KUULFANS series are the large range HVLS fans with diameters from 3.7 m to 7.3m. Different from traditional gearbox, it is very quiet at 39dbA and suitable for many places that require such quiet large fans. Featuring the world’s strongest PMSM, this quiet HVLS fan has a high electrical efficiency of 84%.

Now,a more cost-saving solution are large industrial ceiling fans – also known as HVLS fans (High Volume, Low Speed).

OPT HVLS fans used for large open space cooling and ventilation with large diameter from 3.7m to 7.3m,air volume can be 13200CMM,coverage areas is 1800CBM.

"KQ"series in the KUULFANS is the first self-design product with introducing western technology and 10 years upgrading.

In the cycle of “Beating High Temperature” We constantly improving Superb technology leads the trend of times We believe OPT HVLS FAN Breeze Air Will definitely bring you a more comfortable exprience We know clearly Its every spinning is valuable for you happy life.

In the cycle of “Beating High Temperature” We constantly improving Superb technology leads the trend of times We believe OPT HVLS FAN Breeze Air Will definitely bring you a more comfortable exprience We know clearly Its every spinning is valuable for you happy life.

We invented the big industrial ceiling fan – also known as the High Volume.For 11 years, We continually strive to design the HVLS fans with higher performance.

Whether your students are studying or do exercising, they perform better when they’re comfortable. KUULFANS help them feel up to 5-8°C cooler, indoors or outdoor!

OPT pays great attention to the practicality and market reputation of the products, and insists on using the best technology, the bestesign and the most advanced concept to make the best products in the world. The product concept runs through every step of R&D, production, sales and service. OPT has a complete product management system and is fully upgraded with the development of technology. At the same time, we have long-term cooperation with research institutes such as the National Materials Research Institute and the National Electromechanical Research Institute to provide users with the most satisfactory products using technology and quality.

High volume low speed (HVLS) fans generate a large volume of air that gently flows down to the ground. This air moves throughout the space, mixing and circulating air more efficiently. During the heating season, HVLS fan technology can destratify uneven temperatures that can be in excess of 5-10 degrees from ceiling to floor.

Founded in 2008,Suzhou KUULFANS has focused on HVLS fans filed for 11 years.Our first fan installed in Japanese AsahiGlass(Suzhou)Co.,Ltd Factory.After 11 years,they still operate well,which proves that OPTFANs can handle the test of time and harsh working condition.

PMSM is a permanent magnet synchronous motor.

For 11 years,OPT focused on the upgrade of HVLS fans,to provide more safe and energy-saving fans.

OPT HVLS can be used in everywhere you wanna only if the space is large and open,the roof is above 3.5m high.HVLS fans is different from traditional fan not only on the extra large size but also on its low speed that reduce the energy cost when operating it.It can save 30% energy bill by using it.Moreover,if combined with HVAC system,the effect can reach ultimate.