Best 4-Prong Fluorescent Bulbs for Easy Replacements
When fixtures require a 4-pin G24q or GX24q base, finding reliable, energy-efficient replacements is essential. This guide highlights five top-rated 4-pin fluorescent bulbs that fit commonly used compact fixtures, emphasizing compatibility, color temperature, and longevity. Each section includes a direct product link and key features to help you compare options quickly. A summary table at the start provides a quick snapshot of the selected products.
Product Summary
| Product | Base Type | Wattage / Type | Color Temperature | Approx. Life |
|---|---|---|---|---|
| KOR 13W CFL Light Bulb (4-Pack) – G24Q-1 | G24Q-1 4-Pin | 13W Double Tube CFL | 4100K Cool White | Not stated |
| KOR PL26W/3U/4P/5000K – GX24Q-3 | GX24Q-3 4-Pin | 26W Triple Tube CFL | 5000K Daylight | Long life |
| Circle 18W 4-Pin G24q-2 | G24q-2 4-Pin | 18W Double Tube CFL | 3500K Warm White | Long life |
| KOR 4-Pack K20788 – GX24q-3 | GX24q-3 4-Pin | 26W Triple Tube CFL | 841 (Cool White) | Long life |
| SYLVANIA 20669 – 26W 4-Pin | 4-Pin Double Tube | 26W CFL | 4100K | 12,000+ hours |
KOR 13W CFL Light Bulb, 4-Pack – G24Q-1

KOR offers a pack of four 13-watt double-tube CFL bulbs designed for G24Q-1 4-pin sockets. These bulbs are intended as direct plug-in replacements for compatible fixtures, simplifying upgrades in kitchens, offices, and workspaces. The bulbs provide a bright neutral light with 4100K color temperature and a high color rendering index (CRI) of 82. This option is suitable where a cooler white light is preferred for task-oriented rooms.
Key considerations:
- Compatibility: 4-pin G24Q-1 sockets only; verify your fixture base before purchase.
- Brightness: 82 CRI supports clear color accuracy for general tasks.
- Color: 4100K neutral white, good for workspaces and kitchens.
KOR Pack of 4 PL26W/3U/4P/5000K – GX24Q-3

This 4-Pin bulb uses the GX24Q-3 base and delivers 26 watts of compact fluorescent light with a 5000K daylight color temperature. The 50,000-hour class lifespan and higher wattage make this suitable for areas requiring brighter, cooler light for detailed tasks and visibility. It is designed for fixtures that specifically use GX24Q-3 sockets and will not interchange with other base types.
Key considerations:
- Base compatibility: GX24Q-3; confirm fixture socket matches exactly.
- Color: 5000K daylight for task lighting and clarity.
- Longevity: Longer operational life reduces maintenance intervals in busy spaces.
Circle (4 Pack) 18W 4-Pin G24q-2

Circle’s 18-watt CFL bulbs are designed for G24q-2 4-pin sockets and provide 18 watts of energy-efficient lighting with a warm 3500K color temperature. This option is a practical replacement for spaces that benefit from a softer warm white, such as living rooms, kitchens, or hospitality areas. It claims easy direct replacement comparable to standard 18W CFL lamps.
Key considerations:
- Base: G24q-2 4-Pin; confirm fixture compatibility.
- Color: 3500K warm white, suitable for cozy settings.
- Energy savings: Lower wattage with decent brightness for ambient lighting.
KOR 4-Pack K20788 – GX24Q-3, 4-Pin

This 4-pack features 26-watt triple-tube CFL bulbs with a GX24Q-3 base and a cool white Kelvin rating of 4100–841 referenced in product materials. The base and performance target provide a bright, crisp light suitable for task and general lighting in kitchens, offices, and workspaces. As with other GX24Q-3 bulbs, ensure base compatibility with your fixture.
Key considerations:
- Base: GX24Q-3; precise base match required.
- Color: 4100K cool white for clear visibility.
- Durability: Longer life compared to traditional incandescent equivalents.
SYLVANIA 20669 26W 4-Pin Double Tube – 4100K

SYLVANIA’s 26W, 4-pin double-tube bulb delivers 810–840 lumens with a 4100K color temperature. This option is designed for reliable performance in standard fixtures using 4-pin sockets and is marketed for longer life, commonly cited as up to 12,000 hours. It is suitable for kitchens, offices, or garages where bright, neutral light is desired.
Key considerations:
- Base: 4-pin double-tube compatibility for G24q or GX24q sockets as specified.
- Color: 4100K neutral white for general tasks.
- Life: Long-lasting operation reduces replacements.
Buying Guide: Key Purchase Considerations
- Base compatibility: Confirm the fixture base (G24Q-1, G24q-2, GX24Q-3, etc.) matches exactly. Mismatched bases will not fit ballast or socket.
- Color temperature: Choose between warm (approx. 2700–3500K), neutral (4100K), and daylight (5000K–6500K) depending on room use and ambiance.
- Wattage and lumens: Higher wattage typically means brighter light; consider lumens for actual brightness and energy use. Check fixture rating to avoid overloading.
- Life expectancy: Longer lifespans reduce maintenance. Note hours like 10,000–12,000+ hours for CFLs, and factor in replacement costs over time.
- Installation: Most 4-pin CFLs are plug-in replacements; ensure you won’t need ballast changes or rewiring.
- Energy efficiency: CFLs use less energy than incandescent bulbs but compare with LED options if compatible with your fixture and ballast.
- Fixture suitability: Some fixtures require specific pin configurations (e.g., GX24Q-3 vs. GX24Q-1). Verify exact model compatibility with the fixture’s original bulb.
- Color rendering: A higher CRI (near 80–82) helps colors appear more natural; consider this for kitchens, workspaces, and healthcare settings.
- Maintenance and availability: Stock availability and replacement packs (e.g., 4-packs) can influence total cost and downtime.