Frequently Asked Questions
Comprehensive answers regarding RTFANS large industrial HVLS fans, installation clearances, air circulation, maintenance, and technical capabilities.
Can I use an HVLS fan to improve the air quality of my facility?
Yes, you can use High volume low speed (HVLS) fans to improve the air quality of your facility. Large HVLS industrial, commercial and residential fans can improve the air quality by reducing the humidity of the area. It spreads the dampness to provide comfort to people who are present or working in the area. Moreover, it can also distribute the odor and smoke present in the area to make air quality better. Thus, it provides healthy and fresh air to the people. RTFANS-HVLS fans are capable of reducing the humidity of the area. They can reduce the humidity of the area by up to 18%.
View answerCan these HVLS fans be mounted outdoors?
Traditional HVLS fans can’t be mounted outdoors, but the portable series can be. Moveable fans are indoor or outdoor flexible, they can be moved. They are suitable for outdoor and there is no fixed position in the work area. The area can be gardens, gyms, playgrounds, and so on.
View answerCan the speed of the fan be adjusted?
Yes, the speed of the fan can be adjusted. There is a DANFOSS frequency converter with RTFANS and a step-less regulator to vary the speed. You can adjust the speed according to your wish.
View answerDo I need an HVLS fan if I already have an excellent HVAC system?
It is better to have HVLS fans even if you have an excellent HVAC system. These fans assist your HVAC system and spread the cool air to every corner of the area. If you have HVLS fans, then there is no need to run the AC fully for a long time. You can increase the temperature and decrease the time of running because these fans help to spread the cool breeze quickly. You don’t need to waste energy and wait for a long time. Thus, you can easily save the running cost of your HVAC system, it will be reduced a lot. You can save up to 20% of power if you increase the temperature of the AC by 1˚C. Therefore, you can increase the temperature of your AC and allow fans to spread the air. It becomes more economical if you use an HVAC system with HVAC fans. Moreover, you can also turn off the AC at normal temperature, the High volume low speed (HVLS) fans will keep the area cool and provide healthy and fresh air to people. These fans can also reduce humidity and odor.
View answerHow do I know that I need an HVLS fan?
If you have a large space and you want to make the performance of the air conditioner, air quality, and ventilation better, then you need HVLS fans. You can make the ventilation better, HVLS fans will send the cool air to every corner. They also make your HVAC system efficient by reducing the time of use. You will save your money in the end. You can also use these fans in the normal season when you don’t need AC, these fans can keep the area well-ventilated. It is hard to place small fans in a big area, so the best option is HVLS fans . One fan can cover an area of up to 1800 sq. meters depending on the size of the fan. Your workers or people at the place can easily do their work without any hassle. They will be happy with the healthy and fresh air. If you are not sure whether you need to use HVLS fans or not, then you can contact us, and we will tell you everything according to the place. We are ready to assist you.
View answerHow do I know where to place an HVLS fan?
You need to place the HVLS fans correctly whether you are using huge industrial or commercial ceiling fans. The placement of fans matters a lot to cover the whole area. You can install these fans at any place where the minimum clearance is 4 meters. Our team representatives can help you place the fans in the right place. For lower-height areas, there are low-profile industrial ceiling fans.
View answerHow long is the warranty on an HVLS fan?
RTFANS HVLS fans have a warranty period of three years. We believe in customer satisfaction; therefore, we provide reliable warranty to our customers.
View answerHow should the fan be set up with a sprinkler system?
HVLS fans are high volume low-speed fans that mean, they can provide a high volume of air at very low speed. Thus, there is no need for a sprinkler system with these fans. They can provide enough ventilation and dehumidification to provide fresh and healthy air. Use RTFANS leading-edge commercial and industrial ceiling fans for ventilation.
View answerIs it expensive to repair an HVLS fan if something goes wrong?
Yes, it is very expensive. Most HVLS fans are made in the USA and China. A few manufacturers in India produce HVLS fans. But almost all manufacturers do not have after-sales service. If the HVLS fan goes wrong, you have to think about the cost of maintenance. The fee for accessories, freight, and labor costs is too high. Although it is just a glitch, you may be lost a lot of money. To save money, you should get high-quality HVLS fans from reliable manufacturers that can also provide after-sales services. This will make the maintenance work hassle-free at a low cost. If the company, outlet or repairing center is in your country, then it would be more beneficial. RTFANS is a leading provider of all solutions for HVLS fans in china. You will also get reliable after-sales guidance as well.
View answerMy facility gets extremely hot. Can an HVLS fan run safely in it?
The appropriate operating environment temperature for the HVLS fan is -10~55℃. Besides, the fan should not be installed.
View answerShould an HVLS fan have winglets like an airplane?
Yes, HVLS fans should have winglets. These are not for aesthetics, but they make the fan appealing as well. Their purpose is to improve aerodynamics. It helps to reduce turbulence. RTFANS all HVLS models have winglets to provide better performance. It also reduces energy loss and makes the fan more stable.
View answerWhat are fan sizes available for these large HVLS ceiling fans?
We have three main types of large HVLS ceiling fans which are: King Series Paragon Series Charm Series Charm II Series Virtue Series Grace Series The RTFANS industrial HVLS fans have five models of heavy-duty industrial ceiling fans. The diameter ranges from 3.7m to 7.3 meters. All models have different RPMs, applicable area diameter, current, and weight. You can select large or extra-large industrial ceiling fans for your use. Our team will assist you in getting the right size. Commercial HVLS fans have a diameter from 4m to 2.8m. These are available in four models. PMSM fans have a diameter from 2.8m to 7.3m. There are six models from the applicable area of 400 to 1,800 sq. meters.
View answerWhat comes standard with each RTFANS HVLS fan purchase?
We provide everything, including accessories. If you ordered multiple fans, be sure to keep the components of each fan together. The fans each have differently rated parts that are not interchangeable. You will get the following things with each purchase. Press here to download the Standard with purchase: Download We provide everything, including accessories. If you ordered multiple fans, be sure to keep the components of each fan together. The fans each have differently rated parts that are not interchangeable. You will get the following things with each purchase. Press here to download the Standard with purchase: Pre-installation Part List Fan motor with decelerator, Extension Tube, Beam clip device, Safety Cable, Cardan Joint, Bottom Cover. Hardware Standard clip device: M16 x 65 mm = 4 pcs Hex Head Cap Screw M16 = 4 pcs Nylock Nut M16 = 4 pcs Spring Cushion M16 = 8 pcs Flat Washer Cardan joint: M20 x 130 mm = 2 pcs Hex Head Cap Screw M20 = 2 pcs Nylock Nut M20 = 2 pcs Spring Cushion M20 = 4 pcs Flat Washer Drive Device Installation: M20 x 130 mm = 2 pcs Hex Head Cap Screw M20 = 2 pcs Nylock Nut M20 = 2 pcs Spring Cushion M20 = 4 pcs Flat Washer Fan Hub M6 x 12 mm = 12 pcs Hex Head Cap Screw M6 = 12 pcs Spring Cushion Airfoil Blades: M8 x 55 mm = 12 pcs Hex Head Cap Screw M8 = 12 pcs Nylock Nut M8 = 12 pcs Spring Cushion M8 = 24 pcs Flat Winglet: ST5.5 x 16 mm = 12 pcs Crosshead tapping screw Bottom Cover: M6 x 12 mm =3 pcs Flat head screw Installation Procedure: Connecting the fan: Connect the fan using the standard clip device. Installation of Cardan joint: Help you to align the fan perfectly. Extension rod: Connected the Cardan bone with the drive device. Drive device installation: We Need 2-3 people to lift it because it is heavy. Power supply: You need to take wires to the fan using sleeves and conduit. Steel wire ropes: Get four steel wire ropes to connect the fan with the building structure. Safety cable: Prevent the airfoil blade shake. Installation of empennage: Make sure everything is tightened correctly. Installation of winglet: Keep the overall beauty of the fan blades. Bottom cover: The last step is to install the bottom cover and tighten it using bolts.
View answerWhat is the difference between an HVLS fan and a traditional fan?
high volume low speed (HVLS) fans differ from traditional fans in many ways. Let's discuss them one by one. Number of Fan Blades For a large area, you will need many traditional fans to cover the whole area while if you use High volume low speed (HVLS) fans, then you will need only a few units. For a 9000 sq. meter area, you will need only 6 fans. To cover the same area with traditional fans you will require nearly 300 fans. So, you need a few units only to cover a large area if you go with High volume low speed (HVLS) fans. Energy Consumption Since to cover a large area, you need hundreds of fans; therefore, the total power consumption will be higher. The total power consumption can be 100 kW for a 9000 sq. meter area if you use traditional fans. In contrast, HVLS fans are few and they can do the work by consuming a few kilowatts only. Thus, HVLS fans save your energy and reduce your monthly bills. Noise Noise will be an issue with traditional fans. You will use hundreds of fans and the collective noise will be annoying and might be above 85 dB. So, it is better to use HVLS fans because they have low noise. RTFANS large industrial ceiling fans have a noise level of 43 only. Thus, they are very quiet. Studies used by the Public Utility Commission in this proceeding showed that 45 dBA at night (outside the home) was fully protective of health and sleep. Maintenance RTFANS adopts mortise and tenon structures with welding for the mainframe while other suppliers in the market use only welding to connect. Life The life of HVLS fans is much greater than traditional fans. They can work for more than 10 years if installed properly. While traditional fans have a maximum life of five years only. Airflow HVLS fans have excellent airflow, they can provide air to every corner of the room. They provide a tridimensional natural breeze that keeps the air fresh and healthy. On the other hand, traditional fans have less volume airflow, which is not enough for the corners. Large leading-edge commercial and industrial ceiling fans can provide airflow of 13,500 cubic meters/minute that can cover a massive area of 1600 sq. meters. If you use a fan & cooler Combo system for your warehouses or factories, it will be very practical than ever.
View answerWhat is the expected service life of HVLS fans?
The expected life of RTFANS HVLS fans is 10 years or more. It depends on installation and use. Different places, use frequency, use method, and so on can cause influence the fan’s life span.
View answerWhat makes the RTFANS HVLS fan better than the competitors?
The reasons are: Modern Variations There are three different models of RTFANS HVLS large industrial ceiling fans. They have a diameter from 24ft to 18ft. You have a choice to select any of them according to your use, and will not find these variations easily in the market. You can select the best one by considering the weight, rpm, diameter, airflow, and current of the fan. Thus, RTFANS has a variety of big industrial ceiling fans and our team can suggest the best option according to your place. RTFANS are made from durable material that can ensure the strength of the fan. The chassis of the fan is made of imported aeronautic aluminum alloy (AA7075). It is forged by a 1000T machine with 570MPa extension strength to provide good strength. The blades are also made of high-strength aircraft aluminum alloy. So, we do not compromise on the strength of our huge industrial ceiling fans. Zero Maintenance There is no maintenance required for over 20000 hours of operation. We use the “Shell” top-class “Omala” S4 lubrication oil to provide zero maintenance. Moreover, there is a German “Simirit” double oil seal design to ensure no leakage, durability, and reliability. Innovation RTFANS adopts mortise and tenon structures with welding for the mainframe while other suppliers in the market use only welding to connect. Bigger Airflow With a leading R&D team for HVLS fans , RTFANS brings 20-30% higher air volume than other HVLS fans brands. Modern Industrial Ceiling Fans We have all modern designs of huge industrial ceiling fans to ensure the look and aesthetics of the area. All designs are according to modern standards. We use new, unique, and reliable parts to ensure better performance. Further, industrial and commercial ceiling fans are without lights to save energy. Due to the above reasons, RTFANS are the best industrial ceiling fans and we provide our customers with reliable, durable, and cost-effective solutions.
View answerWhat should be the mounting height for the fan?
Different series of HVLS fans require different mounting heights. GIANT INDUSTRIAL CEILING FANS For these fans, the clearance from the roof to the fan blade should be 1.2-3m with extension rob. The fan diameter is 3.7m(12’) to 7.3m(24’) and the clearance from floor to fan blade should be 5-9m. PMSM SERIES HVLS FAN The clearance from the roof to the fan blade should be 0.5-2.5m with an extension rob. The fan diameter is 3.7m(12’) to 7.3 m(24’) and the clearance from floor to fan must be blade 5-9m. BIG COMMERCIAL CEILING FANS The clearance from the roof to the fan blade must be 0.4-2.4m with extension rob. The fan diameter is 2.8m to 4.0m and the clearance from floor to fan blade should be 3-5m. You can check RTFANS HVLS fans for sale. All the above conditions are the best installation heights. As long as the building height is above 4.5 meters, it can be installed in steel structure, concrete structure, spherical grid structure, or complex structure. There are no special requirements for the installation site, and the plant can be installed with or without driving. You can also get low-profile industrial ceiling fans from RTFANS if you require them for the garage and other places.
View answerWhat types of facilities benefit most from HVLS fans?
The size of the HVLS fans depends on the area. Our team representatives are ready to tell you the right sizes of fans you need for the best performance. RTFANS leading-edge commercial and industrial ceiling fans are beneficial for other facilities as well. The facilities that are benefitted are, HVAC Systems: HVLS fans assist your HVAC system. They can spread the air quickly in the whole area. You can also increase the temperature of your AC by a few degrees and reduce the running time by using such fans. Dehumidification System: If you use the dehumidification system, then HVLS fans can also help to reduce the humidity. These fans can distribute the air in the whole area and reduce the level of humidity by up to 18%. Heating System: HVLS fans can spread warm air in the area. They do it quickly and make the area warm and comfortable.
View answerWhy buy an industrial fan from RTFANS?
There are many companies that offer large or giant industrial ceiling fans for sale. But there are a few reasons that make RTFANS reliable and superior. We are Experts RTFANS is the leading solution provider in China that has been focusing on air ventilation and cooling products and system since 2003. It has rich experiences in both products and systems. It can not only provide you with high-quality products and competitive HVLS fans prices but also can help you to solve your problems. It helps you to meet your different requirements for ventilation and cooling , especially in large areas. Excellent Market Reputation RTFANS is the leading brand in China in (HVLS) high volume low-speed fans and has a good reputation in the market. The first HVLS industrial ceiling fan was made by the RTFANS team in 2008. We have a strong technical support team and we are leading in HVLS fan R&D in China. Reliable Service RTFANS provides you not only with the product but also service including installation training and after-sales reliable service and guidance. Warranty RTFANS gives a lifetime warranty for its mechanical parts and 3 years warranty for its electrical parts to the large industrial HVLS fan products. We provide heavy-duty industrial ceiling fans to ensure durability. Research and Development Our research and development team works continuously throughout the year to make the best industrial, commercial, and residential ceiling fans. We have patented and unique designs to provide better airflow and quality. We have six blades designed for unbeatable airflow at low energy consumption per unit area. Our company also provides industrial and commercial ceiling fans with remote control. If the height of the ceiling is not much, then you can also get low-profile industrial ceiling fans from us for garage and low-height areas. Wide Range We have all modern designs of huge industrial ceiling fans to ensure the look and aesthetics of the area. All designs are according to modern standards. We use new, unique, and reliable parts to ensure better performance. Further, industrial and commercial ceiling fans are without lights to save energy. Air Quality Our large-diameter industrial ceiling fans not only distribute the air but also improve the air quality of the place. No Maintenance Our fans do not require maintenance, they are almost free of maintenance.
View answerWhy only 6 blades instead of more?
First, More fan blade does not mean more air. It is a balance of total efficiency with consideration of noise level and air volume. You will not get much air if you cover most of the area or the whole area with blades. Such a fan will be useless. We have not just selected 6 blades for our fans, we have tried and tested everything on an experimental basis and then we came up with the idea of 6 blades. It is the best possible option for High volume low speed (HVLS) fans. Our first HVLS big industrial ceiling fans were made with 10 blades and then 8 blades as the second generation. Having 6 blades is the amendment to the 7th generation of our large industrial ceiling fans. We have tried to make our products cost-effective, efficient, better, and durable. We are still trying to improve our fan design for better efficiency. Creating a larger airfoil wasn’t simply the answer to improving efficiency. The airfoil must work efficiently through a range of speeds. When an HVLS fan rotates, the end of the blade moves faster than it does at its fixed point at the chassis, the fan blade angle also gives an impact on airflow. While airflow patterns needed strong research and consideration. We did research and we are still trying to come up with innovative and effective ideas to make our fans the best industrial ceiling fans. When engineers experimented with the airfoil shape, they discovered that a larger shape allowed them to reduce the number of blades. The final fan design decreased from 10 to 8 and then 6 blades, without a corresponding drop in fan performance. Reducing the number of blades proved to be beneficial. Moreover, it also reduced the torque which increased the life span of the fan. A fan’s lifespan is related to torque: Horsepower = Torque * Revolutions Per Minute (RPM) 5252 As RPM goes up, torque goes down for the same horsepower. Our engineers also found that, due to the longer airfoil shape, 6-blade HVLS fans rotate faster than 8 or 10-blade fans, which lowered the torque. Since torque is constant stress on a fan’s motor, bearings, and gear; therefore, less torque meant longer fan life. Why do your HVLS Fans have only 3 fan blades? There is high volume low speed (HVLS) fans available in the market with 3 blades. Due to the fewer number of blades, the cost of the fan is also less. The problem with such a design is low airflow. Such fans cannot provide a high volume of air at low speed as compared to fans with more blades. The number of blades plays an important role. It should be perfect to cover more areas to provide excellent airflow at low speed. RTFANS has done a lot of research on the number of blades. We have tested many ideas and finally, we came up with the idea of 6 blades. We found the best performance of HVLS fans in the case of 6 blades. This was our 7th amendment and we are still proud of it. 6 blades provide high volume airflow at low speed. Hence, 6 blades are for the best performance of our high volume low speed (HVLS) fans.
View answer