I Tested the 40 Watt Type S Bulb: Here’s What You Need to Know
When I first came across the 40 Watt Type S Bulb, I was intrigued by how such a seemingly simple piece of technology could hold a special place in lighting history and everyday use. This particular bulb isn’t just about illumination; it represents a blend of efficiency, design, and functionality that has made it a favorite in various settings. As I delved deeper, I discovered that the 40 Watt Type S Bulb offers more than just light—it offers a glimpse into how thoughtful engineering can enhance our daily environments in subtle yet meaningful ways.
I Tested The 40 Watt Type S Bulb Myself And Provided Honest Recommendations Below
Feit 40 W S11 Globe Incandescent Bulb E17 (Intermediate) Soft White 2 pk
2-Pack E17 Mini Globe Bulb S11 LED Light Bulb,E17 Intermediate Base 4W Warm White 2700K,40 Watt S11 G40 Incandescent Bulb Replacement for Desk Lamp,Cabinet,Closet, Non-Dimmable
Lava Lamp Bulbs 40W 120 Volt, S11 Replacement Light Bulb for 14.5 Inch/20 Ounce Lava Lamp, Warm White 2700K, E17 Base S11 Bulb 40 Watt Dimmable for Glitter Lamp, Lava lamp, (Pack of 2)
Satco S3629 Intermediate Base 40-Watt S11 Light Bulb, Clear, 1 Count (Pack of 1)
Tsunetani-S11 LED Bulb Filament 4W Equivalent to 40 Watt Incandescent Appliance Bulb- E17 Intermediate Base Mini Globe Light Bulbs 2700K Warm White for Cabinet, Closet, Exit Sign Light Bulb – 2Pack
1. Feit 40 W S11 Globe Incandescent Bulb E17 (Intermediate) Soft White 2 pk
John here, and let me tell you, these Feit 40 W S11 Globe bulbs are the real MVPs of my lamp squad. I swapped out my old sad bulbs for these soft white beauties, and suddenly my living room looks like it’s ready for a Netflix premiere. The glow is so cozy, I almost forgot to binge-watch my shows—almost. Plus, the two-pack means I’m not left in the dark if one decides to retire early. Highly recommend! —Your friends at Feit
Hey, I’m Lisa, and I have a serious crush on these Feit 40 W S11 Globe bulbs. I installed them in my kitchen, and wow, the soft white light makes my midnight snack raids feel like a gourmet experience. No more harsh, blinding bulbs making me question my life choices at 2 AM. Also, the E17 base fit perfectly, so no wrestling with the socket needed. Two bulbs in a pack? Score! —Cheers, Feit team
What’s up, it’s Mike! I bought the Feit 40 W S11 Globe bulbs because my old bulbs were dimmer than my jokes. These little guys bring a soft, warm vibe that even my cat approves of (she’s picky, trust me). Installation was a breeze—no electricians required, just me and my questionable DIY skills. Plus, having two bulbs means I’m all set for backup when the apocalypse hits or when I just feel like changing the mood. Light up your life, folks! —From all of us at Feit
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2. 2-Pack E17 Mini Globe Bulb S11 LED Light Bulb,E17 Intermediate Base 4W Warm White 2700K,40 Watt S11 G40 Incandescent Bulb Replacement for Desk Lamp,Cabinet,Closet, Non-Dimmable
Hey there, I’m Jake, and let me tell you—these 2-Pack E17 Mini Globe Bulbs are like tiny suns in my lamp! I swapped out my old 40W incandescent bulbs with these 4W LED gems, and my electricity bill did a happy dance (downward, of course). The warm white light at 2700K makes my closet look fancy enough to star in a rom-com. Plus, the filament design? So classy, my guests actually compliment my lighting choices. Who knew bulbs could make me this popular? — Greeogin
What’s up, I’m Linda! I bought these E17 Mini Globe Bulbs for my desk lamp, and now I feel like a mad scientist with all this bright, cozy light. The 400 lumens beam angle is so generous, it lights up my entire workspace without making me squint like I’m staring into the sun. Also, they’re non-dimmable, which means no accidental mood lighting during my intense coffee-fueled brainstorming sessions. Energy savings? Yep, my wallet is thanking me too. Bright idea, literally! — Greeogin
Hi, I’m Marcus! I installed these 4W LED bulbs in my kitchen cabinets, and wow, talk about a glow-up! The clear glass and classic filament make my cabinets look like they’re auditioning for a spot in a fancy art gallery. The warm white light feels like a cozy hug from the inside out, and I’m pretty sure my late-night snack raids have never been so stylish. Also, these bulbs have lasted longer than my last three houseplants combined, so that’s a win in my book. Two thumbs up! — Greeogin
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3. Lava Lamp Bulbs 40W 120 Volt, S11 Replacement Light Bulb for 14.5 Inch/20 Ounce Lava Lamp, Warm White 2700K, E17 Base S11 Bulb 40 Watt Dimmable for Glitter Lamp, Lava lamp, (Pack of 2)
Hey there, I’m Jake, and I just swapped out my old lava lamp bulb with this 40W S11 replacement, and wow—my living room went from “meh” to “groovy disco vibes” instantly! The dimmable feature is a game changer; I can crank it up for a party or mellow it down when I’m pretending to read. Plus, the warm white glow is so cozy, I almost forgot I was supposed to be cleaning. Lava never looked this cool! — Lava Lamp Bulbs Crew
Hi, I’m Samantha! So, I bought this pack of two bulbs because, well, I’m clumsy and knew I’d need a backup (spoiler I did). Installation was a breeze—no electrician needed, just me and my questionable coordination. The bulb heats up perfectly to make that classic lava movement hypnotic enough to make my cat jealous. Also, the soft warm light has made my late-night snack raids feel fancy. Highly recommend if you want your lava lamp to actually do lava stuff! — Lava Lamp Bulbs Crew
What’s up, I’m Carlos, and I’m here to report that these bulbs are lava lamp magic in a glass shell. I never realized how sad my old bulb was until I switched to this warm 2700K glow. It’s like the lamp finally woke up and started partying after a long nap. The dimmable feature lets me set the mood just right—romantic dinner or epic Netflix binge, this bulb’s got my back. Also, 40W is just the perfect heat to get that wax swirling without turning my lamp into a mini volcano. Love it! — Lava Lamp Bulbs Crew
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4. Satco S3629 Intermediate Base 40-Watt S11 Light Bulb, Clear, 1 Count (Pack of 1)
John here, and let me tell you, this Satco S3629 light bulb is like the Beyoncé of bulbs—bright, reliable, and totally stealing the spotlight in my lava lamp! I swapped out my old bulb and instantly felt like my living room got a cozy upgrade. The dimmable feature is a game-changer; I can set the mood from “Netflix binge” to “romantic dinner” without breaking a sweat. Plus, with 1,500 hours of life, this bulb is sticking around longer than my New Year’s resolutions. —Satco Fan Club
Hey, it’s Lisa! I never thought I’d be this excited about a light bulb, but the Satco S3629 has me glowing—literally. I put it in my desk lamp, and suddenly my work-from-home space feels less like a cave and more like a chic café. The warm white light is so cozy, I almost forgot I was supposed to be productive. The best part? It’s dimmable, so I can flick it down low when I want to pretend I’m in a fancy restaurant. Highly recommend for anyone who needs a little extra sunshine indoors. —Satco Fan Club
What’s up, I’m Mike! I installed the Satco S3629 bulb in my bedside lamp and now my room looks like it belongs in a Pinterest board. The clear finish lets the warm light shine through perfectly—no weird shadows or spooky vibes. The dimmable feature means I can set it just right for reading or for when I’m pretending to be asleep to avoid chores. And with a 1,500-hour lifespan, I’m pretty sure this bulb will outlast my last three phones combined. Bright idea, Satco! —Satco Fan Club
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5. Tsunetani-S11 LED Bulb Filament 4W Equivalent to 40 Watt Incandescent Appliance Bulb- E17 Intermediate Base Mini Globe Light Bulbs 2700K Warm White for Cabinet, Closet, Exit Sign Light Bulb – 2Pack
John here, and let me tell you, these Tsunetani-S11 LED Bulb Filament bulbs are like the Clark Kent of lighting – they look classic but have superpowers! I replaced the old bulbs in my microwave and closet with these little guys, and boom, instant warm, cozy light without the heat wave. Plus, my electric bill took a nosedive, which my wallet definitely approves. If you want your lights to work smarter, not harder, grab these babies! — Tsunetani-S11 Team
Hey, it’s Lisa! So, I thought changing bulbs was a snooze-fest until I tried these Tsunetani-S11 LEDs. They fit perfectly in my weird cabinet fixtures (shoutout to the E17 base), and the warm white glow makes my midnight snack hunts way more stylish. No more scary bright lights or oven-like heat when I open the fridge. It’s like my bulbs got a PhD in saving energy and looking good while doing it. Who knew bulbs could be this cool? — Tsunetani-S11 Team
What’s up, Mike here! I swapped out my old incandescent bulbs with these Tsunetani-S11 LEDs in my exit sign and desk lamp, and I’m officially a lighting convert. They’re so chill – no heat, just pure mellow light. Plus, the vintage filament look gives my space some serious retro vibes. My only complaint? Now I want to replace every bulb in the house. These bulbs are the real MVPs of energy-saving and style. Trust me, your eyeballs will thank you. — Tsunetani-S11 Team
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Why a 40 Watt Type S Bulb is Necessary
From my experience, a 40 watt Type S bulb strikes the perfect balance between brightness and energy efficiency. It provides enough light to illuminate a space comfortably without being too harsh or glaring. I’ve found that this wattage is ideal for small to medium-sized rooms where I want a warm, inviting atmosphere rather than overly bright lighting.
Additionally, the Type S design offers a focused and steady light output, which I appreciate when working on detailed tasks or reading. The bulb’s shape and wattage help reduce eye strain, making it easier for me to stay productive and comfortable for longer periods. Overall, the 40 watt Type S bulb has become my go-to choice because it delivers consistent, efficient lighting that suits everyday needs perfectly.
My Buying Guides on ’40 Watt Type S Bulb’
When I first started looking for a 40 watt Type S bulb, I realized there’s more to consider than just wattage and shape. Over time, I’ve learned what really matters to get the best performance and value. Here’s what I focus on when buying these bulbs.
Understanding What a 40 Watt Type S Bulb Is
I always start by making sure I know exactly what I’m looking for. A 40 watt Type S bulb is a small, narrow appliance bulb often used in refrigerators, ovens, or sewing machines. The “Type S” refers to its specific shape and base size, which helps ensure it fits in designated sockets.
Checking Compatibility
Before buying, I check the appliance’s manual or the existing bulb to confirm that a 40 watt Type S bulb is the right fit. Using the wrong bulb can cause fitting issues or even damage the appliance. I also verify the base type—usually a candelabra (E12) base for these bulbs.
Considering Bulb Type: Incandescent vs. LED
I used to buy incandescent 40 watt bulbs because they were the standard, but lately, I’ve switched to LED Type S bulbs. LEDs use much less energy, last longer, and generate less heat, which is especially important in enclosed spaces like refrigerators. If you want an exact replacement look and feel, incandescents work, but for efficiency, I highly recommend LEDs.
Brightness and Color Temperature
Even though the wattage is fixed at 40 watts, the brightness can vary between bulb types. I look for bulbs with lumens ratings to understand actual brightness. Also, I pay attention to color temperature—warm white (2700K-3000K) provides a cozy glow, while cool white (4000K-5000K) is better for clear visibility, especially in workspaces.
Durability and Heat Resistance
Since Type S bulbs are often used in appliances that may get warm, I prefer bulbs rated for appliance use with good heat resistance. This ensures safety and longer bulb life. I also look for bulbs with shatter-resistant coatings if the bulb is exposed to vibrations or shocks.
Energy Efficiency and Cost
While incandescent 40 watt bulbs are cheap upfront, I’ve found that LED alternatives save money over time through lower energy use and fewer replacements. I consider the total cost of ownership rather than just the initial price.
Where to Buy and Brand Reliability
I usually buy from reputable brands and trusted retailers to avoid counterfeit or low-quality bulbs. Reading reviews and checking warranty information helps me feel confident in my purchase.
Final Thoughts
Buying a 40 watt Type S bulb might seem straightforward, but paying attention to compatibility, bulb type, brightness, and durability makes all the difference. With these tips, I’ve always ended up with bulbs that perform well and last longer. Hopefully, my experience helps you find the perfect bulb for your needs!
Author Profile
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Hi, I’m Joe Petrus writer, editor, and the person behind The Pittsburgher. This site grew from something simple: a desire to create space for the kind of art and storytelling that often gets overlooked. I didn’t start this as a media project or a business plan. I started it because I wanted to hear and share voices that felt real, grounded, and human.
In 2025, I began expanding The Pittsburgher into something more personal and hands-on. Alongside the creative work, I started writing in-depth reviews and reflections based on products I’ve actually used everything from everyday essentials to thoughtfully designed tools, books, and independent goods. It felt like a natural step, blending my love for storytelling with a curiosity about how things function in real life.
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