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Common Problem

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Q1 : What is negative pressure ventilation?

Q2 : The hot air is at the higher place. Does negative pressure fan also need to be installed at a higher place?

Q3 : How many degrees can be cooled down by using the negative pressure ventilation equipment in my factory?

Q4 : The air outside is hot, so is the air drawn in hot?

Q5 : How do I select a proper supplier?

Q6 : What is relay air supply？

Q7 : Will the exhaust fan leak after installation? Does it have an impact during a typhoon?

Q8 : What makes the difference in the material and number of fan blades?

Q9 : Is a DC motor really more energy-efficient than an AC motor and a variable-speed gear motor (gearbox)?

Q10 : What is the difference between direct-drive and belt-drive types?

Q11 : What is the coverage area per single negative exhaust fan? How many units are required to have a cooling effect?

Q12 : Is the operational noise very loud? Will the noise be multiplied by installing multiple units?

Q13 : Does it increase water expense if the water curtain is installed?

Q14 : How long does the negative pressure fan need maintenance or cleaning?

Q15 : Can I install the positive pressure ventilation fan myself? Is the installation difficult?

Q16 : What are the differences between eco-friendly air conditioning and negative pressure fans?

Q17 : How to install a water curtain wall? What is the material used?

Q18 : What types of industry can utilize the negative pressure ventilation equipment? Will it consume a lot of power and increase electricity expense?

Q19 : Can the shutters be opened if the negative pressure fan is not turned on?

Q20 : The price of ventilation equipment?

Q21 : Can the fan be adjusted for speed? Can it operate in both forward and reverse?

Q22 : Water-cooled fan principle? Which type is the most suitable to buy?

Q23 : How to ventilate a greenhouse?

Q24 : How to ventilate in animal husbandry?

Q25 : How to ventilate industrial plants?

Ventilation principle and FAQ

Please check the FAQ here. If you cannot find the answer, please contact us.

Popular inquiries : Negative pressure fan、Positive pressure fan、Water cooling fan、Eco-friendly air conditioning......