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Sustainable Building Forum > Sustainable Building Topics > Sustainable Building Materials > New Energy Saving Product - VERY Clever
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Author Topic: New Energy Saving Product - VERY Clever  (Read 8579 times)
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BG1
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« Reply #15 on: November 21, 2007, 11:07:11 AM »
It's funny how such a basic premise as unimpeded airflow has taken so long to work itself into commercial products in the market.  (!)

Yes clever.  However had the makers of these systems done their homework in the first place, would be a moot point.
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Green Guy
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« Reply #16 on: November 25, 2007, 07:22:21 AM »
You are right BG1 regarding doing it right.

When I first saw FlexFlow Elbow I did the "flat forehead"!

I would like to see more simple yet effective products like FlexFlow Elbow on the market.

Imagine all the energy that could be saved if all flexible ducts installed worldwide were unimpeded!
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HVAC 1958
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« Reply #17 on: December 08, 2007, 07:19:18 AM »
I first saw FlexFlow Elbow at the 2002 ASHRAE show in Atlantic city.

Our company made it a standard to install them on diffusers that had 90 degree bends.

The mechanical engineers we work with love them.

Cheapest and fastest way to guarantee airflow through the flex duct.
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Duct Dog
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« Reply #18 on: January 15, 2008, 09:16:59 AM »
We use these Flex Flows all the time. You always have the right size because the they are adjustble. Cutomers like them because they can see where their airflow is better.
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Former Mech Engineer
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« Reply #19 on: January 22, 2008, 07:06:25 AM »
VERY clever indeed! Looks like this product will work on commercial buildings or homes. I checked the flexible duct in my attic. All of my ducts are choked off. Definitely need to eliminate a few kinks where the ducts are connected to taps and register boots. Seems simple enough based on the youtube video.
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Build Right
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« Reply #20 on: February 15, 2008, 03:18:06 PM »
Anyone know where I can buy FlexFlow Elbows in Southern California?
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HVAC 1958
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« Reply #21 on: February 28, 2008, 01:50:47 AM »
Hey Build Right,

I know FlexFlow Elbow is made by Thermaflex and their website is www.flexflowelbow.com.

Hope this helps!
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ASHRAE Member
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« Reply #22 on: April 23, 2008, 08:13:41 PM »
I noticed the recently published ASHRAE Guides to energy efficiency for schools, retail buildings and small office buildings elude to installing a "durable support" when using flexible duct to make an elbow.

This evidently is the FlexFlow Elbow mentioned above.

The description in the guides coincides with the written spec on the FlexFlow website.

My experience has been - kinked flex duct is just like your kinked garden hose - no flow.

Great to see a product address a major concern in the industry.
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Green Guy
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« Reply #23 on: November 21, 2008, 02:37:06 AM »
Flexflow elbow was just listed in GreenSpec.

Here's a link.

http://greensource.construction.com/products/0811-2.asp
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mvhomebuilders
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« Reply #24 on: November 27, 2008, 01:49:30 AM »
I am a builder in Northeast Georgia and am currently requiring my HVAC contractor to install FlexFlow elbows. I build Energy Star certified homes and improper air flow to the supply and return registers is the biggest reason systems fail to be Energy Star labeled. Collapsed elbows and joints is the main reason. A system may be rated for 1500 cfm but will never attain that flow level if the duct work is restricted. Therefore, the sytem will not operate efficiently and the home may not be heated or cooled evenly. Builders who build "green" certified homes are audited by third party energy raters. The air flow of the HVAC system is one of the biggest areas that they monitor. I am promoting the FlexFlow in my area. Would be glad to communicate with other builders/HVAC installers.

http://www.mvhomebuilders.com
mvhomebuilders@bellsouth.net
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