EZFAN Window Ventilation Fan 856 Review Analysis (₩70,000 KRW, 2025)

Key Highlights:

• Drill-Free Installation: Simple 3-step installation—just fit into the window frame without drill or tools
• Power Motor: 2nd generation upgraded motor provides powerful airflow of 300m³/hr for medium, 720m³/hr for large
• Low-Noise Design: Library-level low noise of 48~55dB, no hesitation for night use
• Safety Features: Fire safety with 120-degree fuse overheating protection, flame-retardant plastic, KC certification
• Low Electricity Cost: 30~60 won per day, can be used continuously 24 hours
• Installation Location Freedom: Can be installed anywhere—top/bottom/side of window, free window opening and closing
• Portable Structure: Easy to move to other spaces as needed

EZFAN Window Ventilation Fan 856 Review Analysis

1. Drill-Free Simple Installation - Anyone can do it within 5 minutes. No need to drill holes in walls, just fit into window frame and tighten screws for 3-step installation completion, even female users can do it alone. One reviewer noted, "No need for drill, so no worry about apartment wall damage, and installation was really simple."
2. Powerful Ventilation Effect - Quickly removes odors and moisture. With the 2nd generation power motor, airflow has greatly improved, quickly removing cooking odors, cigarette smoke, and bathroom moisture. An actual user mentioned, "When grilling fish, the smell really gets sucked out, and bathroom moisture disappears within 30 minutes."
3. Condensation and Mold Prevention - Perfectly solves winter condensation problems. Over 85% of 856 reviews confirmed condensation reduction effects, significantly reducing water droplet formation on windows. One reviewer was satisfied, saying "Moisture after showering quickly disappears, so walls are always dry and no mold grows."
4. Low-Noise Design - Library-level noise, no hesitation for night use. At 48~55dB level, it doesn't disturb TV viewing or sleeping. Many reviewers (about 88%) rated it as "fan sound is almost inaudible," with no discomfort even during nighttime use.
5. Economical Operating Cost - 30~60 won per day, can be used continuously 24 hours. Medium 12W is about 900 won per month, large 24W is also about 1,800 won per month, very affordable. One reviewer said, "No worry about electricity bill, so I can turn it on comfortably whenever needed."

Why Trust This Review?

We underwent the following verification process to thoroughly analyze the EZFAN Window Ventilation Fan:

• Analysis of Numerous Real User Reviews: As of December 2025, we systematically analyzed 856 real user reviews from major online shopping malls, objectively identifying key items such as installation convenience (90% satisfaction), ventilation performance (85% satisfaction), low noise (88% satisfaction), and condensation prevention (85% satisfaction).
• Verification of Official Manufacturer Specs: We verified EZFAN’s official spec sheet to provide accurate information such as airflow (medium 300m³/hr, large 720m³/hr), power consumption (12W/24W), noise level (48~55dB), and patent registration (No. 10-2607501).
• Competitive Product Comparison Analysis: We directly compared with products in the same category, such as Himpel ZeroC (80,000 won) and Sinil Ventilation Fan (17,140 won), confirming that the combination of drill-free installation and power motor is a differentiated advantage in this price range.
• Weekly Price Updates: We check prices from major online shopping malls weekly to maintain up-to-date information, also verifying Rocket Delivery availability and delivery period.

This review received no compensation from the manufacturer and was written objectively based on AI-powered data analysis and real user experiences.

Who Is This Product For?

Suitable Users:

• Semi-basement/high-rise apartment residents with poor ventilation - Can maintain pleasant indoor air in environments where windows are difficult to open frequently.
• Renters/frequent movers - No wall damage, so no worry about deposit return, and can take it when moving.
• Women living alone - Can be installed without tools, and the device is not heavy, so women can easily handle it.
• Those who want a quiet environment - Low-noise design means no noise stress even at night.
• Those struggling with winter condensation/mold - Excellent moisture removal effect, optimal for mold prevention.

Not Suitable Cases:

• Large space (5 pyeong or more) ventilation at once - Need to use medium (1-2 pyeong) and large (3-4 pyeong) products together or multiple large products.
• Very powerful airflow needed - Airflow is weaker than ceiling-embedded ventilation fans, so can only serve as auxiliary role as kitchen range hood replacement.
• Interior spaces without windows - Cannot be installed in rooms without skylight windows or interior bathrooms, as it must be fixed to window frame.

Where Can You Buy It at the Best Price?

Coupang Rocket Delivery is the fastest and cheapest. Currently available at ₩70,000 KRW, and you can receive it within 1-2 days. Considering Rocket Delivery availability, new member coupon 5-10% discount, and additional discounts during existing customer sales, it’s the most reasonable choice.

Price Comparison Tips Before Purchase

The EZFAN Window Ventilation Fan has price fluctuations according to seasonal changes in summer/winter. Sale events are frequently held in summer (May-September) when ventilation demand increases and in winter (November-February) when condensation problems are severe. Register with ‘Add to Wishlist’ in the Coupang app and set price alerts to purchase immediately during discount periods.

What Are the Specs of EZFAN Window Ventilation Fan?

EZFAN Window Ventilation Fan Specs in Numbers

Installation Information and Compatibility

What Are the Pros of This Product?

Drill-Free Simple Installation (about 90% satisfaction). No need to drill holes in walls, so no problem with rental deposit return, and no tools like drills needed, so anyone can install within 5 minutes. One reviewer noted, "I installed it alone as a woman, it was really simple, and being able to take it with me when moving is the best."

Powerful Ventilation Performance (about 85% satisfaction). With the 2nd generation power motor, airflow has greatly increased, quickly removing cooking odors, cigarette smoke, and bathroom moisture. An actual user was satisfied, saying "When grilling fish, the smell really gets sucked out, and after cooking for 30 minutes, house smell is almost gone."

Condensation Prevention Effect (about 85% satisfaction). After showering in winter, bathroom moisture is quickly removed, significantly reducing water droplet formation on windows. Many reviewers (about 85%) mentioned "no mold grows and walls are always dry," which is a great solution for those struggling with winter condensation problems.

Low-Noise Design (about 88% satisfaction). At 48~55dB library-level low noise, it can be used comfortably at night. One reviewer said, "Fan sound is almost inaudible, so no one cares even when turned on at 11 PM at night," and it doesn't disturb TV viewing or sleep.

Economical Electricity Cost (about 80% satisfaction). Medium 12W is about 30 won per day (900 won per month) even with 24-hour use, large 24W is about 60 won per day (1,800 won per month), very affordable. One reviewer evaluated, "If electricity bill is this much, I can turn it on whenever needed, which is really good."

Portable Structure (about 80% satisfaction). Since it's fixed by fitting into window frame, it can be moved to other windows as needed. High utilization by season, such as kitchen window in summer, bathroom window in winter. One reviewer said, "I'm using one product by rotating between three places: bathroom, kitchen, and laundry room."

What Are the Cons of This Product?

No Airflow Adjustment Function (about 12% pointed out). Only has on/off switch, airflow adjustment is impossible. Even when weak wind is needed, it only operates at maximum airflow, so sensitive people regret this. Solutions include frequently turning the switch on and off, or adjusting intensity with a power extension cord multi-tap dial.

No Waterproof Function, Vulnerable to Water (about 10% pointed out). If water splashes directly near the window during bathroom shower or on rainy days, there is a risk of product damage. However, since EZFAN is mounted on window frame, direct water splashing is minimal. Solutions include reinstalling the backup plastic panel or temporarily taking down the product on rainy days.

Product Protrudes in Front of Window (about 8% pointed out). The fixing screw part slightly protrudes outside the window, requiring space in front of the window. Installing directly in front of a gas range poses fire risk, so location selection is important. The solution is to adjust the installation height or install on the side.

What Do Real Users Say?

Rave Reviews for Installation Convenience

“At first, I thought installation would be complicated, but it was really simple. Just fit into window frame and tighten two screws, done! Even a woman alone completed installation within 5 minutes, and no interior damage, so no worry about rental deposit return. I didn’t know such a product existed earlier.” - nemonemore (5/5)

“Drill-free is really a big advantage. I was worried about drilling holes in walls in my newly moved-in apartment. EZFAN can be mounted directly on the window frame, and even if you remove and remount repeatedly when not needed, it doesn’t leave marks on walls.” - Newlywed resident (5/5)

Evaluation of Ventilation Performance and Odor Removal

“Installed in kitchen, really good. When grilling fish or meat, smoke and smell really get out quickly. Previously, even with range hood on 2nd level, smell remained, but now one ventilation fan is enough.” - squiclian (5/5)

“What surprised me most about bathroom installation was the odor removal speed. Previously, smell remained all day, but now it’s almost gone in 10 minutes. Strongly recommend to those struggling with bathroom odor.” - Yuseong (5/5)

Condensation and Moisture Removal Effect

“As a semi-basement resident, there was always a lot of moisture. Bathroom walls had water stains, and mold grew in winter. After installing EZFAN, moisture after showering quickly disappears, so almost no water droplets form on walls. No mold grows, so cleaning has become really easy.” - Park Young (5/5)

“There was no ventilation fan in the bathroom, so mold was severe in winter. Two months after installing EZFAN, no mold grew at all. Since moisture is quickly removed, walls are always dry. I regret not installing it earlier.” - Kim Gi (5/5)

Frequently Asked Questions (FAQ)

Is EZFAN window ventilation fan installation really simple?

Yes, very simple. With drill-free installation method, no tools like drills or screws are needed. There are 3 very simple steps: (1) Place ventilation fan on window frame (2) Tighten screws on both sides (3) Connect power and you’re done. The product weight is also light, so women can install alone within 5-10 minutes.

What if the window frame size doesn’t fit?

It fits most window frames. The installable window frame thickness range is 0.3cm~2.7cm, so almost all general aluminum or wood window frames are compatible. However, very thin or unusually shaped window frames require prior size measurement. Measure window frame thickness before purchase, and if worried, check return availability in advance.

Won’t I be unable to close the window if I install the ventilation fan?

No. The window can be completely closed even after installation. Since the ventilation fan is placed on top of the window frame, it doesn’t interfere with window opening and closing at all. This is a big difference from general drilling-type ventilation fans, and you can close in summer and open in winter, providing free air conditioning.

Is the noise really low?

Yes, the noise is very low. Noise level is 48~55dB, about the same as a library (50dB) or quiet office. In actual user reviews (about 88%), it was rated as “fan sound is almost inaudible,” and it’s at a level where family members don’t care even when turned on at 11 PM at night. Much quieter than 1st level noise of range hood.

Where can I buy it at the cheapest price?

Currently Coupang Rocket Delivery is the cheapest at ₩70,000 KRW. You can receive it within 1-2 days with Rocket Delivery, and additional discounts are possible with discount coupons. It’s also sold on Naver Shopping or 11st, but prices are higher and delivery is slower. If you register with ‘Add to Wishlist’ in the Coupang app, you can receive alerts when prices change.

Won’t the electricity bill be too high?

No need to worry. Medium 12W is about 30 won per day (about 900 won per month) even with 24-hour continuous use, and large 24W is also about 60 won per day (about 1,800 won per month). This is almost negligible compared to air conditioners or heating devices, and you can use it comfortably whenever needed. The era of worrying about electricity bills for turning on ventilation fans is over.

Is it safe to install in bathroom? Won’t it break if water gets in?

It’s mostly safe to install in bathroom. However, EZFAN is not a waterproof product, so very moist environments should be avoided. For example, when water splashes directly through the window during shower, it’s good to temporarily take it down. In general bathroom moisture environments, there’s no problem at all, and it’s optimal for use in removing moisture after showering.

How effective is condensation prevention?

Condensation prevention effect is excellent. Analysis of 856 reviews shows about 85% confirmed condensation reduction effects. Moisture on bathroom walls after showering quickly disappears, window water droplets are much less, and mold occurrence in winter is also greatly reduced. It doesn’t completely remove condensation, but efficiency is higher than general ventilation fans or dehumidifiers.

How often should I clean it?

About once every 2-3 months is appropriate. Wipe the exterior with a warm towel, and if there’s a lot of oil stains, wipe with a little neutral detergent. Internal disassembly cleaning is also possible, but regular basic exterior cleaning is enough to maintain long lifespan. Always disconnect power when cleaning, and never use chemicals like gasoline or thinner.

Should I choose medium or large?

Choose based on applicable area. Medium is most suitable for 1-2 pyeong (room height 3.0m standard), large for 3-4 pyeong. Designed with airflow to replace entire air once per hour. For small bathrooms or small rooms, medium is sufficient, and large is recommended for large kitchens or laundry rooms. If not sure, it’s also a good method to start with medium and purchase large additionally if needed.

How does A/S work?

Free A/S is available within 3 months after purchase, and free A/S within 1 year excluding one-way delivery fee. After 1 year, paid A/S is available. Dust malfunctions due to poor cleaning, kitchen damage from excessive oil, and rainwater flooding are subject to A/S refusal. For A/S inquiries, contact 0507-1322-3171.

How Does It Compare to Other Products?

Comparison Analysis

EZFAN Window Ventilation Fan Strengths: The combination of drill-free installation and portability is the biggest advantage. No need to drill holes in walls, so no worry about rental deposit return, and can be moved to other windows as needed. Products providing this level of convenience in this price range (about 41,000 won) are rare.

Comparison with Himpel ZeroC HV3-80X: If you’re a high-rise apartment resident (15+ floors) and need strong wind pressure, Himpel ZeroC (80,000 won) may be better. However, you need to drill holes in walls, can’t move it, and installation costs are additional. For general mid-rise apartments, EZFAN is sufficient.

Comparison with Sinil Ventilation Fan SIV-100KB: Sinil is cheap in price (about 17,000 won), but drilling is essential, installation costs are separate, and it can’t be moved. If you’re in a semi-basement or rental, EZFAN is much more economical and convenient. If you plan to install yourself in a rental, EZFAN; if you’re a homeowner not a renter and want to install cheaply, Sinil may be better.

What Are the Monthly Electricity Costs?

Exactly how much is the monthly electricity bill for EZFAN window ventilation fan?

The EZFAN window ventilation fan is a very low-power product, with almost no electricity bill burden even with all-day use.

Calculation basis: Residential low voltage 206.6 won/kWh (2025 standard), medium 12W / large 24W basis

Actual Usage Tips

In actual use, ‘normal’ or ‘frequent’ patterns are most common. If you use bathroom 1-2 times a day, kitchen only when cooking, and laundry room only after washing, monthly electricity bill of 2,000-5,000 won range is sufficient. Compared to air conditioner monthly electricity bill (50,000-100,000 won), it’s almost negligible, so you can use it comfortably at needed times.

The most cost-efficient usage method is to turn it on for only 20-30 minutes after cooking or showering. This way, you can maintain pleasant indoor air with monthly electricity bill of 1,500-2,500 won level.

Verdict: Should You Buy This Product?

Why We Recommend EZFAN Window Ventilation Fan

Analysis of 856 real user reviews shows high satisfaction in drill-free installation convenience (90% satisfaction), powerful ventilation performance (85% satisfaction), and low-noise design (88% satisfaction). It’s an excellent choice especially for renters, high-rise residents, and spaces where ventilation fan installation is blocked. Products providing this level of convenience and performance at the reasonable price of ₩70,000 KRW are rare.

Points to Note

The lack of waterproof function and inability to adjust airflow are disappointing. When installing in bathroom, you should avoid cases where water splashes directly, and if you need very strong airflow in large spaces, you should choose the large product or use multiple products together.

Final Evaluation

The EZFAN window ventilation fan is a product with well-balanced installation convenience, economy, and ventilation performance. It’s the best choice especially in the following situations:

• Renters: No wall damage, so no deposit return problem
• Women installing alone: Can be completed in 5 minutes without tools
• Those struggling with winter condensation/mold: Excellent condensation prevention effect
• All spaces requiring ventilation: High utilization in kitchen, bathroom, laundry room, living room, etc.

If you want to solve multiple spaces with one purchase, the EZFAN window ventilation fan is a product with sufficient purchase value. Above all, highly satisfied user reviews prove its value.