What is a main trunk line HVAC? This type of system incorporates the use of a “trunk line” or series of rectangular ducts that act as a main supply channel throughout the house. From these “trunk lines” come branch ducts (usually round) that extend, in various ways, to the registers which are strategically placed throughout the home.
Do you need a trunk line for HVAC?
There could be a couple of reason why you need to install a trunk line for HVAC. The trunk is sized incorrectly so you need to replace it, building a home, or you just want too. Whatever your reasoning I want to share how to install a trunk line yourself to save you money.
What is the trunk of the HVAC system?
In a home, the trunk of the HVAC system either runs through the ceiling or the basement of the home. These lines usually use round duct pipe or flex duct pipe to carry the air to each room.
What is a main trunk line?
Click to see full answer. Keeping this in consideration, what is a main trunk line? Definition of trunk line. 1 : a transportation system (such as an airline, railroad, or highway) handling long-distance through traffic. 2a : a main supply channel (as for gas or oil) b : trunk sense 5b. Likewise, what is duct Tel?
What is a trunk line duct system?
This type of system incorporates the use of a “trunk line” or series of rectangular ducts that act as a main supply channel throughout the house. From these “trunk lines” come branch ducts (usually round) that extend, in various ways, to the registers which are strategically placed throughout the home. Click to see full answer.
What is trunk line HVAC?
What is a main duct?
What is a main trunk line?
Definition of trunk line 1 : a transportation system (such as an airline, railroad, or highway) handling long-distance through traffic. 2a : a main supply channel (as for gas or oil) b : trunk sense 5b.
What is the main trunk line for a furnace?
So, it comes as no surprise that the trunk line of a heating system is the large duct leading out of the furnace that delivers the massive amounts of air it takes to heat or cool a house.
What is a main duct?
The main supply duct, known as the trunk, carries a high volume of air and is usually comprised of rectangular-shaped sheet metal ducts. Similarly, the return ducts that convey an equal volume of air back to the central unit are also usually rectangular sheet metal.
How do you build an HVAC trunk line?
6:1032:38HVAC: Making Sheet Metal Trunk Duct - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd when you build your duct to take it out and filled and put it together you need to make sure youMoreAnd when you build your duct to take it out and filled and put it together you need to make sure you've got your cleats going the same direction every time.
What is plenum HVAC?
The supply plenum is an air distribution box. It's attached directly to the supply outlet of the HVAC equipment–that is, the outlet that releases chilled or heated air into your home. The air ducts that distribute the air into the individual rooms of your living space all connect to this plenum.
How do you insulate an HVAC trunk line?
7:5918:54Trunk Duct - Insulating and Installing - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd on the package of your duct wrap it will tell you what length you have to cut it based on howMoreAnd on the package of your duct wrap it will tell you what length you have to cut it based on how big of a duct you're going to wrap around.
How many types of HVAC ducts are there?
There are three main types of rigid ductwork: sheet metal ducts, fiberglass lined ducts, and fiberboard ducts.
What is damper in HVAC?
An HVAC damper (also called a duct damper) is a movable plate, located in the ductwork, that regulates airflow and redirects it to specific areas of the home. Dampers are typically used in zoning or “zone control” systems.
What kind of ductwork is needed for central air?
Galvanized steel and aluminum are the most common materials for sheet metal ducts. Aluminum in particular is relatively light and easy to install. They are also the least likely to harbor dangerous molds or growths because they have non-porous surfaces.
How do you make a trunk duct?
1:4337:57How to make a Trunk Duct Reducer - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd you can use a like a true carpenter's square to make sure you get your angles right but I foundMoreAnd you can use a like a true carpenter's square to make sure you get your angles right but I found you know you can pretty much use anything that's laying around I've got a piece of wood here.
Should I insulate ductwork in basement?
Instead, use mastic, butyl tape, foil tape, or other heat-approved tapes. Look for tape with the Underwriters Laboratories (UL) logo. Remember that insulating ducts in the basement will make the basement colder. If both the ducts and the basement walls are not insulated, consider insulating both.
Should I insulate ductwork in garage?
Keeping your garage well maintained can give you extra storage for many things. But it's not easy. You have to keep it clean, level the garage slope, and now insulate ductwork. Insulation saves energy and keeps your home temperature in check.
What is ducting in HVAC?
Ducts are conduits or passages used in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. The needed airflows include, for example, supply air, return air, and exhaust air. Ducts commonly also deliver ventilation air as part of the supply air. A duct system is also called ductwork.
What is duct tel?
One may also ask, what is duct Tel? The total effective length (TEL) is the sum of all those fitting effective lengths plus the lengths of straight duct. The lengths of straight sections of duct add up to 36 feet for the supply side and 13 feet for the return side. The fittings add up to 290 feet and 85 feet respectively.
How does a trunk work?
The trunk will come to an end where the air will collect and escape through the branches.
What is a trunk made of?
The trunk is made of solid metal and the branches are made of flex duct. Since the trunk will carry all of the air into the house, it should remain straight and undamaged in order to maximize its airflow capacity. The branches are made of flex duct. They are flexible to allow for maneuvering through the house in order to allow it to get ...
What is the trunk and branch system?
The trunk and branch system is part of the HVAC duct design that will help the airflow spread evenly to different rooms within the house. The trunk acts as a large stem that sends the air through the smaller branches at the end.
Why are air vents flexible?
They are flexible to allow for maneuvering through the house in order to allow it to get the air to reach its final destination. There should not be any holes through the trunk or branches which could compromise the airflow throughout the house.
Is trunk and branch system good for a 2 story home?
Although a trunk and branch system is not used in all cases, it is a good option to use, particularly for homes that are no more than 2 stories high. For homes that are more than 2 stories, there ...
Why do you need a trunk line for HVAC?
There could be a couple of reason why you need to install a trunk line for HVAC. The trunk is sized incorrectly so you need to replace it, building a home, or you just want too. Whatever your reasoning I want to share how to install a trunk line yourself to save you money. Because it could save you thousands!
How to attach trunk line to wood?
Attach trunk line to wood using 1.25″ screws ( use two for both sides) but DO NOT over tighten.
Can you install a trunk line?
Once you have all your supplies you can install the trunk line. The company that we used supplied all the metal pieces needed for the trunk line. They also gave us a paper that showed us where to place each trunk piece.
Can an HVAC tech install a furnace?
It was not hard but they both needed to be adjusted for the elevation & test levels to work properly. So if you do not know someone that is an HVAC tech, hire a PRO to install them! You could have them placed before hand and have the PRO hook everything up but call the company first to see if they will do that.
What is the trunk line of a furnace?
So, it comes as no surprise that the trunk line of a heating system is the large duct leading out of the furnace that delivers the massive amounts of air it takes to heat or cool a house. This main trunk or distribution line often runs the length of a house and is punctuated by dozens of smaller feeder ducts that direct air into other areas ...
What is trunk line?
What is a Trunk Line? The word trunk often conjures up images of big things carrying lots of stuff: Car trunks crammed with suitcases, travel trunks packed with clothes, elephant trunks full of water.
Where is the trunk line located?
If a house has a basement, the trunk line is usually located there, but in warmer regions or areas where houses lack basements, trunk lines can run in the attic area .
Why do trunk lines taper?
As trunk lines move further away from the furnace, they often taper in size for greater efficiency. A trunk line must be sized properly for greatest efficiency— a calculation best left to the pros.
How many supply branches are connected to main trunk before a reducer changes duct size?
Reducer - usually 3 or 4 supply branches are connected to main trunk before a reducer changes duct size. Can be rectangular, square, or round.
What is a supply plenum?
Supply Plenum - usually on top of air handler for the initial distribution of conditioned air through connected ductwork.
What adds friction loss to a duct system?
All duct fittings, ells, tees, reducers, take-offs, etc., add a certain amount of friction loss to an hvac system. Even the straight ductwork in a system adds a certain amount of friction loss.
What is ductwork in HVAC?
Ductwork is simply an air delivery system. A delivery system for all forced air systems, furnace or air handler, heating or air conditioning, or both.
What is stack head?
Stack head - a boot for a wall register.
What is friction loss in ducted air?
Each component of the ducted air delivery system, from the air handler to the registers, adds a certain amount of resistance to the airflow . This resistance is friction loss .
How wide should ductwork be?
So if you make the duct 8" tall, it needs to be at least 29" wide. THere's no harm...at all is oversizing the ductwork if you have room. I'd oversize it by a few inches at least above what it recommends.
How many BTU per ton?
An easy way I found to figure airflow after getting the required Btuh per room is: 12,000-Btu per ton / 400-CFM per/ton is 30-Btuh, per (CFM) Cubic Foot per Minute of airflow.
What is trunk line HVAC?
What is a main trunk line HVAC? This type of system incorporates the use of a “trunk line” or series of rectangular ducts that act as a main supply channel throughout the house. From these “trunk lines” come branch ducts (usually round) that extend, in various ways, to the registers which are strategically placed throughout the home.
What is a main duct?
One may also ask, what is a main duct? The main supply ducts are attached to this and typically run to the end of the home. The size of them is reduced as necessary to maintain adequate air flow. The branch ducts attach to the main ducts and carry the conditioned air to the individual registers.
