Fan sSelection criteria

[mesi55]

Except the price, which technical issues should I notice when I want to select each one of these fans? I mean which fan criteria is more important for proper selection? maxi-vent, silent or JetStream(centrifugal)?

 

[Drazen]

All criteria shown has some purpose, depending on circumstances, otherwise they wouldn't be shown.

You have to have in mind the whole system, use of backdraft dampers, type of outdoor outlet, available space for installation.

IP protection spec have to satisfy bathroom requirements, but it's to be assumed that all presented are specified for bathroom installation. If they are in-line fans, though, that does not mean all can be installed in wet areas (wall fans almost always can if they are specified for bathrooms). You have to check installation manuals.

Other than that, noise criteria should be among the most important for luxury residences. What your table shows is likely noise through casing, but inlet and outlet noise have to be checked as well - depending on position of your fan relative to occupied spaces.

As this manufacturer offers pile of alternatives, it would not hurt to call their rep and discuss your specific case, asking for their recommendation.

Not too simple tasks even for simple systems if you want to do the job properly!

 

[willard3]

Hire a ventilation Engineer to help you with fan choice.

 

[flexiblycool]

Willard3
If hiring a ventillation Engineer is advised, then what is the purpose of this Forum?

 

[willard3]

If you read forum policies, using this forum to have someone else do your design is proscribed.

 

[mesi55]

How did you come to this conclusion? The title is "fan criteria ..." and is not begging for solution although non of both is answered except very good explain by dtazen and thanks him/her. I meant to get other person ideas and guidelines. I know how can I get my job done or whether I need hire someone or not. It's interesting that unlike most people that helping here and devotes their time to explain and guide others, there are few that trying to patrol and act as a police!!!

 

[mesi55]

willard3, here is your forum contribution although I could see few single line answers too
It's a good attitude to contribute in any forum but I prefer to be silent rather than these mate!

"If you read forum policies, using this forum to have someone else do your design is proscribed."
"You are going to have to find a person in your office who will help you understand basic HVAC questions.This is a web forum, not an HVAC class."
"This is just whistling in the wind.You want this, hire a competent Engineer."
"This is a web forum, not an HVAC class. Find someone in your office to help you."
"Learn to do your own duct calculations. I've been doing this for a very long time, and the largest and most common mistakes I have seen concern air systems."
"You need to hire an HVAC Engineer to help you with this. Don't try to bootstrap this."
"You need to either: find a mentor in your office or hire an Engineer familiar with HVAC."
"This is not a class in thermodynamic, it is a web forum."
"I don't understand the question."
"The blind leading the blind "
"You should probably look this up in your dynamics of fluids textbook."

I am very keen if someone explain me more about technical web-forum purposes.
Thanks

 

[MintJulep]

Willard3:

The site policies that you frequently refer to also state "Members are expected to: Help other members".

The majority of your replies do not comply with this policy.

Since you can't control others adherence to policy perhaps you should consider focusing your effort on your own compliance.