抽油烟机应该有多少CFM？

什么是抽油烟机的CFM？

Every range hood’s ventilation ability is measured in cubic feet per minute (CFM). The CFM measurement refers to how many cubic feet of air your range hood is capable of moving per minute at its highest speed.

从本质上讲，CFM表示抽油烟机从你的厨房排出空气的速度。CFM越高，通风速度就越快。 

Potential Problems of Overpowered Range Hoods

While it may seem like more power is always better, a range hood with too much CFM for your kitchen can cause issues that outweigh the benefits:

• Unnecessary energy use: A high-CFM hood running at full power consumes more electricity than needed, driving up your utility bills.
• Backdrafting: Overpowered hoods can pull air from vents or chimneys, drawing harmful gases like carbon monoxide back into your home.
• Negative air pressure: Excess suction can affect your HVAC system, making it harder to regulate temperature and air balance indoors.
• Increased noise levels: High-powered fans often run louder, creating a disruptive cooking environment.
• Ductwork complications: Smaller or improperly installed duct systems may struggle to handle the airflow, reducing efficiency and causing wear on the motor.

When Is Make-Up Air Required?

When a range hood removes air from your kitchen, that air must be replaced to maintain balanced indoor pressure. This replacement air is known as make-up air.

In many areas, local building codes require a make-up air system when a range hood exceeds 400 CFM. These systems bring fresh outdoor air into the home to offset exhausted air, helping prevent backdrafting, HVAC performance issues, and pressure imbalance.

Because requirements vary by location, it’s important to check local building codes or consult a contractor before installing a high-CFM range hood, as a make-up air system can affect installation complexity and overall cost.

决定一个好的抽油烟机CFM的因素

Most kitchens don’t need extreme airflow. When buying a range hood, your cooktop type, kitchen layout, and how often you cook will determine most of your CFM needs. When in doubt, it’s better to slightly oversize your range hood than choose one that struggles to keep up.

下面是为您的家庭选择最佳抽油烟机时需要考虑的因素的详细清单。

1.你的炉子或灶台的宽度和BTU

Your cooktop’s size and heat output are two of the most important factors in determining how much airflow your range hood needs.

Wider cooktops create a larger area of smoke and grease, while higher BTU output generates more heat and fumes that require stronger ventilation—especially with gas ranges.

Together, these factors provide a baseline for CFM recommendations for range hoods. From there, airflow can be adjusted based on kitchen size, layout, ductwork, and how often you cook.

2. Ductwork Length & Design

The design of your ductwork directly impacts how effectively your range hood can move air. Long duct runs, narrow ducts, and multiple bends increase resistance, reducing airflow and overall performance.

Kitchens with more complex ducting often benefit from higher CFM to compensate for this added resistance and maintain effective ventilation.

3. Kitchen Size

Kitchen size affects how much airflow your range hood needs to keep the air clean and comfortable. Larger kitchens—or spaces with high ceilings or open layouts—require more ventilation to effectively remove smoke, heat, and odors.

As a general guideline, a range hood should be capable of refreshing the air in your kitchen about 15 times per hour. Larger or more open spaces may benefit from higher airflow.

4. Cooking Habits

How often and how intensely you cook determine how much airflow your range hood needs. Daily cooking, high-heat techniques, or preparing meals for larger groups typically require higher CFM to keep smoke and grease under control.

If you’re choosing between two range hood models with different airflow options—such as the Slant Vent Series—it’s usually better to select the higher CFM if you cook frequently.

5. Noise Level

For many range hoods, “quiet” usually means there’s a smaller fan that will produce less suction. At FOTILE, we solve this problem using physics. By utilizing the Coanda Effect, we can increase the airflow and suction of our range hoods without increasing noise levels.

6. Range Hood Mounting Height

The distance between your cooktop and your range hood affects how much airflow is needed to effectively capture heat, smoke, and fumes. As installation height increases, ventilation becomes less efficient without additional airflow.

Range hoods installed more than three feet above the cooking surface may require higher CFM to maintain proper performance.

7. Your Budget

Where your range hood is installed also affects how much airflow is needed for effective ventilation.

Island range hoods typically require more CFM than wall-mounted models because they lack a wall to help contain and direct smoke, grease, and heat. Because air can disperse in all directions, island installations often require an additional 100–200 CFM to achieve comparable performance.

If your range hood will be installed over a kitchen island, choosing a slightly higher CFM can help ensure consistent capture of cooking byproducts.

8. Your Budget

抽油烟机的价格可以从500美元到3000多美元不等。价格较低的抽油烟机可能由不太耐用的材料制成，而且不会有效地通风，而极其昂贵的型号往往有不必要的功能，或被设计为符合特定的审美。一般来说，避开最便宜或最昂贵的型号，选择介于两者之间的产品是最好的。 

At FOTILE, our range hoods are durable, efficient, and priced to reflect that, starting at $849 for our Pixie Air UQS3001 model. 

CFM Guidelines by Cooktop Type

The type of cooktop you have determines which airflow guideline is most relevant for your kitchen.

Gas ranges:
Ventilation is typically based on total heat output. A common guideline is 1 CFM for every 100 BTUs of total burner capacity.

Electric and induction cooktops: Airflow is usually based on cooktop width rather than heat output. For these cooktops, a general guideline is 100 CFM per linear foot for wall-mounted range hoods.

These guidelines assume the range hood is installed 30–36 inches above the cooking surface, which is standard for most residential kitchens.

How to Calculate CFM For Your Range Hood

To calculate the right CFM for your range hood, consider your cooktop, your kitchen’s size, and how you cook. Use the calculation below that best matches your cooktop and kitchen layout, then select the highest applicable CFM to ensure effective ventilation.

• Measure your cooktop width. Use 100 CFM for every 12 inches of stove width. For example, a 36-inch cooktop needs at least 300 CFM.
• Account for based on heat output (gas ranges only). Add 100 CFM for every 10,000 BTUs. A stove with 30,000 BTUs would require 300 CFM.
• Calculate based on kitchen volume. Multiply your kitchen’s length × width × height to get its cubic feet. Multiply that number by 15 (air changes per hour), then divide by 60.
  
   Example:
  12 ft x 15 ft x 10 ft = 1,800 cubic feet
  1,800 × 15 = 27,000
  27,000 ÷ 60 = 450 CFM
• Use the highest result. Compare your cooktop-based and kitchen-based calculations and choose the higher number for effective ventilation.
  
  For most households, aiming slightly higher is better—especially if your ductwork is long or you cook frequently. FOTILE’s range hoods feature high CFM to align with various kitchen sizes and needs.

为什么FOTILE抽油烟机使用最大等效CFM而不是

At FOTILE, efficiency and convenience are key components of high-quality range hoods. That’s why all of our range hoods have a higher CFM rating—to help make your kitchen as healthy and comfortable a space as possible. 

我们的无滤网技术结合了WhisPower电机和我们的Capture-Shield设计，可以安静而有力地加速排烟和油脂分离。电机是安静和高效的，而捕获盾牌使我们能够应用科恩达效应--暖空气飘向并沿着附近的表面流动的自然趋势，在移动过程中在这些表面上沉积空气中的颗粒。

这些特点加在一起，使我们的抽油烟机能够覆盖更大的灶台表面，并达到极高的油过滤和气味消除率。 

Quick CFM Tips to Avoid Common Mistakes

• It’s better to slightly oversize your range hood than choose one that’s underpowered for your kitchen.
• Higher-CFM hoods are more flexible because they can run at lower speeds when full power isn’t needed.
• Multi-speed range hoods allow you to adjust airflow based on what you’re cooking.
• Island hoods generally require more CFM than wall-mounted designs.
• If your hood exceeds 400 CFM, check whether a make-up air system is required in your area.

选择您的FOTILE抽油烟机

FOTILE提供三种风格的抽油烟机，具有不同的CFM能力，以适应各种规模的厨房。

Pixie Air Series – Best For Small to Medium Kitchens

Our Pixie Air Series ranges from 800 to 850 CFM, perfect for small or medium kitchens. It mounts easily under your cabinets and comes with a recirculation kit. This kit allows you to install your Pixie Air with outside ventilation or as a recirculating range hood.

Slant Vent Series – Best For Medium to Large & Open Kitchens

我们的斜面通风系列的特点是850至1000CFM，适合稍大的厨房。它在中大型厨房和开放空间中效果良好。与Pixie Air一样，它很容易安装在橱柜下面，并与外部通风系统兼容。这个型号也有拉丝不锈钢或黑色钢化玻璃，以适应你的个人风格。 

Slant Vent Series – Best For Medium to Large & Open Kitchens

周边通风系列具有我们最强大的抽油烟机，具有1000至1100 CFM。所有周边通风型号都是壁挂式的，使它们成为大型开放式厨房的理想选择。

我们的抽油烟机保证使您的厨房对整个家庭来说更安全、更舒适。我们所有的抽油烟机都很安静，容易擦拭，并且具有至少92%的油脂分离率和97%的气味消除率。现在就去购物。

Frequently Asked Questions About Range Hood CFM