Let’s Play a Game About Commercial Chimney Fans!

“One of These Things is Not Like the Other”... Remember that game?

If you’re comparing the two commercial chimney fans below and can’t find any substantial difference, you are right. You don’t need to go back to preschool to realize there is NO difference in design. They are the same product.

Only... the chimney fan on the right was handcrafted by ENERVEX many years ago. The fan on the left was built very recently by a manufacturer of fans and chimney systems who decided it was such a great design, they produced one exactly like it; slapped the red “NEW” stickers on it; and played it off as their own idea. I examined it at the ISH show last week in Frankfurt, Germany; it’s a carbon copy inside and out.


At first I wanted to say “WTF”? But then I remembered Oscar Wilde’s (and Mom’s) words:

“Imitation is the sincerest form of flattery that mediocrity can pay to greatness.”

They were right… Only… Kutzner + Weber, you missed something here.

There IS a difference. And that is, you do not match our level of real-time, quality tech support, seamless integration with our other commercial chimney system products (they were designed for each other), or the flexible sizing and mounting options of the TDF chimney fan. So I guess we should thank you. We’re flattered.

Now I leave our readers with another fun game… Who can think of the best alternate acronym for TDF?

  • Total Duplicate Fan?
  • Too Dang Fake?
  • Tactless Design Feint?
  • Thought-out Deliberate Forgery?


Kirsten Reenberg on Mar 23rd, 2017
That kind of factories will allways try to copy the greatest intentions, but they won't last. The customers ALSO needs the service and thorough knowledge og the product.

Ron Predmore on Mar 23rd, 2017
totale Deutscher fehler

Thomas Rossmann on Mar 30th, 2017
eventhough these are copies but they are not field checked in combination with K&W' questionable controls. Green bananas garnished with lemons!

Sam on Apr 7th, 2017
WTF the KW fan is realy, the enervex fan is a 3D draft only???

Steen Hagensen on Apr 7th, 2017
Sam, the KW fan is real, except when you see it live, the trained eye can see it is still a "dummy". You are correct that our illustration is 3D - and very nice, if I may say. What is real is that our TDF fan has been installed in hundreds of applications in the US, Canada, Middle East and Far East. That is more than you can say about KW's "dummy". In reality the TDF fan has been in existence for over 5 years and it is probably one of KW's sales people - who has visited our factory in the past when he worked for our partner in Germany - that introduced his new bosses to our unique design and impressive product. I hope he didn't pretend it was his design. That would put him a very unfortunate situation.

Terry on Apr 7th, 2017
So much for German ingenuity!