Amazing, yet in the wild I yet to see all of this being followed. The combination of making money, time vs speed and the unique challenge of each house... ducting
This is great. As a homeowner i am trying to understand my my current system preforms so poorley. I hope true professionals like you take over the industry some day as it is obivous the "professionals" who installed my system had none of your knowledge.
I can show you. The unit needs to be prepped correctly , even that's never done right. You need clean surface should be masticd. Most important spray glue,! Then your metal tape. Needs to be 3 layers. Now ducts do not need to be slid wayyy on. Its best like half a finger . Then you have a good amount of bite room for your tapes to bond. Make sure.your outter liner is curled back so the insulation is nice and tucked in, now spray glue and duct tape . A couple layers and you are set. That is correct . Not no Dam zip tie no spray glue etc..
Another excellent video that is very informationally accurate and easy to watch and understand. HVAC guys, watch these and learn. The trade is installing the majority of duct systems totally wrong! Watch his video on fittings, important information. As I say in class, “compressors don’t die,… there MURDERED. And bad duct systems are a serious part of the problem. Thanks!
I have high static pressure on a new 3.5 ton heat pump. I know for sure the flex duct is the issue. I have two 12" coming out of the supply in opposite directions. I know I need an 18" for a 3.5 ton heat pump. I did a diagram layout of the duct in the attic. What would happen if I just replace the two 12" to 18"? Ignoring the downstairs, because everything is between the walls. The problem was even worse with an undersized return. The original and only return was a 24x18. The total static pressure on the unit was .9 W.C. I was able to drop the TESP to .66 by making the return 30x24. Since there is so much static pressure and the unit TESP is a .2 and I need an 18" for a 3.5 ton for 1400 CFM. How big does the supply plenum should be and what shape? Should the supply plenum split to 3 18" going out to each of the 3 distribution boxes? Do the other three distribution boxes also need to be larger? Looking at the triangle shaped supply plenum I have very little room up for a rectangle plenum. I think a 3 feet ductboard supply plenum should work. There is a foot from the Air handler to the ceiling and I think 2 feet from the attic floor to the roof. Now I am looking at two types of designs. Design #1 keeps the 18" ducts straight by having a single 18" coming out of the supply and then a distribution box splitting it to three 18". The sides would be coming out straight to the to side boxes and one going to the third box with a slight curve. Design #2 splits to three right at the supply plenum and goes to each box individually, but all three will have a slight curve. I will not be using any metal plenums..... it will be all flex duct and ductboard boxes, because of budget. I am not trying to make a perfect system, but trying to remove the restriction from the 12" undersized ducts installed and replacing the flex duct that was patched with mastic with new ones. Another question about the installation..... I have the flex duct running up and strapped to the roof for support. Since the supply plenum is low to the floor due to the roof..... Can the flex duct be run on the attic floor? Can you tell me which layout makes more sense and less restrictive? Thank you. Layouts: Current i.ibb.co/Ld9kmPM/Flex-Duct-Layout-and-Size.jpg Option #1 i.ibb.co/GHyS00g/2022-07-05-0002.jpg Option #2 i.ibb.co/PNN8mSB/2022-07-05-0001.jpg Air Handler Specs ibb.co/17VvF4B Video of attic th-cam.com/video/iInIN89q8GU/w-d-xo.html
How do I know the maximum airflow, CFM, that can be handled by some 6” flex duct I have in my attic, if I put in a booster fan to be able to increase aire flow at certain times? The duct says 4000 FPM maximum, it’s 6” duct and I’ve got about 15’ of duct run before the booster fan and then 15’ after the fan to the vent? At top speed the fan says it is 400 CFM. I don’t want to damage the duct work. Thanks in advance for any help on this.
My living room has two air vents coming from one air duct. I'm not sure how to calculate to figure out the duct size. The cfm is 300.8 I believe and the distance is 17ft to the split. The 4 ft and 5ft to the air vents
It's just flex man pull her tight to get her right if you gotta make a turn do it gradule strap her with cloth strap only make sure there's atleast 1 strap regardless how short the run is cut in a circle around the insulation stick your blade in to pierce the liner cut the wire give her a yank and she pops right off clean and smooth tuck the insulation back into the liner run that liner down around the collar on the trunk line tape her up then pull down the insulation that was bunched up double your tape up side by side run one wide piece on top one on bottom and each sides and that's it from a installers standpoint that's all that has to be done there isnt time to be worrying about the little things I'm more worried about trying to get the job done so I can possibly have Sunday off cause we have another one lined up to finish roughing in by the end of the week and I just hit OT at 9am Thursday morning with a helper that's talking about quitting theres just bigger fish to fry than worrying about what inch flex to that angle I'm worried about turning I'm sure this video was intended for people higher up on the totem pole though I'm just trying to shed some light from where most of us people installing this stuff stand at
Amazing, yet in the wild I yet to see all of this being followed. The combination of making money, time vs speed and the unique challenge of each house... ducting
This is great. As a homeowner i am trying to understand my my current system preforms so poorley. I hope true professionals like you take over the industry some day as it is obivous the "professionals" who installed my system had none of your knowledge.
Its sad i went to school for two years and have been in the field 2 years i see things that are just awful kills the trade
I can show you. The unit needs to be prepped correctly , even that's never done right. You need clean surface should be masticd. Most important spray glue,! Then your metal tape. Needs to be 3 layers. Now ducts do not need to be slid wayyy on. Its best like half a finger . Then you have a good amount of bite room for your tapes to bond. Make sure.your outter liner is curled back so the insulation is nice and tucked in, now spray glue and duct tape . A couple layers and you are set. That is correct . Not no Dam zip tie no spray glue etc..
You live in a mobile home or a housr
Another excellent video that is very informationally accurate and easy to watch and understand.
HVAC guys, watch these and learn. The trade is installing the majority of duct systems totally wrong!
Watch his video on fittings, important information.
As I say in class, “compressors don’t die,… there MURDERED. And bad duct systems are a serious part of the problem.
Thanks!
I have high static pressure on a new 3.5 ton heat pump. I know for sure the flex duct is the issue. I have two 12" coming out of the supply in opposite directions. I know I need an 18" for a 3.5 ton heat pump. I did a diagram layout of the duct in the attic. What would happen if I just replace the two 12" to 18"?
Ignoring the downstairs, because everything is between the walls. The problem was even worse with an undersized return. The original and only return was a 24x18. The total static pressure on the unit was .9 W.C. I was able to drop the TESP to .66 by making the return 30x24. Since there is so much static pressure and the unit TESP is a .2 and I need an 18" for a 3.5 ton for 1400 CFM. How big does the supply plenum should be and what shape? Should the supply plenum split to 3 18" going out to each of the 3 distribution boxes? Do the other three distribution boxes also need to be larger?
Looking at the triangle shaped supply plenum I have very little room up for a rectangle plenum. I think a 3 feet ductboard supply plenum should work. There is a foot from the Air handler to the ceiling and I think 2 feet from the attic floor to the roof. Now I am looking at two types of designs. Design #1 keeps the 18" ducts straight by having a single 18" coming out of the supply and then a distribution box splitting it to three 18". The sides would be coming out straight to the to side boxes and one going to the third box with a slight curve. Design #2 splits to three right at the supply plenum and goes to each box individually, but all three will have a slight curve. I will not be using any metal plenums..... it will be all flex duct and ductboard boxes, because of budget. I am not trying to make a perfect system, but trying to remove the restriction from the 12" undersized ducts installed and replacing the flex duct that was patched with mastic with new ones.
Another question about the installation..... I have the flex duct running up and strapped to the roof for support. Since the supply plenum is low to the floor due to the roof..... Can the flex duct be run on the attic floor? Can you tell me which layout makes more sense and less restrictive? Thank you.
Layouts:
Current
i.ibb.co/Ld9kmPM/Flex-Duct-Layout-and-Size.jpg
Option #1
i.ibb.co/GHyS00g/2022-07-05-0002.jpg
Option #2
i.ibb.co/PNN8mSB/2022-07-05-0001.jpg
Air Handler Specs
ibb.co/17VvF4B
Video of attic
th-cam.com/video/iInIN89q8GU/w-d-xo.html
Keep up the good work
Outstanding and very informative 👏
Glad it was helpful! Thanks Jesse!
good job!
Thank you! Cheers!
How far away should a wye connect be from the plentum
The presentation is very usefull
Thanks Daniel! I appreciate you subscribing too!!!
How do I know the maximum airflow, CFM, that can be handled by some 6” flex duct I have in my attic, if I put in a booster fan to be able to increase aire flow at certain times? The duct says 4000 FPM maximum, it’s 6” duct and I’ve got about 15’ of duct run before the booster fan and then 15’ after the fan to the vent? At top speed the fan says it is 400 CFM. I don’t want to damage the duct work. Thanks in advance for any help on this.
My living room has two air vents coming from one air duct. I'm not sure how to calculate to figure out the duct size. The cfm is 300.8 I believe and the distance is 17ft to the split. The 4 ft and 5ft to the air vents
What’s the diameter of the duct from both vents, if it’s 6” you’re fine
@@vincentdelaney1900 that's what I'm trying to figure out
Is it me or does the sound not match up with the video???? 🤔
uh oh! I created this video some time ago, and can assure you that the content and audio have improved since! Sorry for the nuisance...
If run 8 inch flex from air plenum and tee off too 6 inch flex what would be the cfm
It's just flex man pull her tight to get her right if you gotta make a turn do it gradule strap her with cloth strap only make sure there's atleast 1 strap regardless how short the run is cut in a circle around the insulation stick your blade in to pierce the liner cut the wire give her a yank and she pops right off clean and smooth tuck the insulation back into the liner run that liner down around the collar on the trunk line tape her up then pull down the insulation that was bunched up double your tape up side by side run one wide piece on top one on bottom and each sides and that's it from a installers standpoint that's all that has to be done there isnt time to be worrying about the little things I'm more worried about trying to get the job done so I can possibly have Sunday off cause we have another one lined up to finish roughing in by the end of the week and I just hit OT at 9am Thursday morning with a helper that's talking about quitting theres just bigger fish to fry than worrying about what inch flex to that angle I'm worried about turning I'm sure this video was intended for people higher up on the totem pole though I'm just trying to shed some light from where most of us people installing this stuff stand at
and that why there are so many poor installations...