source ( LED chips) brand: CREE, Bridgelux, Edison
    Numbers of LEDs: 276 pieces
    Lens type: PMMA Lens
    Color rendering index: 80+(warm white), 70+(daylight white & cool white)
    Illuminance: 500LX @ 1.0M,180LX @2.0M,90LX @3.0M
    Luminous efficacy: 95lm/watt
    via:http://www.ztlights.com/view_21W%20T8%20LED%20Tube%20Light%20-AH-T0812-31221B.html
    contact us:cosmo
    TEL:86-0755-27798801
    FAX:86-0755-27798805
    MSN:[email protected]
    SKYPE:ahlights
    ADD:No. 9, Xiaweiyuan Industrial Zone, Gushu 2nd Road, Xixiang Town, Bao’an District,Shenzhen,GuangDong ,China

  5. Hello All.

    We are shenzhen Chinese factory of Led home lights & commericial lights.Our main product lins cover LED Tube lights ,LED Downlights, LED Panel lights,LED Spotlights, and LED Global bulbs, All led lights we Producted

    LED Tubes is one of our core products .They are hot sales in Europe spain ,netherland ,UK etc. If anyone interested. welcome to inquiry me freely

    Yolanda Duan
    Shenzhen Aohai Optoelectronics Co.Ltd
    Website: http://www.ahlights.com
    Email:[email protected]
    M:+86-13570803794
    Skype:ledyolanda

  7. Dear Sir,
    I obtained your information from internet,knowing you are in LED lamp buziness line.
    We,OLAMLED,are a strong and reliable manufacturer from China.Product involves:◆LED tube,◆LED ceiling light.
    More information,welcomed to visit our website: http://www.olamled.com/.
    Please contact me for more details.
    Sincerely yoursSunkey
    Company: Olam Lighting Shenzhen Co., Ltd
    Add: 2F,Baosheng Building,Leizhujiao,Huangmabu Xixiang Town.
    Baoan District ,Shenzhen China.
    Tel: +86-755-27953887-805
    Email:[email protected]

  8. After nearly 4 years of selling LED lighting! Which at times has been hard I can now say the good times are here?
    The quality of the products have never been higher whilst the cost have fallen to a level that will allow any small to medium businesses to change their existing lighting to LED lighting and start saving money.
    Due to the low cost, our 8 watt 600mm (at just £13.75) replacing 168 units in a shop using 30 watt (+ ballast) for 12 hours a day costing the shop £2650 per year + maintenance costs of between £300-£400 per year Total £3,000. After purchasing the tubes and paying the installation (£2650.00) the shop will have a return on their investment in around 9 months. They will also be able to claim back around 19% of the cost of the Tubes on enhanced capitol allowance this will add a further £440.
    So in the first year they will save nearly £800! And next year over £2000, so why wait?
    We have a wide range of LED lighting products all with a 3 year warranty and supplied to you from a UK company.
    Visit our website today http://www.ddsukltd.com or email [email protected] for a quote.
    Alistair Roberton

  10. Dear purchasing manager:
    Thank you very much for reading this email.Hope to cooperate with you.
    We are manufacturer of energy-saving LED Tube, LED Global Bulb, LED Ceiling Light, LED Spotlight to LED Candle Light and LED Panel Light.Shared with CE,UL certification,we can also cover your need with OEM/ODM way and handle your required certification.
    We are going to attend Japan Lighting Fair in two months after a successful show in HongKong Int Lighting Fair last month.Maybe we could meet there and have a good chat.
    Contact us directly if you have any question.
    Have a nice day!
    Chuck Chen
    Sales Department
    Xiamen Greenlumi Optoelectronics Ltd.
    7/F, Haiyun Building, No.16, Haishan Road, Xiamen, 361013, China.
    Tel: +86-592-5208400
    Fax: +86-592-5207400
    Mobile: +86-13599914773
    Email: sales5(at)greenlumi(dot)com
    www(dot)greenlumi(dot)com

  11. Dear Everyone,

    Glade to share with you our latest T8 led tube, please check the following info:

    1: Very safe
    a: For its ultra design, aluminium inner the PC pipe, and round PC pipe outside, so you can’t touch the metal outside.
    b: Connect any two pins of four, the tube can be lighted, and you can touch other two pins safely.

    2: Installation convenient, no need to remove starter and ballast.

    3: No RF interference, No Flickering, No Noise

    4: Long lifespan
    As you know, LED driver decide the lifespan of led tube. Our company are very strict to LED driver, and the driver was developed and manufactured by ourselves. The patent design meet CUL standard. Two key components: Japan Rubycon Capacitor, 3 Philips IC.

    Comment, please!

    Best Regards,

    Jerry Du

    Email: [email protected]
    http://www.gielight.com
    SKYPE: gielight-jerry

  12. Dear manager
    It is glad to write to you with keen hope to open a business relationship with you.
    Our Shenzhen Ledtek Optoelectronics Technology Co.,Ltd is one of the best professional factory to develop and manufacture LED Lights.We specialize in LED Lights fields for many years.All of our products get CE (Europe) and RoHS (Europe), our T8 LED tubes approved TUV (Europe) certification.

    Our products embrace:
    ● LED Tube lights
    ● LED Bulb
    ● LED Spotlight
    ● LED Signage Lighting
    ● Flexible LED Strip
    ● Aluminum LED Strip
    ● LED Flood Light
    ● LED Moving Sign

    Any requirement and enquiry. contact me!

  13. There is no doubt that the LED lighting market is growing at a substantial rate, but can you really be sure that the product you are buying is safe and reliable? It is easy to buy direct from Chinese suppliers via the internet at what seems to be at a good price!
    Many suppliers quote 50,000 life span, this is a theoretical life span and without the correct components and quality, it is unlikely that this life cylcle will be acheived.

    With our own office in Guangzhou, China and a number of longer term partners, we have a range of quality products that have all passed independent inspection and carry our own CE Certification. It is worth noting that it is impossible for any Far East manufacturer to offer a CE approval, it is the European Importer that is responsible for such certification.

    We have a range of products for both commercial and residential use, we have a full installation service if required and have project throughout the UK with many thousand LED lamps installed. With our own range of products, we have the most competitive prices in the UK.

  14. Hello, Sir / Madam:

    We are LED Lights factory and supply LED Lighting series(CE,ROHS,FCC, TUV, SGS certificates) with high quality and competitive price.
    Hope to cooperate with you!

    LED Tube Light
    LED Bulb Light
    LED Downlight
    LED Spotlight
    LED Strip Light

    Have a lovely day! ^_^
    Regards,
    Terry Li ︱Marketing Director︱Skype:felix-guy
    Mail: [email protected] ︱URL:http://www.szodm.com/
    ——————————————————————————————-
    (LED OEM&ODM Manufacturer)
    Shenzhen Tengmei Technology Co., Ltd
    5/F, Block 20, Liuxiandong Industrial Zone, Xili Town, Shenzhen, 518000, China

  15. Our led tube can work with existing starter and inductive ballast.

    1. T8-3528SMD PSE,CE,ROHS (no need to remove the starter and inductive(Electromagnetic) ballast/LM79 Report)
    2.Dimmable & Non-Diammable LED Lamps_V1.0.pdf best price
    3. T5-3258SMD CE,ROHS (buid-in driver)

    Any product you are interested in, pls feel free to contact me, and let me know the detail spec you need.

    What else i can do for you,pls advise!

    Thank you and await your further enquiry.

    Best regards,
    Ander lee
    Sales Manager

    2012-03-05

    ——————————————————————————–

    Products1:LM79 tested / PSE/CE&ROHS/ ETL&CETL# 4001310 listed Dimmable&Rotatable and
    single pin T5/T8/T10 LED Tube //No need to remove the existing T8 starter and ballast

    Product2:COB LED Down lighting/led panel light/IP 65 Waterproof led tube/High power led bulb
    /SMD Circular LED Tube/T8-U Shaped Tube

    =======================================================================================================

    Rise-Lite Group Co., Ltd. (Shenzhen Bingxia Technology Co., Ltd.(Chinese name))
    Gongming Town, Guangming New District
    Shenzhen,518106, China
    Tel:+86-0755-89491179
    Fax:+86-0755-89491379
    Phone:+86-158-9985-9153
    Skype: ander_lee1
    Email: [email protected]
    http://www.rise-lite.com
    http://bingxia.en.made-in-china.com/
    ================================================================================

    Remark:
    our led tube can be Withstanding high Voltage,AC1500v for ETL Approved tube,AC3700v for CE Approved led tube.
    ========================================================================================

  16. http://gzcled.com is a good factory that producing led lighting,such as: led bulbs,led pannel light, led streets light.,led candel light and so on.you will got wholesale price and top quality,welcome inquiry and contact us:
    Kelly liu
    GZC LIGHT CO.,LTD.
    Add: 1F,BLOCK1,BAO’AN SONG JING GE,JINYANG DISTRICT,
    GUIYANG,GUIZHOU,550006 P.R. CHINA
    E-mail:[email protected]
    Website: http://WWW.GZCLED.COM
    TEL: 0086-851-4414950
    skype: kellyliu06301
    msn: [email protected]

  18. JDlight (Shenzhen) Technology Co.,ltd is founded in August 2009 and located in Dingfeng Hi-tech Industrial Park, Bao’an district, Shenzhen. It is 20 minutes from the airport by car.JDlights is high-tech enterprise which devoted to high power LED research, manufacturing and selling. Products are exported to over 20 countries in Europe and America.

    We can produced dimming led spotlight,dimmable led downlights,dimmable led bulbs, dimmable led panel light.JDlights manages to do better than customer’s request and be more competitive than our competitors.
    Dimmable LED Lighting,RGB LED,DMX LED Lights factory
    E-mail:[email protected]
    ADD:2F,A5 Dingfeng Hi-tech Industrial Park Industrial Zone,Fuyong Town, Bao’an District, Shenzhen, GuangDong, China
    Website: Dimmable LED Lighting factory
    TEL: 86-0755-27343172
    skype: jdlights.org
    msn: [email protected]

  20. Hi, paul,

    Good day!

    We are LED lighting manufacturer,and we have researched & designed some new product.

    If you are interested in, I ‘ll send you our catalogue.

    Thanks for your valuable time.

    Regards.

    chris
    Shenzhen Sunlight Lighting Limited
    3/F,NO.5 Building,Yangtaishan Industrial Zone,Guantian Community,Shiyan Street,Bao’an District,Shenzhen city, Guang Dong province, China
    Tel: 0755-27626258 Fax: 0755-27626259 SKYPE:sunlightsale08
    Mobile Phone: 18672480362 Email: [email protected] Website: http://www.sz-sunlight.com

  22. Dear Sir or Madam:

    Shenzhen Senruite Technology Co., Ltd., located in Shenzhen of South China – one of the biggest manufacturer base, is an innovative high-tech enterprise with research & development, production and marketing on LED Lighting since 2006 and auto car remote since 2001. For over a decade, we have been insisting the market-oriented, the customer-focused and the quality first as the fundamental. Our R&D specialist, on average over 15 years of experience in the industry, can always develop out new products that actually meet the market requirement ahead.
    Our main product line covers: car remote controller, automotive LED applications, GX53 lamp, LED Flood Light, LED outdoor light, LED Ceiling Lamp, LED street light, LED garden light and LED High Bay Light, LED Tube 2G11, etc. Most of them have the original patent designed and CE & Rohs etc. certificated. With the support from skillful workers at least over 5 years and strict quality control system, SRT has enjoyed good reputation in this industry and continue offering the best and professional service for our customers.
    Both OEM and ODM projects are welcome, let us be your reliable supplier!

    So if u are interested in our products, Please feel free to contact us at the following information

    Company name: Shenzhen Senruite Technology co., Ltd
    Company website: http://www.srt-ledlight.com
    Address : No.4 Building.Huasheng industrial area. dalang Longhua Town, Shenzhen China,
    Zipcode: 518000
    Email: [email protected]
    Tel: 0086 755 29534848
    Fax: 0086 755 61565501
    Mob: 008613049441693
    Skye: srtledlight2
    MSN: [email protected]

  25. Hi, this is Gillian from Shine Technology Limited. We supply high quality led lights(CE RoHS approved with three years warranty), such as led bulbs, led penal lights, led spot lights and together with waterproof led power supplies. If any interest, pricelist is available upon request^ _ ^!

    Gillian

    Shine Technology Ltd
    TEL: 86-755-89335200
    FAX: 86-755-84416990
    Email: [email protected]
    Website: http://www.shine-technology.com

    5F/Bldg I, Creative Industrial Park, Bantian,

    Longgang District, Shenzhen City, China
    Zip: 518129

  26. Dear Sir,
    I am lily from xinyang chuangyi electronic technology company, located in Shenzhen, China. Light in the box is our customer and has cooperated with us for 4 years.
    Our main products include:
    Spotlight, ceiling light, down light, LED bulb, LED candle, Flood light, par light, panel light
    Xinyang chuangyi (shenzhen) Electronic technology company ltd
    “Aim to produce and export good quality LED lights world widely”
    http://xinyangchuangyi.en.alibaba.com
    Tel: 86-755-28708356
    Email: [email protected]
    Add:Room1505, Unit 8B,Kangqiao Garden, Buji Town,Longgang District,Shenzhen,GD,China.518114

  27. Dear sir or madam,

    This is Steele Dong from Apollux who is manufacturing and exporting LED lights worldwide for 7 years. Main products are Panel Light, Downlight, Flood Light, tubes and bulbs etc. We have CE, Rohs, UL, SAA, SASO certified. The wide voltage transformer enable lamps to be used universal.

    Look forward to your inquiry!
    Thx,
    Steele Dong

    Email: [email protected]
    Tel: 0086 755 23032335
    Web: http://www.apollux.cn

  28. GTD Lighting is a led light manufacturer located in Shenzhen, China.

    The advantages of our company are as follows:
    1.6 years experience in this area, and our boss majors in led shape design and our research departments is made of more than 8-12 years experienced engineers.We have more than 5 engineers.
    2.GTD Lighting is a led driver manufacturer.especially dimmable philips NXP driver.Here is our websites which sell drivers:
    http://gtdlighting123.1688.com/ Our driver got great fame in chinese mainland markets and it also pse, ce, Fcc, Tuv,UL approval.

    For the dimmable products, we use philips NXP IC , rubycon capacitor and Uniohm resistors for the driver. It is ce, rohs, tuv, pse,fcc and ul approval with the pf above 0.9. it is dimmable starting from 0ma-300ma(0-100%dimmable).and for our drivers, we also use Four-layer board instead of two-layers board in the markets which have better heat dissipation. which can make sure the longer lifespan of the driver. It is compatible with a variety of Triac dimmers. such as Lutron, Leviton,Clipsal,Panasonic ,Schneider, Toshiba. and it works well both for Leading and trailing edge dimmers.

    Welcome to visit our websites: http://www.gtdlights.com. or add my skype: gtdlights02 for online service.

  29. Yes,
    Many suppliers quote 50,000 life span, this is a theoretical life span and without the correct components and quality, it is unlikely that this life cylcle will be acheived.
    Thank you so much .

Leave a Reply

Your email address will not be published. Required fields are marked *