the sheet metal worker in me wants to replace everything with metal and take-offs, the sheet metal worker in me does not wanna insulate it though hahah
Good work. I have a similar fate, but I got ass bestos to deal with. Have to do it on my own because no HVAC joints will touch it. I don't have much. Just 5 runs off of a plenum, but I have to make a new plenum. Previous owner went crazy cutting 5 huge holes and running the ducts as if nobody was every going to use a basement. Yep, there is a dent from years of people bumping their heads. Going to make my own plenum then tee it off into some flexy duct to get me home. Just have to get a respirator and a few poopy suits to not die.
Nice job! - I'm looking to the same thing. Where did you get the flexible ducks from? or where do you recommend getting the flexible ducks? I need to go into the attic to make all the changes.
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 ua-cam.com/video/iInIN89q8GU/v-deo.html
Ductboard is garbage. Use sheet metal plenums and ducts. .2 tesp is what your air handler had in a factory with no ducts attached. .5 static is fine with a full duct system. Get the static down on the return side by enlarging or adding an additional return and you should be fine.
@@BerendaSlade no not necessarily. Unless the house is very old. Or you notice obvious damage on the ducts. My house is from 1991 so I went ahead replaced them
You have the perfect numbers 777 great work , great video.ill consider your 777 a blessing and turn it into 778 may your vids turn into million 777 million views soon .be well Good Lord Bless you and all your Love ones...
I’m a novice and no budget to pay for this renovation so I am learning my renter failed to mention a rat infest😊so mine must go from system To register they were living in the duct work it was approximately 6-8 months to totally destroy my system. Someone said get it gleaned but lol must have been 30 foot old hollowed out duct gross to removed mask up and go if wish me luck it’s October we he made it through fall but he has to have heat 😂
Hola Rafael, gracias por tus videos. Pregunta, donde puedo comprar conductos de aires como los que pusiste a un buen precio que no sea en Lowe's o Home Depot. Ellos les tienen muy caros. Gracias y sigue haciendo videos. Gracias.
@@jlc2093 Gracias por tomarse el tiempo de exponer su criterio. Pero permitame decirle que no soy un tecnico de aire acondicionado lo que me limita a utilizar la terminologia tecnica . Lo que puedo decirle que la palabra que utilice "conducto" de acuerdo a la Acadermia Real espanoloa tambien puede utilizarce la palabra "conducto de aire" ya que es un sinonimo. Le adjunto la referrencia para que pueda ud entender que no es mi opinion , sino, la opinion de la Real Academia. Espero que pueda apreciar mi ilustracion. "Los conductos de aire son los elementos de una instalación de acondicionamiento de aire o climatización, a través de los cuales se distribuye o recircula el aire tratado entre el aparato acondicionador y los espacios acondicionados , o bien, en una de ventilación, se extrae el aire viciado de un local o se le insufla aire nuevo desde el exterior. Para cumplir esta misión de forma práctica, los conductos deben dimensionarse dentro de ciertas limitaciones preestablecidas, relativas al espacio disponible, velocidad, nivel sonoro, pérdidas de carga, pérdidas o ganancias de calor y fugas." conducto Del lat. mediev. conductus. 1. m. Canal, comúnmente tapado, que sirve para dar paso y salida a las aguas y otras cosas. 2. m. Cada uno de los tubos que se hallan en los cuerpos de los seres vivos y sirven a las funciones fisiológicas. 3. m. Conducción de aire o gases construida con chapa metálica u otro material. 4. m. Mediación o intervención de una persona para la solución de un negocio, la obtención de noticias, etc. 5. m. Medio o vía que se sigue en algún negocio.
Man I need to redo my entire house and I have no hvac experience but really would like to try to tackle it myself with a buddy who does commercial hvac. My stuff is in the attic though 🥲
Hi Rafael, thank you for your video, it looks amazing. I have a question. I just purchased an old house with crawl space that is very wet and low, but the duct work is in bad shape also, I'm wondering if I should incapsulated it and if I do, do yo think that is a good idea to put AC vent there since will be incapsulate? I don't like the idea to have a dehumidifier in the crawl space, but I might be wrong. Thank you
Thank you for the comment, i agree it came out good. I get better air flow inside the house. I think its a great idea to seal the crawl space . I hear it helps the energy bill also. And yea its a requirement to add a supply run to the crawl. I say a 4in to 6in supply depending on the crawl size
I've watched a lot of Crawl Space Ninja's videos about encapsulation. We have a lot of mildew in the crawl space and I live in a humid environment. My wife and kids are susceptible to migraines so I'm in the process of encapsulating it myself because their allergies stimulate their migraines. I'm very busy at my job so this has been a long process but I see a lot of benefits to it already. First, I found white mold on the joists before I started this process because the humid air would come in through the vents. I closed the vents off and I added an aprille aire humidifier and it's done a great job of keeping the humidity down to 45%. Then I added an exhaust vent to remove some of the mildew since I don't have it fully encapsulated yet. It works but it obviously removes heat from the upper floor of the house so I run it on a timer. I have finally finished putting foam in the rim joists which has helped our heat immensely this winter. I hated doing it but it's done and I can tell a difference as our furnace has not been running as much this season. Next I'm going to put 2" foam on the concrete walls down there, fog the joists to kill the mold, vacuum/sand the mold off, install the plastic. Ugh, it's a lot of work and I'm doing 1,800 sqft by myself.
Hi Rafael, I need help on a 2 story townhouse total of 1400 sq as well, same problem as yours.. what’s the metal box call so I can order it and the sealant to use
@@carrosdiecast3650 I bought my 1993 4 bedroom 2 story house 2 years ago. The filter was laying on the blower. It still has the stock Rheem heater in the attic.
the sheet metal worker in me wants to replace everything with metal and take-offs, the sheet metal worker in me does not wanna insulate it though hahah
Good work. I have a similar fate, but I got ass bestos to deal with. Have to do it on my own because no HVAC joints will touch it. I don't have much. Just 5 runs off of a plenum, but I have to make a new plenum. Previous owner went crazy cutting 5 huge holes and running the ducts as if nobody was every going to use a basement. Yep, there is a dent from years of people bumping their heads. Going to make my own plenum then tee it off into some flexy duct to get me home. Just have to get a respirator and a few poopy suits to not die.
I was quoted up to 33k to change my home’s duct work. 😮 Time to learn!
Thanks. I really enjoyed watching this. Nice work.
NICE!!! Your house is coming together!!
Thank you :) hard work pays off
Come do my crib next. My crawlspace is not as big though lol
Good video bro but you got to pull that flex tighter you should be able to see your reflection on it. And did you use mastik
Nice job! - I'm looking to the same thing. Where did you get the flexible ducks from? or where do you recommend getting the flexible ducks? I need to go into the attic to make all the changes.
Home Depot sells it
I put a heavy tarp over the dirt floor to keep the moisture and smell etc. down.
@@TrevorPierson absolutely later i put down a plastic all under the house thanks for the advice
Homeowner special right there
may you please post material list that did you use to replace the ducts
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
ua-cam.com/video/iInIN89q8GU/v-deo.html
Are you still looking for some answers to your questions? Might I also ask if so, where roughly you’re located and the size of your house?
Ductboard is garbage. Use sheet metal plenums and ducts. .2 tesp is what your air handler had in a factory with no ducts attached. .5 static is fine with a full duct system. Get the static down on the return side by enlarging or adding an additional return and you should be fine.
U da Man. MAN☝️
@@anthonywilkins113 thank you
One word
SATISFACTION
What is the average cost of replacing air ducts in an older home 1400 square ft built in early 50's?
It really depends but I got mine done for 6k and they pulled all the old metal swamp cooler ducts and configured a new system for 6k USD
Nice job
@@nataliedigiovanni4863 thank you !
Beautiful!!!!
My question is, when replacing a new HVAC should they change that as well?
@@BerendaSlade no not necessarily. Unless the house is very old. Or you notice obvious damage on the ducts.
My house is from 1991 so I went ahead replaced them
Good video thanks
@@thomasgregory8941 thank you
how much does something like this cost ball park in the industry for a single family home 1400sqft?
What is the proper way in creating a Y using flexible ducting?
@@donovanpl by using a metal wye for example 8x6x6 , 9x7x7. Inlet usually bigger in diameter
You have the perfect numbers 777 great work , great video.ill consider your 777 a blessing and turn it into 778 may your vids turn into million 777 million views soon .be well Good Lord Bless you and all your Love ones...
wish it was longer
I’m a novice and no budget to pay for this renovation so I am learning my renter failed to mention a rat infest😊so mine must go from system To register they were living in the duct work it was approximately 6-8 months to totally destroy my system. Someone said get it gleaned but lol must have been 30 foot old hollowed out duct gross to removed mask up and go if wish me luck it’s October we he made it through fall but he has to have heat 😂
Hola Rafael, gracias por tus videos. Pregunta, donde puedo comprar conductos de aires como los que pusiste a un buen precio que no sea en Lowe's o Home Depot. Ellos les tienen muy caros. Gracias y sigue haciendo videos. Gracias.
Se llaman ductos
No conductos
Ni que estuviera en un salón de clase Guay
@@jlc2093 Gracias por tomarse el tiempo de exponer su criterio. Pero permitame decirle que no soy un tecnico de aire acondicionado lo que me limita a utilizar la terminologia tecnica . Lo que puedo decirle que la palabra que utilice "conducto" de acuerdo a la Acadermia Real espanoloa tambien puede utilizarce la palabra "conducto de aire" ya que es un sinonimo. Le adjunto la referrencia para que pueda ud entender que no es mi opinion , sino, la opinion de la Real Academia. Espero que pueda apreciar mi ilustracion.
"Los conductos de aire son los elementos de una instalación de acondicionamiento de aire o climatización, a través de los cuales se distribuye o recircula el aire tratado entre el aparato acondicionador y los espacios acondicionados , o bien, en una de ventilación, se extrae el aire viciado de un local o se le insufla aire nuevo desde el exterior. Para cumplir esta misión de forma práctica, los conductos deben dimensionarse dentro de ciertas limitaciones preestablecidas, relativas al espacio disponible, velocidad, nivel sonoro, pérdidas de carga, pérdidas o ganancias de calor y fugas."
conducto
Del lat. mediev. conductus.
1. m. Canal, comúnmente tapado, que sirve para dar paso y salida a las aguas y otras cosas.
2. m. Cada uno de los tubos que se hallan en los cuerpos de los seres vivos y sirven a las funciones fisiológicas.
3. m. Conducción de aire o gases construida con chapa metálica u otro material.
4. m. Mediación o intervención de una persona para la solución de un negocio, la obtención de noticias, etc.
5. m. Medio o vía que se sigue en algún negocio.
@@17martrader deja decirte que no leí nada de esa mamada. Pero que bueno que perdiste tu tiempo buscando y escribiendo todo eso como un baboso 😂 😂 😂
Hey Carlos. Thanks for the video. Where are you located? How old is the house?
apoco te tomo un diaaaaaaaaaaa? wow bravo!
Man I need to redo my entire house and I have no hvac experience but really would like to try to tackle it myself with a buddy who does commercial hvac. My stuff is in the attic though 🥲
@@chrisd5758 i would highly recommend it! You got this! I also did some attic work i just didn't record it. You will be glad once its done
I also do this work in KSA ❤
Hi Rafael, thank you for your video, it looks amazing. I have a question. I just purchased an old house with crawl space that is very wet and low, but the duct work is in bad shape also, I'm wondering if I should incapsulated it and if I do, do yo think that is a good idea to put AC vent there since will be incapsulate? I don't like the idea to have a dehumidifier in the crawl space, but I might be wrong. Thank you
Thank you for the comment, i agree it came out good. I get better air flow inside the house.
I think its a great idea to seal the crawl space . I hear it helps the energy bill also. And yea its a requirement to add a supply run to the crawl. I say a 4in to 6in supply depending on the crawl size
@@carrosdiecast3650 Thank you
I've watched a lot of Crawl Space Ninja's videos about encapsulation. We have a lot of mildew in the crawl space and I live in a humid environment. My wife and kids are susceptible to migraines so I'm in the process of encapsulating it myself because their allergies stimulate their migraines. I'm very busy at my job so this has been a long process but I see a lot of benefits to it already. First, I found white mold on the joists before I started this process because the humid air would come in through the vents. I closed the vents off and I added an aprille aire humidifier and it's done a great job of keeping the humidity down to 45%.
Then I added an exhaust vent to remove some of the mildew since I don't have it fully encapsulated yet. It works but it obviously removes heat from the upper floor of the house so I run it on a timer. I have finally finished putting foam in the rim joists which has helped our heat immensely this winter. I hated doing it but it's done and I can tell a difference as our furnace has not been running as much this season. Next I'm going to put 2" foam on the concrete walls down there, fog the joists to kill the mold, vacuum/sand the mold off, install the plastic. Ugh, it's a lot of work and I'm doing 1,800 sqft by myself.
Hi Rafael, I need help on a 2 story townhouse total of 1400 sq as well, same problem as yours.. what’s the metal box call so I can order it and the sealant to use
1. It’s called a plenum.
2. Water based Duct sealant
How much should someone expect to pay if paying a company to do it?
Not sure honestly all depends on the square footage of the house. Seems like all services went up in price.
Are that 12" flex duct is it R6 or 8?
I thought my ducts were dirty.
This ducts were nasty! Like the filters were never changed before
@@carrosdiecast3650 I bought my 1993 4 bedroom 2 story house 2 years ago. The filter was laying on the blower. It still has the stock Rheem heater in the attic.
your so handsome bro 🙂
May I ask how much this job will cost if hire HVAC contractor , what is a fair price to do it.
$5,500 or more
🕷🕸My arachnophobia would never let me.. 🕷 🕸 🕷 🕸 🕷
y nosotros em españa no pode.os poner mas de 1300 cm😢por la perdida de carga
Are u In Houston
Good video if you just want to watch somebody work, but lousy video for explaining how to connect various HVAC ducting.
It’s called Watch & Learn lol
🤣
And Maynor paid for it all 😂
Gorrero
Negative
🤣
How is it a crawl space when you not crawling? 😂😂😂
Gay music
@@AaronPowellvox i agree ! Not many options