Cool idea on the transition box...how do you know how big to make it? My system is 4 ton, 1600cfm but ducted for 1200 cfm, so I need to fix that. I was thinking of feeding 1 - 14" and 2 - 12" flex to 3 different zones of the house and build 3 transition boxes to feed all the room ducts. So...basically 700 and 480 CFM boxes, respectively. I was thinking 1 - 16"x16"x16" cube and 2 - 14"x14"x14" cubes. Would that introduce too much loss in the system?
First; using a cube transition box is not a bad idea however, obtain a duct design done by a professional load calculation company and strictly go by that.
I really dislike the practice of cutting the vent hole in the drywall and leaving the exposed drywall. Air quality is a much greater priority than ever, we should really be sealing up that drywall so that the dust isn't getting picked up by the vents. And for those that want to try and dismiss that concern, you're indeed incorrect. It is a big deal. Yes, there is a lot of dust within a home, including new construction or remodels, but things should also be cleaned far better to remove as much as possible. In addition, sealing air infiltration points from unconditioned spacing is important and that includes these vents, anyhow. Also, I think extra work should be done when extending a duct to ensure that overlapping insulation doesn't separate. Some tape internally and even a zip tie externally. Some movement or shifting when setting the duct or blowing insulation likely will mess it up, even if you've gone through a lot of effort to create "slack" internally. It also looked like you were going to handle it, but when you taped the duct to the collar, the perforation in the lip is exposed. I would have covered that with the tape. The outer tape isn't enough. For air quality, we're talking about microscopic particulates and fiberglass is not something you want in your lungs. And... some better beer. :) Overall a great video, I think you did a great job, it was just things that I get very nit-picky about. You've performed a great service to the community!
to add, the only difference is to include but not limited to: 1. Its in an attic 2. you're crawling around on rafters 3. it's 100 degrees 4. its dusty, dirty and poor air flow, dead mice, rats and if you're lucky a raccoon 5. it's not at hip height, in a conditioned space and you can reach everything 6. you're swimming in insulation 7. you're wearing long sleeve shirts, mask, dickies trousers 8. You're working on sheetrock 9. Everything you touch is wet, because its 100 degrees and you're sweating on everything 10. Your drill battery dies 11. Your head mounted lamp keep slipping and then the battery dies 12. You're doing this for 3 days straight praying for a cloudy day or rain 13. You're going in and out through a scuttle in a closet 14. The customer wonders why this is taking so long and doesn't like you're playing 5FDP 15. The office gives you "Emergency" calls after you're done for the day because you're on-call 16. The office gives you calls because the customer specifically requests you. 17. The office gives you calls because the on-call guy called in for the day. Yea, okay.
Cool idea on the transition box...how do you know how big to make it? My system is 4 ton, 1600cfm but ducted for 1200 cfm, so I need to fix that. I was thinking of feeding 1 - 14" and 2 - 12" flex to 3 different zones of the house and build 3 transition boxes to feed all the room ducts. So...basically 700 and 480 CFM boxes, respectively. I was thinking 1 - 16"x16"x16" cube and 2 - 14"x14"x14" cubes. Would that introduce too much loss in the system?
First; using a cube transition box is not a bad idea however, obtain a duct design done by a professional load calculation company and strictly go by that.
waw im in love this channel the info is fenomenal
Awesome job gents...enjoy the content, keep it coming!
More to come!
I really dislike the practice of cutting the vent hole in the drywall and leaving the exposed drywall. Air quality is a much greater priority than ever, we should really be sealing up that drywall so that the dust isn't getting picked up by the vents. And for those that want to try and dismiss that concern, you're indeed incorrect. It is a big deal. Yes, there is a lot of dust within a home, including new construction or remodels, but things should also be cleaned far better to remove as much as possible. In addition, sealing air infiltration points from unconditioned spacing is important and that includes these vents, anyhow.
Also, I think extra work should be done when extending a duct to ensure that overlapping insulation doesn't separate. Some tape internally and even a zip tie externally. Some movement or shifting when setting the duct or blowing insulation likely will mess it up, even if you've gone through a lot of effort to create "slack" internally.
It also looked like you were going to handle it, but when you taped the duct to the collar, the perforation in the lip is exposed. I would have covered that with the tape. The outer tape isn't enough. For air quality, we're talking about microscopic particulates and fiberglass is not something you want in your lungs.
And... some better beer. :)
Overall a great video, I think you did a great job, it was just things that I get very nit-picky about. You've performed a great service to the community!
to add, the only difference is to include but not limited to:
1. Its in an attic
2. you're crawling around on rafters
3. it's 100 degrees
4. its dusty, dirty and poor air flow, dead mice, rats and if you're lucky a raccoon
5. it's not at hip height, in a conditioned space and you can reach everything
6. you're swimming in insulation
7. you're wearing long sleeve shirts, mask, dickies trousers
8. You're working on sheetrock
9. Everything you touch is wet, because its 100 degrees and you're sweating on everything
10. Your drill battery dies
11. Your head mounted lamp keep slipping and then the battery dies
12. You're doing this for 3 days straight praying for a cloudy day or rain
13. You're going in and out through a scuttle in a closet
14. The customer wonders why this is taking so long and doesn't like you're playing 5FDP
15. The office gives you "Emergency" calls after you're done for the day because you're on-call
16. The office gives you calls because the customer specifically requests you.
17. The office gives you calls because the on-call guy called in for the day.
Yea, okay.
We've been through all of what you have said. That's why duct systems are expensive. (team member)
100 degrees? Must be a crisp fall day in the off season.