How to Measure Ceiling Fan?

HVLS fans are widespread nowadays. They are mostly used in large spaces like gymnasiums, dairy barns, factories, warehouses, libraries, restaurants, etc. These ceiling fans can provide a high volume of air at a very low speed. Therefore, they are called HVLS (High Volume Low Speed) fans. Due to the advantages that these fans have, their demand is increasing day by day. These fans ventilate an area better than any other type of fan. Not only ventilation but also improve air quality by reducing humidity. Thus, these fans make people fresh and energetic. This is the reason that factories and companies prefer to install them to keep the workers happy and increase productivity. People usually ask a common question, which is “How to measure a ceiling fan?”. Today, we will discuss this question in depth.

For the selection of the right fan, you need to know how to measure a ceiling fan. It is not easy to measure what size of ceiling fan you need. It depends on many factors. Let’s see the factors first, and then we will see how you can measure the ceiling fan in the right way.

Factors on Which the Size of the Fan Depends

There are a few factors that you need to consider. You should know about them first to tell someone or ask any company about the right size of the fan. Let’s see the factors.

1. Height of the Ceiling

The first thing that you need to measure is the height of the ceiling. It is a must because ceiling fans cannot be installed in any area. The ceiling height should be more than 4 meters. Many manufacturers do not recommend the installation of HVLS fans below this height. If the height of your ceiling is about 4 meters, then you can install an HVLS ceiling fan. You also need to consider how much higher the ceiling is. If it is very high, then it won’t be able to work effectively. You need to bring the fan to the recommended height. For this purpose, an extension rod is needed. After measuring the ceiling height, you will get to know whether you need an extension rod or not. Keep in mind that the cost of the extension rod is separate; it will increase the cost of the fan. RTFANS also provides extension rods with fans at a minimum cost depending on the height.

2. Area of the Place

Measuring the area of the place where you want to install the HVLS fan is essential. It will be the base of all calculations. You need to measure the area. For accurate measurement, you must measure the length of the walls. After the measurement, you can simply calculate the area by multiplying the length and width of the room. Keep in mind that this is for a place that is rectangular in shape. For irregular patterns, you need an expert to calculate the area. RTFANS facilitates customers by inspection. Our team can inspect the place to calculate the area.

3. Obstacles and Pillars

HVLS ceiling fans are very large in diameter. The fan blades are very long. The diameter ranges from 2.8m to 7.3m (8ft-24ft). You can imagine how large these fans are. They need a free area to work. There should not be any obstacles near. Any pillar, beam, equipment, or hindrance can affect the performance, or you may not be able to install a particular size. You need to select the size of the fan so that its blades cannot hit anything and remain away. In this way, the fan can perform better. Every area has a different structure. Therefore, ceiling fans are selected according to that. If there are pillars, then you can measure the distance between them to select the best possible option for the ceiling fan. Make sure to count all pillars and obstacles, so you can select the right size of the fan. RTFANS representatives are always ready to visit your area and assist you with how to measure the ceiling fan size.

4. Number of Fans

You also need to decide how many fans you will need to cover the area. If there is no hindrance or obstacle, then you could easily decide the size of the ceiling fan or the number of fans. But if there is a hindrance, then it is not easy. For a proper idea of the area coverage of HVLS ceiling fans and their sizes, you can see the chart below.

RTFANS HVLS Commercial Fans

You can see the table below to have an idea of the size of the fan and its maximum space of action.
Measure Ceiling Fan


You can see the table below to have an idea of the size of the fan and its maximum space of action.
Measure Ceiling Fan

The Best Way to Measure Ceiling Fan

You are not an expert in calculating the size of HVLS fans. HVLS fans are expensive; you need to make the right decision. The best way is to take note of the factors that we have mentioned above and contact a company and tell them the figures. The company may send representatives to the place to calculate everything. It is a better approach if you want to measure the HVLS fans correctly. RTFANS’s representatives are always available; you can contact us to get guidance. We will help you select the right size of HVLS ceiling fans for your area.


Indeed, HVLS fans are excellent for the ventilation of large areas. Many companies prefer to install them to improve air quality. The most common question about HVLS fans is “How to measure ceiling fans?” It is not easy to measure the size of the fan. We have mentioned a few factors that you need to consider.

You can consider them and contact RTFANS. We will provide you with the best size of the ceiling fan according to the place where you want to install it.

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