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LED vs CFL Bulbs: A Practical Buying Guide
Verified 2026-09-05 · By VUKAR Editorial Team
Use your existing CFL label as the starting point. Compare two exact Crompton Dynaray Cool Day Light replacements: 9 W and 12 W, both B22.
- Match the old lamp’s lumens before comparing watts.
- Dynaray 9 W lists 945 lumens.
- Dynaray 12 W lists 1260 lumens.
- Neither option is a universal replacement for every CFL.
Read your old CFL first
- CFL means compact fluorescent lamp.
- Write its brand, full model code, watts and lumens.
- Check that its cap is B22 before using these examples.
- Keep a photo of the label or original box.
- If lumens are missing, find the exact manufacturer data. Do not guess from CFL watts.
- A pin-base CFL with separate control gear needs a different compatibility check.
Two exact LED replacement choices
Products you can evaluate
Exact-model examples, not rankings. Confirm stock, delivery, final price and written terms before purchase.
Crompton
Dynaray LED bulb
Exact model/variant: 9 W — B22 — Cool Day Light
Check against a 945-lumen replacement need.[S1]
- 945 lm listed
- 9 W input
Price: Use official buying routes; verify current exact variant, pack count and price.
Seller: Crompton official India website · checked 2026-09-05
Check current price and stockCrompton
Dynaray LED bulb
Exact model/variant: 12 W — B22 — Cool Day Light
Check against a 1260-lumen replacement need.[S2]
- 1260 lm listed
- 12 W input
Price: Use the official Buy From Store route; verify exact variant and current price.
Seller: Crompton official India website · checked 2026-09-05
Check current price and stockMatch light, not the old watt number
- Lumens describe the amount of light. Watts describe electrical input.
- Compare the old CFL’s rated lumens with 945 and 1260.
- If 945 lumens is below your required output, do not choose 9 W only for its lower power.
- If 1260 lumens is more than you want, more light is not automatically useful.
- Compare in the same fitting. Shades and direction can change the light reaching your desk.
Check the fitting before the saving
- B22 names the cap, not every compatibility condition.
- Check physical size and room inside the shade.
- Ask whether the exact LED is allowed in an enclosed fitting.
- If a dimmer is fitted, ask for written compatibility.
- Match the desired light colour; Cool Day Light is the variant used here.
- Switch off and follow the fixture instructions when replacing a lamp. Get help if the fitting is damaged.
Enter your CFL, not a made-up baseline
- Use the real old CFL watt value.
- Enter 9 W or 12 W for the selected Dynaray.
- Use your bulb count, daily hours and electricity tariff.
- For replacing a working lamp, include the new LED cost in the decision.
- For a failed lamp, compare the actual purchase choices still available to you.
- Do not promise a fixed percentage saving without the exact old lamp and use pattern.
What the result can and cannot tell you
- The calculator can compare entered light output and estimate electricity cost.
- It cannot confirm that your old CFL still gives its original light output.
- It cannot certify fit, dimming or actual lifetime.
- Keep assumptions beside any payback result.
- A one-year warranty is not a claim that the bulb will fail after one year.
- Ask for the written cover rather than treating a life-hours claim as a guarantee.
Ask these before you pay
- Is this the exact wattage, B22 cap and Cool Day Light variant?
- Can I verify lumens on the delivered pack?
- Does it suit my shade, enclosure and dimmer?
- What is the price per bulb, including the pack count?
- What proof is needed for a warranty claim?
- Where can I hand over my old CFL for suitable recycling?
Plan the old lamp’s handover
- CFLs contain mercury, so avoid breaking the old lamp.
- Ask your local waste service or authorised recycler about lamp collection.
- Do not assume a US collection programme listed in the reference operates in India.
- This guide does not give broken-lamp cleanup instructions.
Quick questions
Is 9 W LED equal to every 15 W CFL?
No. Use the exact CFL lumen value. The 9 W Dynaray example lists 945 lumens.[S1] [S3]
Are these two LEDs equally bright?
No. Their listed outputs are 945 and 1260 lumens. Pick the light you need before calculating cost.[S1] [S2]
Where can I buy the examples?
Use Crompton’s official buying routes. Confirm the exact variant, current stock, pack size and destination price.[S1] [S2]
Why is no new CFL recommended?
This guide helps replace an existing CFL. It does not claim an unverified legacy CFL is currently available to buy.[S3]
This comparison covers only the listed models, criteria, sources, and verification date. Omission or missing public data is not a negative judgement about any brand.
References used for this guide
- Dynaray9W official India page — Crompton; accessed 2026-09-05
- Dynaray12W official India page — Crompton; accessed 2026-09-05
- Understanding brightness — ENERGY STAR; accessed 2026-09-05
- Understanding LED lighting — ENERGY STAR; accessed 2026-09-05
- CFL recycling and disposal — US Environmental Protection Agency; accessed 2026-09-05
