DO YOU STRETCH YOUR FLEX DUCT BEFORE ITS INSTALLED? #shorts

All you have to do is hook the one end and when you hook the other end, pull it tight.

Back when i did new construction, Whenever it was time to run the crawlspace ducts, we would always stretch the duct out, attach the boot, wrap our hanger strap at regular intervals, and position it at the crawlspace entrance. that way, the duded or dudes in the crawlspace could just drag each run down as needed and have it fully ready for installation and hanging back to the distro box or trunk as needed. Not only was it faster that way, but the results were always better on the end product.

Always !

On the paper in the duct, it says to stretch it for like 2 minutes. Helps with air flow.

I’ve never read it
But my Mexican instructor told me
Jálale !

Always stretch the flex

Mine are stretched

What R rating should one get , I've seen R6 & 8?

I mean, it comes in a 3 foot box that has 25 feet in it so you would think it would be self-explanatory.

Installed miles of that stuff.. yes, pulling it tight is important!

Mine waant installed properly

😂 r u new to hvac?

Yes, because the metal coils are supposed to work like a turbine. If not, it will impede cfm flow.

Makes it so much easier dragging through an attic with a couple feet of clearance crawling😂

Yep, stretch the bladder, strap it about every 3 foot back in my install days. Nailed long boards in the attic to give us something to strap too.

I’ve read the instructions but never seen another person ever follow them

Mannnn, when I was weee young apprentice, a vet told me to let the flex, "relax" , hence pull it out and pull until taught from both ends!!! 😂, brings backs some memories!! Hard Work!!

Never heard that. But I've heard most people dont ever pull the liner tight and put way too many curves in it, having a very poor install

I do dislike installing that stuff

Flex duct is cheap

Absolutely - stretch flex before installing!! 👍🏻👍🏻

Never heard or read it but alwaya noticed the 3 layers never line up for a full 25 feet unless you stretch it out.

I never knew this but it makes sense. Thanks!

I hated making them things 😠

The flex liner will fold over inside and completely block air flow if you don't stretch it.
As an installer we either get two people to tug on the liner to completely unfold the liner to make it straight ,or we staple the liner to a stud and one man would pull the other end .

Yes, I used to be a commercial HVAC installer. I would always stretch it out.

SILLY YUPPIE

I need to stretch my head to get better memory out of it.

Nah I don't do that

Improve that friction coefficient!

99 percent of installers take the box under the house with them

I was taught in my first few weeks to pull the flex tight.t the journeyman and me would get it out and each grab an end and pull it tight. Still dothat now and never have issues with it. I wouldnt do a whole system in it but i would make the duct runs to each supply with it with the main trunk being metal.

Yes sir.
I always tell my guys to open the ducts and let them stretch mean while there doing cuts in the ceiling.

Sometimes there’s no time but definitely 12” and up

Ive heard that the old school flex had to he stretched. But not the flex from the last few years.

Did residential HVAC about 25 years ago. Never heard that...

I never knew that. I usually do try to stretch it out as I install it, but this makes sense. I personally like flex duct. One, it’s insulated, and two it’s seamless. There’s no reason it shouldn’t be acceptable, and in a renovation situation, would you rather have flex duct or nothing at all? 😂 we all know when remodelers come across a return or a register in their way it just gets deleted.

Alright ... nobody has said it but ,
If you give it the little blue pill it will stretch all by itself

The HVAC company that did our work left kinks and sags everywhere 😡

Yup, bung a 2gal in the far end and jack the near end on a shop heater with no heat on... tada!

The good ol’ “1..2..3 , pull” 😂 especially with that damn 8” duct for some reason 💀

Always read the manual! Gotta freak that flex out first.

Yes I have, my journeyman co-worker taught me. I was just going to throw it up but he stopped and told me about this! Great vid🎉

Used to stretch them out when I had someone else free to help pull the other end. Helped.

It’s to reduce turbulence

Just had my hvac replaced. I'll check with the installers if they stretched my ductwork

Yes

Yes, and remember to lick it before you stick it

It does help

Yep!! my install lead Joe taught me that on my first day 11 years ago miss that bitter bastard lol

I do it every time I stretch it out on both ends to make sure I get maximum. Use out of it and plus it straightens out the inner lining