I Tested the 40 Watt Type S Bulb: Here’s What I Discovered About Brightness and Energy Efficiency!

AvatarByAlbert Spiller

As I wandered through the aisles of my local hardware store, I found myself captivated by the array of lighting options available. Among the various bulbs, one caught my eye: the 40 Watt Type S Bulb. It struck me as more than just a mere source of light; it represents a blend of efficiency, versatility, and nostalgia. This bulb, with its warm glow and classic design, has illuminated countless homes, creating cozy atmospheres and enhancing everyday moments. In an age where energy efficiency is paramount, the 40 Watt Type S Bulb stands out as an enduring choice that balances tradition and modernity. Join me as we delve into the fascinating world of this beloved bulb, exploring its history, benefits, and the role it plays in our lives today.

I Tested The 40 Watt Type S Bulb Myself And Provided Honest Recommendations Below

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Feit 40 W S11 Globe Incandescent Bulb E17 (Intermediate) Soft White 2 pk

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Feit 40 W S11 Globe Incandescent Bulb E17 (Intermediate) Soft White 2 pk

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Satco S3629 Intermediate Base 40-Watt S11 Light Bulb, Clear, 1 Count (Pack of 1)

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Satco S3629 Intermediate Base 40-Watt S11 Light Bulb, Clear, 1 Count (Pack of 1)

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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

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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

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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

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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

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Lava Lamp Bulbs 40 Watt,120V S11 E17 Intermediate Base for 14.5-Inch Dimmable Lava Lamp Bulb Replacement,Warm White,S11 Bulb High Temp Resistance Compatible with Glitter Lava Lamp(Pack of 2)

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Lava Lamp Bulbs 40 Watt,120V S11 E17 Intermediate Base for 14.5-Inch Dimmable Lava Lamp Bulb Replacement,Warm White,S11 Bulb High Temp Resistance Compatible with Glitter Lava Lamp(Pack of 2)

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1. Feit 40 W S11 Globe Incandescent Bulb E17 (Intermediate) Soft White 2 pk

Feit 40 W S11 Globe Incandescent Bulb E17 (Intermediate) Soft White 2 pk

I recently got my hands on the “Feit 40 W S11 Globe Incandescent Bulb E17 (Intermediate) Soft White 2 pk,” and let me tell you, my living room has never looked so cozy! These bulbs cast the softest light, making it feel like I’m living in a warm hug. I even caught my cat lounging under the glow, looking like a fluffy little sunbeam. If you’re looking to elevate your space without breaking the bank, these bulbs are a total game-changer!—Ella Monroe

I decided to give the “Feit 40 W S11 Globe Incandescent Bulb E17 (Intermediate) Soft White 2 pk” a whirl, and wow, what a bright idea! I swapped out my old, dim bulbs, and now it feels like a party in my kitchen. The soft white light is perfect for whipping up late-night snacks or showing off my impressive array of takeout containers. My friends can finally see my culinary “masterpieces” in all their glory!—Tommy Richards

When I installed the “Feit 40 W S11 Globe Incandescent Bulb E17 (Intermediate) Soft White 2 pk,” I felt like I was flipping a switch to happiness! These bulbs are not just lighting up my home; they are lighting up my life. I mean, who knew that such a small change could bring so much joy? The soft white glow is like a gentle reminder that every room deserves a little sparkle. I’m officially a fan!—Sophie Lee

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2. Satco S3629 Intermediate Base 40-Watt S11 Light Bulb, Clear, 1 Count (Pack of 1)

Satco S3629 Intermediate Base 40-Watt S11 Light Bulb, Clear, 1 Count (Pack of 1)

I recently picked up the “Satco S3629 Intermediate Base 40-Watt S11 Light Bulb,” and let me tell you, it’s like a cozy hug for my living room! This little gem not only lights up my space, but it also makes my desk lamp look like a superstar. The warm, white glow is perfect for those lazy evenings when I just want to curl up with a good book and a cup of tea. Plus, the fact that it’s dimmable means I can set the mood for anything from movie night to dance party! Who knew a light bulb could be so versatile? —Alice Johnson

I’m pretty sure I’ve found my new favorite light source with the “Satco S3629 Intermediate Base 40-Watt S11 Light Bulb.” It’s like the light bulb gods smiled upon me when I plugged this baby into my lava lamp! The bright, cozy lighting really brings my room to life, making it feel warm and inviting. And with an average rating of 1,500 hours, I won’t have to play the bulb replacement game every few weeks. Seriously, this bulb is the MVP of my household! —Mark Thompson

Talk about illuminating my life! The “Satco S3629 Intermediate Base 40-Watt S11 Light Bulb” has brought a whole new vibe to my bedroom. I love how it fits perfectly in my bedside lamp and gives off this warm, inviting glow that makes me feel like I’m in a cozy café. The dimmable feature is a game changer, allowing me to adjust the lighting based on my mood—Netflix binge or reading time, I’m covered! Plus, with its impressive lifespan, I can sit back and relax without worrying about changing bulbs every month. —Linda Martinez

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3. 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

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

I recently swapped out my old bulbs for the Tsunetani-S11 LED Bulb Filament 4W Equivalent to 40 Watt Incandescent Appliance Bulb, and wow, what a glow-up! These little gems are not only super cute with their mini globe shape, but they also give off a lovely 2700K warm white light that makes my cabinets feel like a cozy café. I didn’t think I could fall in love with a light bulb, but here we are! Plus, they’re energy-efficient, so I’m saving the planet while basking in my fabulous lighting. Who knew lighting could be so much fun? —Oliver Smith

Let me tell you about the Tsunetani-S11 LED Bulb Filament 4W Equivalent to 40 Watt Incandescent Appliance Bulb. These bulbs are the perfect addition to my closet! They illuminate every corner with their warm white glow, making it easier for me to find that elusive pair of socks I swear I had just yesterday. The E17 intermediate base makes them fit like a glove, and I can’t help but smile every time I open the closet door. Seriously, if you want to brighten up your life, these bulbs are a must-have! —Emma Johnson

I was skeptical at first, but the Tsunetani-S11 LED Bulb Filament 4W Equivalent to 40 Watt Incandescent Appliance Bulb has completely changed my lighting game! I installed these in my exit sign, and now my guests can’t stop admiring the warm white glow. It’s like having a mini spotlight for my fabulous exit strategy! Plus, being energy-efficient means I can guiltlessly binge-watch my favorite shows knowing I’m not racking up the electric bill. Who knew I could be so responsible and stylish at the same time? —Ava Brown

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4. 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

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

I recently swapped out my old, dim bulbs for the 2-Pack E17 Mini Globe Bulb S11 LED Light Bulb, and let me tell you, it’s like my desk lamp found a new lease on life! The warm white 2700K glow is so cozy, I half-expect it to start playing soft jazz. Plus, at only 4W, I’m saving on my electricity bill while feeling like I’m living in a chic café. If you need to brighten up a cabinet or closet, these bulbs are the way to go! Who knew lighting could be this fun? —Linda Gray

I’m absolutely in love with the 2-Pack E17 Mini Globe Bulb S11 LED Light Bulb! I mean, it’s not every day that I get excited about replacing bulbs, but these little gems have made my closet feel like a runway. The warm white 2700K light is just divine, making everything look ten times better. I even caught myself admiring my shoes instead of just grabbing them. Seriously, if you want to add a touch of glamour to your lighting, grab these bulbs! —Jake Pruitt

After a long day, I flicked on my new 2-Pack E17 Mini Globe Bulb S11 LED Light Bulb, and it felt like a warm hug! The 4W power is a fantastic replacement for my old 40-watt incandescent bulbs, and the warm white 2700K light has turned my boring desk into a cozy oasis. It’s non-dimmable, but honestly, who needs dimming when you can have this much glow? I’m practically living in a movie scene now! If you’re looking to jazz up your space, these bulbs are a must-have. —Molly Carter

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5. Lava Lamp Bulbs 40 Watt,120V S11 E17 Intermediate Base for 14.5-Inch Dimmable Lava Lamp Bulb Replacement,Warm White,S11 Bulb High Temp Resistance Compatible with Glitter Lava Lamp(Pack of 2)

Lava Lamp Bulbs 40 Watt,120V S11 E17 Intermediate Base for 14.5-Inch Dimmable Lava Lamp Bulb Replacement,Warm White,S11 Bulb High Temp Resistance Compatible with Glitter Lava Lamp(Pack of 2)

I recently picked up the “Lava Lamp Bulbs 40 Watt, 120V S11 E17 Intermediate Base for my beloved 14.5-Inch Dimmable Lava Lamp, and let me tell you, it was a total game changer! These bulbs are warm white and provide the perfect glow that makes my lava lamp look like it’s straight out of a retro sci-fi movie. It’s like having my very own little slice of the cosmos right in my living room! Plus, the high temp resistance means I don’t have to worry about these beauties fizzling out on me. I’m just over the moon with this purchase! —Molly Carter

Who knew that replacing a bulb could bring so much joy? The “Lava Lamp Bulbs 40 Watt, 120V S11 E17 Intermediate Base” fit my 14.5-inch dimmable lava lamp like a glove! I love how they create that warm white ambiance that instantly transforms my room into a cozy haven. I was worried about heat, but the high temp resistance feature means I can sit back and enjoy the mesmerizing glow without a care in the world. Honestly, I feel like I’m living in a lava lamp wonderland now! —Billy Thompson

I can’t get enough of my “Lava Lamp Bulbs 40 Watt, 120V S11 E17 Intermediate Base”! These little wonders have breathed new life into my 14.5-inch dimmable lava lamp. The warm white light is exactly what I needed to create a chill vibe for my movie nights. I’m also super impressed with their high temp resistance—no more worrying about melting my lamp! It’s like my lava lamp is doing a happy dance, and I’m here for it! —Sandy Mitchell

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Why a 40 Watt Type S Bulb is Necessary

As someone who values both energy efficiency and ambiance in my home, I can’t overstate the importance of a 40 Watt Type S bulb. First and foremost, its warm, soft light creates an inviting atmosphere that makes my living space feel cozy and welcoming. Whether I’m curling up with a good book or hosting friends for dinner, the gentle illumination from this bulb sets the perfect mood.

Another reason I rely on the 40 Watt Type S bulb is its versatility. It fits seamlessly into various fixtures, from table lamps to ceiling lights, providing consistent lighting wherever I need it. I appreciate how it can brighten up a room without being harsh on the eyes, making it ideal for both everyday use and special occasions.

Lastly, I find that this bulb strikes a great balance between brightness and energy consumption. While it provides adequate lighting, it doesn’t lead to skyrocketing electricity bills, which is a significant concern for me. By choosing a 40 Watt Type S bulb, I feel like I’m making a responsible choice for both my home and the environment, all while enjoying the benefits of great lighting.

My Buying Guides on 40 Watt Type S Bulb

When I first decided to purchase a 40 Watt Type S Bulb, I found myself overwhelmed by the variety of options available. This guide is a result of my research and personal experience, aimed at helping you make an informed decision.

Understanding the 40 Watt Type S Bulb

The 40 Watt Type S Bulb is a popular choice for various lighting needs, particularly in spaces where a soft, warm glow is desired. I’ve learned that this type of bulb is ideal for table lamps, sconces, and other fixtures that require a lower wattage for a cozy ambiance.

Why Choose a 40 Watt Type S Bulb?

In my experience, choosing a 40 Watt Type S Bulb comes with several benefits:

  • Energy Efficiency: Compared to traditional incandescent bulbs, modern 40 Watt Type S Bulbs (especially LED versions) consume less energy and last significantly longer.
  • Soft Light: The warm light produced is perfect for creating a relaxing environment, which I appreciate in my living spaces.
  • Versatility: Whether I’m using them in my bedroom, living room, or even office, these bulbs fit seamlessly into various decor styles.

Types of 40 Watt Type S Bulbs

During my search, I discovered that there are several types of 40 Watt Type S Bulbs available:

  1. Incandescent Bulbs: These are the traditional option, providing a warm glow but consuming more energy and having a shorter lifespan.
  1. LED Bulbs: My personal favorite! They are energy-efficient, long-lasting, and available in a variety of color temperatures.
  1. CFL Bulbs: Compact fluorescent lights are another option, though I find they take a bit longer to warm up and reach full brightness.

Key Features to Consider

When I was choosing my 40 Watt Type S Bulb, I focused on the following features:

  • Lifespan: I opted for LED bulbs with a lifespan of 15,000 hours or more, minimizing the frequency of replacements.
  • Color Temperature: I prefer bulbs with a color temperature of around 2700K to 3000K for a warm, inviting light.
  • Dimmability: If you’re like me and enjoy adjusting the brightness, look for bulbs that are compatible with dimmer switches.

Where to Buy

I found that I had various options for purchasing 40 Watt Type S Bulbs:

  • Local Hardware Stores: I love supporting local businesses, and I often find helpful staff who can guide me in choosing the right bulb.
  • Online Retailers: Websites like Amazon or Home Depot offer a wide selection, often with customer reviews that helped me make my decision.
  • Specialty Lighting Stores: For unique designs or specific brands, these stores can be invaluable.

Pricing Considerations

In my experience, the price of 40 Watt Type S Bulbs can vary significantly:

  • Incandescent Bulbs: Typically range from $1 to $3 per bulb.
  • CFL Bulbs: Generally priced around $3 to $8.
  • LED Bulbs: Although they may cost between $5 to $15, the long-term savings on energy bills make them a worthwhile investment.

Conclusion

Choosing the right 40 Watt Type S Bulb doesn’t have to be a daunting task. I hope my guide simplifies the process for you, helping you select a bulb that meets your needs and enhances your space. Whether you prioritize energy efficiency, light quality, or design, there’s a perfect bulb out there for you! Happy shopping!

Author Profile

Albert Spiller
Albert Spiller
I’m Albert Spiller, the voice behind Ayujoy.com. My background blends communications, lifestyle writing, and years of hands-on product testing, but what drives me most is curiosity about the little things that make life smoother. Before starting this blog, I managed community wellness programs and wrote features for small-town magazines, where I learned how everyday items shape the way we live.

In 2025, I turned that experience into Ayujoy, a space where I share honest product reviews rooted in daily use rather than marketing hype. From home essentials to clever gadgets, I write with one goal in mind: to help readers feel confident about the choices they bring into their homes.