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Crompton Dynaray 9W vs 12W LED Bulb Buying Guide
Verified 2026-09-05 · By VUKAR Editorial Team
Compare these two Cool Day Light bulbs. Choose the light output first, then check the fitting.
Vukar Automation compares Crompton Dynaray 9W and 12W bulb choices. Check light output along with the watt rating.
- Need the listed 945 lm output? Check the 9 W variant.
- Need the listed 1260 lm output? Check the 12 W variant.
- Both use B22 holders. Confirm your holder before ordering.
- Already happy with your room light? Match its lumens, not just its watts.
Take one photo before shopping
- Photograph the old bulb's printed label.
- Note the holder, wattage and colour name.
- Find the lumen number on its box or model page.
- Measure the space inside the shade.
- Write down how many hours the light stays on.
What does Dynaray mean?
- Dynaray is Crompton's series name, not a unit of brightness.
- 9 W and 12 W tell you power use.
- B22 identifies the holder type. Match it exactly.
- Cool Day Light describes the light colour. It does not mean extra cooling.
Compare Dynaray 9 W and 12 W Cool Day Light bulbs
Crompton Dynaray bulb variants to compare
Two exact brand-listed variants, not a ranking. Official pages provide buying routes; seller stock and final price still need checking.
Crompton
9W B22 Dynaray LED Bulb
Exact model/variant: Dynaray — 9 W — B22 — Cool Day Light
Consider when its listed output meets your need.[S2]
- 945 lm listed
- B22 holder
- Cool Day Light variant
Price: Open the exact model and use its buying route. Confirm pack, seller and current price.
Seller: Crompton official India website · checked 2026-09-05
Check current price and stockCrompton
12W B22 Dynaray LED Bulb
Exact model/variant: Dynaray — 12 W — B22 — Cool Day Light
Consider when you need the higher listed output.[S3]
- 1260 lm listed
- B22 holder
- Cool Day Light variant
Price: Open the exact model and use its buying route. Confirm pack, seller and current price.
Seller: Crompton official India website · checked 2026-09-05
Check current price and stockMore light is not the same as better value
- The 12 W listing gives 315 lm more output. It also uses 3 W more power.
- Both listed pairs work out to 105 lm per watt: divide lumens by watts.
- So these are different output choices, not proof that one is more efficient.
- Try one bulb in the actual room before buying a full set.
What the words on the box mean
| Word | Simple meaning | Your check |
|---|---|---|
| Lumens (lm) | Amount of light leaving the bulb | Match the output you need[S1] |
| Watts (W) | Power used while on | Compare after matching brightness[S1] |
| Colour temperature (K) | How warm or cool white light looks | Match nearby lights[S5] |
| CRI | How colours look under the light | Ask when colour matters[S5] |
| Rated life | A rating, not a failure date | Read its basis and warranty separately[S4] |
What does the extra 3 W cost?
- Example only: one bulb, 5 hours daily, 365 days, ₹8 per electricity unit.
- The 3 W difference uses 5.475 extra units yearly.
- That is about ₹44 extra per year in this example.
- Your rate and hours may differ. Enter your own numbers below.
- Do not call this waste if you need the higher light output.
Ask before you pay
- Is this the exact B22 Cool Day Light variant?
- Does the supplied box match the model and lumen number?
- Will it fit my shade and rated supply?
- Is this exact bulb suitable for my dimmer or closed fitting?
- What do delivery and the full pack cost?
- Who handles a warranty claim, and what invoice is needed?
Check the bulb holder before replacement
Turn the power off and let the old bulb cool before handling it.[S4]
Stop if the holder is loose, burnt or damaged. Ask an electrician to check it. Do not alter the fitting to make a bulb fit.[S4]
For a dimmer, closed shade or outdoor light, get the exact model's written suitability first. LEDs still need to lose heat.[S4]
Quick questions
Will the 12 W bulb suit every bigger room?
No. Light placement, shade and the job matter too. Use the listed lumens to shortlist, then try it in your room.[S1] [S4]
Does a one-year warranty mean it stops after a year?
No. Warranty coverage and useful life are different. Read the written terms; do not turn warranty years into a life promise.[S2] [S3] [S4]
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
- Learn About Brightness — ENERGY STAR; accessed 2026-09-05
- 9W B22 Dynaray LED Bulb — Crompton; accessed 2026-09-05
- 12W B22 Dynaray LED Bulb — Crompton; accessed 2026-09-05
- Learn About LED Lighting — ENERGY STAR; accessed 2026-09-05
- Lighting definitions: colour temperature and CRI — Wipro Consumer Lighting; accessed 2026-09-05
