Cost Of Metal Duct Vs Flex Duct

Supplier of Galvanized sheet metal duct, hvac duct supplies, air conditioing ductwork, flex duct, round, dampers. Fiberglass Lined Air Ducts Some sheet metal air ducts are lined with an external or internal fiberglass duct liner. Return air drops can cost over $300. No, you won’t get as deeply into your duct system as a commercial company will. This may be in the form of small filters at the return or it can be in a central location where the various returns converge. This in turn creates a small vacuum on the return side. Use with #8 screw for fastening sheet metal components to fiberglass duct. The installer is what makes this a good or bad product. Flexmaster U. FlexaBoot by Thermaflex Replaces expensive and cumbersome rectangular internally-lined sheet metal boots at less than half the cost. US Duct Leakage Testing Ri tRequirements - (SMACNA) Duct Class ½-, 1-, 2-inwg 3-inwg 4-, 6-, 10-inwg Seal Class CB A Sli T Transverse Joints, Seams Sealing Applicable ransverse Joints Only asvese Joints and Seams Jo s, Sea s and All Wall Penetrations Leakage Class (C L) – CFM Leakage per 100 ft2 @ 1 in H 2 O Rectangular Metal 24 12 6 Round. Insulated metal will usually cost more to install these days. 3 Flexible air ducts. Spiral Duct. Flex -VS- Ridged ducting There is not a better or worse as far as flex vs. SEMCO spiral round and flat-oval duct systems provide you with the advantages of automation and mass production without the expense of investing in the required equipment. Then, there are the required accessories, which can add up too. This standard is for flexible plastic and metal heating, cooling ductwork and vent fans such as in your bathroom or kitchen. Metal Duct. The air duct cleaning services should always follow the National Air Duct Cleaning Association’s standards for the procedure. Fabric ducting never needs painting and, to clean these fabric ducts, you can toss them in an industrial sized washing machine and then re-hang to dry!. Another problem is that curves and bends and spiral ridges cause turbulence in the air flow, which also reduces the airflow’s velocity. But it is not the fault of the flexible duct. As part of our commitment to service excellence, we do our best to share relevant information with our customers. When leakage is virtually eliminated, the cost of filtering, heating, cooling, and distributing conditioned air is kept to a minimum. Snap a plastic cap onto the duct end, then slip the preformed insulation over the duct. Flex Duct Kit Product Sheet. Return air drops can cost over $300. The installation of hard ducts is. Cut through the drywall to expose the old duct work and remove the old flex duct (Image 1). I replaced several cracked plastic gates. The duct work is light, yet surprisingly durable. It should be supported with straps that are a minimum 1. Flex ductwork is typically made of a wire coil covered by a thin, flexible plastic wall and wrapped in insulation and foil backing. You mentioned that you were considering re-insulating your current metal duct work. The passage of noise from one space to another through vents provided for air passage. At Budget Heating and Air Conditioning Inc. 50 per linear foot. (2) states: "The requirements of this Sub-section apply to individual dwelling. These ducts for air conditioning applications are double-ply insulated flexible hoses that are made of aluminum foil and PET film layers. Then using the foil tape tape every duct seam to prevent any air leakage out and into the ducts. 3 Flexible air ducts. Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting Oversized core to connect quickly and easily to standard sheet metal fitting Galvanized core wire for greater corrosion resistance vs. Address: 20 E Ochoa St, 2 - blocks south of Broadway & 1/2 - block east of Stone. It is flexible and lightweight for easy installation, and passes the necessary fire tests to achieve two-hour fire resistance requirements. Dual-Tech® is a pre-insulated duct system that combines the advantages of Kool-Duct® and Techna-Duc® into a double layer air distribution system. Ductair is a leading manufacturer of quality air-conditioning duct and fittings. In SMACNA’s duct system design manual, the association says that round ductwork’s cost is about 67 percent of the cost of square or rectangular ductwork. To support flex duct properly, use straps that are at least 1. On the one hand, there are the massive ducts that complement processing equipment. Flexmaster U. The duct work is light, yet surprisingly durable. If flex duct is used, it should be stretched as much as possible during the installation to reduce the amount spiral ridges for air to run into. The State of Fiber, Spiral, and Flexible Ducts in HVAC All three types of ductwork have clear, defined roles within the HVAC ductwork landscape MANY OPTIONS: There is great optimism throughout the industry for the future of fabric ductwork due to its ability to retain paint, health benefits, and lightweight structure. Specializing in Mastercool coolers and air conditioning parts and supplies. Weight-based labor formulas generally allow 50% more pounds per man-hour for installing round and flat oval spiral duct versus rectangular. Selecting the appropriate fiberglass duct insulation for your application is critical to ensuring that systems achieve optimal performance, meet code, and. If the flex ducts only have dust or debris, they should be able to be easily cleaned by a qualified professional with the right tools. Flexible ducting with built-in 3 insulation typically costs $1. FLEXIBLE DUCT CONNECTOR PRODUCT CATALOG PAGE 3 METAL-FAB® SPECIFICATIONS Metal-Fab is constructed of material which meets the requirements of heavy commercial systems. 38 mm) total thickness. My numbers in the table are based on an average between ACCA's and a couple other brand-specific ductulators I found. To install preformed duct insulation, start by disconnecting an elbow to expose the end of the duct. This duct does an excellent job of absorbing sound from the blower. These products can be custom built for your project or can be purchased through a stocking distributor in your area for common diameters and lengths. Duct board replacement costs for 60 linear feet for a home located in zip code 33624 using R6, 8-inch diameter flexible polyester material ranges from $7. Duct sealing vs duct replacement. I am not hating on metal pipe, but flex duct is more practical in many applications. Seal each flex duct connection with. Larger ducts require a larger initial investment, but result in lower fan energy costs over the life of the system. 0 Flexible duct is available in 25' lengths with raw ends. And on the whole is a reasonably survivable exterior shell. It was the standard when I first got into HVAC but now flex is the standard and it is easier to run. The ductwork included both flex ducts and metal ducts, attic and floor ducts, and ducts inside and outside of conditioned space. With manufacturing and distribution facilities dotting the planet, Ductmate is one of the largest HVAC system components manufacturers in the world, and the largest in the United States. Comment: Need duct work installed in remodeled downtown office. Flexible Ductwork Flexible ducts are typically tube-shaped, made of a wire coil covered with a bendable, durable plastic, and surrounded by insulation. Here in the Cayman Islands, you generally have two options: sheet metal ducts or fibreglass duct board. A dryer transition duct is the flexible material that can be used to transition between the dryer and the duct. Menards® offers a wide range of ductwork pipe and fittings to help your ductwork systems run efficiently. I would estimate an average reduction of between 25-30%. I thought that air flowed better through metal, and that the flex duct tended to reduce the velocity. flexible duct, according to a press release. The Duct Size Calculator is a quick reference tool for approximating duct size and equivalent sizes of sheet-metal duct and flexible duct. In addition to the cost advantage, bus duct was installed in a smaller cross sectional area. Navy uses duct tape to repair radomes. Flexible duct needs to be larger than pipes to allow the same amount of airflow. I thought that air flowed better through metal, and that the flex duct tended to reduce the velocity. You might not think that this is an issue that people in Santa Clarita have to deal with, but most people with condensation on their air ducts don’t even know about it. No sheet metal should be exposed. These ducts for air conditioning applications are double-ply insulated flexible hoses that are made of aluminum foil and PET film layers. The interior of the duct should be smooth surfaced with the joints running in the direction of the airflow. More than likely. Sheet metal air ducts are the most durable and least likely to grow mold. Rules for dryer transition ducts. I have seen many leaky metal ducts in crawl-spaces as well. If you can replace all flex duct do so, but accepting 1 or 2 feet of flex at the end of a pipe run is acceptable. If not from sheet metal, spiral ducts can be fiberglass board or a flexible plastic and wire composite. The air handlers were all located in conditioned space. Get the expensive stuff not the low cost or it will fall off in a few short months. Thank you to the AQC team for your guidance and training, it was very helpful. , we are proud to be the leader in HVAC supplies, parts and equipment. Identify the different types of fiberglass duct systems. There is duct mastic that may work better for some areas, smears around like bondo. All fittings are fabricated with stiffening beads on duct sizes 19” wide and larger which have more than 10 square feet of unbraced panel. The truth about conduit and duct. Insulated duct wrap costs $40 per 60' roll. Can I Use PVC for My Dryer Vent? This entry was posted on March 13, 2014 by admin. Seal all registers and grills tightly to the ducts. Flange Connectors, Retrofitting Rooftop HVAC Equipment, and more. Address: 20 E Ochoa St, 2 - blocks south of Broadway & 1/2 - block east of Stone. If you have metal duct and and there is a lot of leaks, just measure the diameter and buy the flexible duct, it takes a long time(for me anyway) to recover them the old fashioned way. The duct work is light, yet surprisingly durable. Most flexible duct products are appropriately over-sized in diameter to fit over standard sheet metal fittings. 1 yes it would for pressure-sensitive tape or "181B-M" for mastic. Let's look at some of the different types of ducts needed for air conditioning. Rectangular duct for instance, can be easily fabricated by most sheet metal works shops with a pair of snips and a hand brake. As an industry-leader, our family of companies include Lockformer, Engel Industries, ISM by Lockformer, Iowa Precision and many more, bringing decades of experience addressing every aspect of the HVAC industry. We offer a wide variety of Ductwork and Fittings including Ceiling Boxes, 45 and 90 degree Elbows, Floor Boxes, KD Pipe, Pant Wyes, Tee Wyes, Square to Round Transitions and much more. The installer is what makes this a good or bad product. The hope is that the flex connector will remove some transmitted noise. Prodex Total Duct Insulation = Insulation + Radiant Barrier + Vapor Barrier All in One Product. The "SS-Flex 800" is a single-ply helically corrugated stainless steel hose with a four-ply finished seam that is folded flat and crimped, allowing for excellent tightness and strength. Whenever possible, avoid designing a bend or elbow within two feet of the fan to minimize static pressure and fan noise. Flexible aluminum duct vs metal duct I have been installing HVAC in my 60 years old building. The number after EF-matches the duct diameter. Spunstrand produces fiberglass Duct for commercial, residential, industrial and government clients throughout the world. Flexible ducts are made out of corrugated plastic, often wrapped in insulation. Telecommunication Cable Ducts The Telecommunication ducts are HDPE duct pipes pre-lubricated with silicone core suitable for telecommunication and fiber optic cables. This item Quietflex 8" R8. Insulated Flexible Air Duct Jacket HVAC Ventilation Flex Ducting R8 14 in 25 ft. 5 inches WG negative for low pressure ducts. Larger ducts require a larger initial investment, but result in lower fan energy costs over the life of the system. Self-supporting and conformable, the flexible lightweight backing keeps insulation tight against the duct wall. Six Good Reasons. It also has the ability to be shipped collapsed to reduce storage and freight costs. Flex Duct Sizing Chart Lovely Duct Size Vs Airflow – Part 1 regarding Flex Duct Sizing Chart24391 Hvac Ductwork Furnace Maintenance Heating Systems Revit Refrigeration And Air Conditioning Heating And Air Conditioning Electrical Wiring Electrical Installation Hvac Design. The calculator uses information from ASHRAE Research Project 1333, HVAC Duct Efficiency Measures, and was developed with funding support from ASHRAE and ADI. Choosing the Proper Insulated Flexible Duct with Metalized Jacket This entry was posted on August 12, 2014 by admin. Before I dig into the rules, I need to define the difference between a dryer duct and a dryer transition duct. Is more durable, taking accidental abuse in stride, compared to flexible duct. The seam on our galvanized sheet metal duct is formed on a snap-lock machine which allows ease of assembly on your job site. Flexible vs Solid Smooth bore Tags: HVAC I am in the process of building a new home and have heard some disturbing remarks on the inefficency of the now so popular, easy to install. The 2006 Touchstone Energy® Home Program standards for the state of Indiana page 18, Mechanical Systems states; 3. Metal flex duct performs better than plastic flex duct. Unlike PSP ® coated metal duct, fiberglass and other combustible duct materials require the use of internal sprinklers for fire suppression. 125456358 Duct Design ISHRAE - Free download as Powerpoint Presentation (. Helpful Hint: Applying duct tape on the bucking bars. LinaTex® textile fiber duct liner is a flexible duct liner specifically designed for lining sheet metal ducts in HVAC systems. Mestek Machinery has a long history of providing reliable and long-lasting duct work machinery and sheet metal bending equipment. Acoustical laboratory tests show that in similar sizes and shapes our double-wall duct and fittings can reduce radiated noise by 25 dB or. Applications include: pipeline noise in chemical, petrochemical and waste-water treatment plants, HVAC duct work, and other industrial processes. non-galvanized wire. " We all know flex has more resistance than metal and young viewers may want to say "DUH", but there are contractors who don't know there's a difference; sad but true. The main difference between sheet metal and flex duct is that size for size, metal ducts deliver more air and are less susceptible to kinks and crushing. A: Most of what's being installed in new houses now is flexible ducts because they cost so much less than rigid, sheet-metal ductwork. That’s fine: most of the debris in your ducts gathers toward the registers, anyway, and you can reach those spots on your own. Aside from helping ensure the comfort of those residing in these spaces; HVAC can also help in diluting airborne contaminants by providing fresh outdoor air. catalog including Spiral Pipe,Snap-Lock Pipe,Round End Caps,Pipe Couplings - Male/Male,Ductwork Take-Off Fittings,Concentric Reducers,Ductwork Elbows,90 Degree, Stick-o. The ductwork included both flex ducts and metal ducts, attic and floor ducts, and ducts inside and outside of conditioned space. Flexible duct can also be airjet cleaned, though a camera run should be made afterward to identify any rips or joint separations from the cleaning, and fix them. The connection of the sheet metal pipe is crimped for easy fitting of consecutive duct joints or to sheet metal fittings and Flexible duct. It collects dust and is almost impossible to clean. Noise (unwanted sound) from a duct system is a common problem. The good news is that most things that go wrong can be avoided by following the "best practices" in a guide recently published by the Manufactured Housing Research Alliance. standard air. It’s easy to install by trenching, jetting, pulling, and HDD (horizontal directional drilling) methods, as well as being used as innerduct. These ducts for air conditioning applications are double-ply insulated flexible hoses that are made of aluminum foil and PET film layers. Duct fans can cost $30 or more. Mestek Machinery has a long history of providing reliable and long-lasting duct work machinery and sheet metal bending equipment. Long, poorly supported runs of flex duct sag, stress and separate. Non-Welded Grease Duct Systems Installation, Operation, and Maintenance Manual FOR YOUR SAFETY TWO MAJOR CAUSES OF GREASE DUCT RELATED FIRES: (1) FAILURE TO MAINTAIN REQUIRED CLEARANCE (AIR SPACE) TO COMBUSTIBLE MATERIALS AND (2) FAILURE TO CLEAN GREASE-LADEN DUCTS. The poorly installed flexible duct is replaced with sheet metal duct from the air handler supply plenum to the distribution trunk ducts for more efficient home heating and cooling. in accordance with UL 181, The Standard for Safety for Factory-Made Air Ducts and Air Connectors. Standard PVC cement and primer can be used for installation. round duct and fittings; spiral pipe. Unfortunately, poorly designed or installed duct systems are one of the more common problems in the industry. THE DUCT SYSTEM, used in air heating and air cooling your home, is a collection of tubes that distributes the heated or cooled air to the various rooms. The frequency of this popping noise is directly related to the actual shape the duct work in the structure. flexible duct wrap • Value engineer. 81 per linear foot. Replacing duct work can be very expensive and still you could end up with mold in your air ducts. Rigid metal duct is the only suitable duct material for concealed duct installations; that is, the portion of the duct run inside walls, floors, or other areas where the duct is not fully visible. Please contact our sales team if you cannot find what you are searching for. The insulation also helps control condensation by providing an airtight thermal break around the HVAC ducting. Duct Insulation - Solving Condensation, Heat and Cold Problems Insulation on Ducts must Protect from Condensation, Radiant Heat and Cold. For best airflow, it is recommended to keep the duct tight, as short as possible, avoid sharp turns and keep duct as round in shape (do not squash it). 200 MPH TAPE: Pit crews across the nation’s auto-racing circuit know that duct tape holds even when you’re going over 200 M. Spiral ducts are being used more frequently and can be any length, but the most common cut is 20 feet in order to fit in a standard truck. Ductwork supplier: galvanized, stainless steel, aluminium spiral duct and associated fittings. Do not use data for round sheet metal duct. SmartZone 6-Inch Air Duct Damper. Where most other types of ducting are formed from sheet metal, spiral duct pipe is formed from a coil of metal into a rigid steel tube with a 4-ply spiral lock seam. flexible duct. 1”wc or less (or a metal ductulator at * 0. Five of my 8 vents in the house go directly into a 90 degree bend, two of which are greatly pinched. We also carry a wide selection of Metal Flex Duct, Silver Flex Duct, Silentflex as well as many others. Of course all this ignores duct cleaning which can completely destroy a flex duct. Round ducts take up more height than do rectangular or square ducts. They all seemed to custom make the ductwork, so get a few quotes. , in Houston, Texas. Metal flex duct performs better than plastic flex duct. Biyang HVAC Duct Fittings, also named Ductwork Fittings, are the important parts among ductwork parts for connection or transitions, protection and decoration purposes. Why sheet metal ducting is so much better than using flex duct for a heating and air conditioning system. Class 1 rating and local codes while featuring long term flexibility and strength. 2 as a grounded metal enclosure containing factory mounted, bare or insulated conductors, which are usually copper or aluminum bars, rods, or tubes. You might not think that this is an issue that people in Santa Clarita have to deal with, but most people with condensation on their air ducts don’t even know about it. actually works; use rigid or flexible metal ducts and keep runs as short as possible. More than likely. At a 3-1 ratio, rectangular duct cost about twice as much as round. Allison Bailes of Decatur, Georgia, is a speaker, writer, energy consultant, RESNET-certified trainer, and the author of the Energy Vanguard Blog. The pressure inside the ducts increases and the metal duct expands. ppt), PDF File (. For building managers in almost every setting, the benefit starts with occupant comfort. Save 10% on your entire service when you schedule a dryer vent cleaning with an air duct cleaning. Duct tape is not approved for use on ducts and, despite the fact that it works great for a variety of heavy-duty projects, doesn't stand up to the conditions of an HVAC system. Seal each flex duct connection with. CB M3 Pce Wt. Pros of Flexbile Ductwork. 0 Flexible ducting, also known as ‘flex’, is used to transport heated or cooled air from the unit into your home and vice versa through the grilles or diffusers. How to Install Round Sheet Metal Duct Introduction, flex duct problems, sheet metal duct design and material cost. non-galvanized wire. What Are The Benefits Of Availing Online Cake Delivery Service In Kota?. Two Types of Duct Work Used: Sheet metal and Sonotube. In stock and ready to ship. Then using the foil tape tape every duct seam to prevent any air leakage out and into the ducts. the benefit to flex duct is it is quick to install and can go in a lot of areas not feasible in metal. Acoustical laboratory tests show that in similar sizes and shapes our double-wall duct and fittings can reduce radiated noise by 25 dB or. When these joints are sealed tightly, there is virtually no leakage of air. To estimate costs for your project: 1. To install preformed duct insulation, start by disconnecting an elbow to expose the end of the duct. Actual costs will depend on job size, conditions, size options. Available in aluminum and galvanized steel, rigid metal duct is very smooth on its interior, so air flows through with little friction, and it. Air dispersion systems continuously convey discharge air within the space being conditioned, thus providing consistent and uniform air dispersion in the occupied space and resulting in less energy usage. HVAC Duct Fittings, Sheet Metal Duct Fittings Supplier. The duct system can have an important effect on health of. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased. Duct board vs Metal Plenums - Supply Is on perferable over the other. eastern tight round spiral duct and fittings construction standards Gauge selection for galvanized steel (ASTM A653) or paint grip. While other materials such as sheet metal and duct board are still used, the cost advantages of flex duct make it a popular choice for many builders. Of course, ventilation may not be adequate if moisture is getting into the house because of improper foundation. Mestek Machinery has a long history of providing reliable and long-lasting duct work machinery and sheet metal bending equipment. 50 per linear foot of supply and return ductwork in your home. They are derived by combining the strength and flexibility of PE material with a sutiable lubricating layer on the inner surface of the ducts. Ramsey Road, Ste 105 - Coeur d'Alene, ID 83815 - p. GAF offers a variety of fabricated metal ductwork options including in-wall duct systems, insulated flexible ductwork, manufactured housing systems, plenums & air returns, register boxes, roof top venting, starting collars & take-iffs, transitions & connectors, trunk & branch lines, and vents. Aluminum Ducting - Flexible Metal non-combustible flexible duct is ideally suited for a wide range of HVAC applications Sort by: Select One Part Number Product Name High Price Low Price. The State of Fiber, Spiral, and Flexible Ducts in HVAC All three types of ductwork have clear, defined roles within the HVAC ductwork landscape MANY OPTIONS: There is great optimism throughout the industry for the future of fabric ductwork due to its ability to retain paint, health benefits, and lightweight structure. Metal Ductwork FabriDuct™ air dispersion systems are the easiest, most effective, and most cost efficient way to supply large quantities of low-velocity or non-directional airflow. It is also used in mechanical rooms, and gymnasiums where exposed duct requires jacketed protection. I don't know why, but, I have taken metal pipe apart to find a lot of crud which I don't think would live in flex duct. To support flex duct properly, use straps that are at least 1. Average costs and comments from CostHelper's team of professional journalists and community of users. Flexible ducts are used in military and defense field applications including deployable command, control and communication centers, hospitals, decontamination facilities, forward operating bases, maintenance facilities and tactical shelters. New construction has made duct board and flex duct the product of choice. 208-930-1310. DryerFlex outperforms other exhaust hose because of its unique design: all metal construction using five layers of 25 micron aluminum ribbon wound over galvanized, zinc coated wire. Shop For Duct Board At The Nation's Top HVAC Distributor - GEMAIRE in the Ducting & Sheet Metal category. EPA recommends proper insulation of ducts as a means of improving system efficiency and lowering energy bills. • Fibrous glass duct liner thermal performance, in combination with sealed sheet metal duct surfaces acting as an air and vapor retarder, helps to prevent the formation of water vapor condensation inside the duct as well as on its outside surface. Learn About Texas Duct Systems, L. Today, only two types of flexible metal vents meet the strict building code requirements and are UL2158A Listed materials that have zero flame spread and zero smoke developed as tested per Surface Burning test of UL2158A. Atlantic Duct Cleaning offers residential and commercial indoor air quality services for air ducts, dryer vents, and kitchen exhaust systems. These ducts work to provide boilers with air so they can fire and also remove gases and particulates from boilers and process systems. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased. Unlike PSP ® coated metal duct, fiberglass and other combustible duct materials require the use of internal sprinklers for fire suppression. Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting Oversized core to connect quickly and easily to standard sheet metal fitting Galvanized core wire for greater corrosion resistance vs. CAUTION: When backfilling or grading, care should be taken not to dump or push heavy loads directly on the duct, nor should heavy equipment be allowed to run over the duct. Then, there are the required accessories, which can add up too. Rigid ducting systems, often called hard pipe, are prone to their own brand of installer pitfalls, particularly extra duct length:• If cutting-off is awkward, or just too time-consuming, unnecessary dead-end extents are sometimes capped off and left. A wide variety of canvas duct options are available to you, such as ventilation, hvac systems, and air conditioning. convenio del metal 2009 bury council jobs fox song daisy of love fatal accident picturesI have seen people wrap EMT with duct tape at the fittings. The State of Fiber, Spiral, and Flexible Ducts in HVAC All three types of ductwork have clear, defined roles within the HVAC ductwork landscape MANY OPTIONS: There is great optimism throughout the industry for the future of fabric ductwork due to its ability to retain paint, health benefits, and lightweight structure. The good news is that most things that go wrong can be avoided by following the "best practices" in a guide recently published by the Manufactured Housing Research Alliance. Equipment is only permitted within the duct specifically fabricated to transport environmental air if necessary for the direct action upon, or sensing of, the contained air. Ducts and fittings. Let's look at some of the different types of ducts needed for air conditioning. You've heard about indoor air quality (IAQ). com offers 465 canvas duct products. Get US Duct's Product Pricing Guide* *Now searchable for your convenience! The US Duct Product Pricing Guide is the COMPLETE & resource to find all your ducting needs. What I'm trying to describe is similar to those seen on domestic forced air furnaces, just above the furnace where the metal duct attaches. The equipment employed depends not only on the type of debris and contaminants, but also on what material the air ducts are made of. Spunstrand Inc. This is recommended in a fair amount of places throughout the home such as attics, basements and crawlspaces. Another key ingredient for sealing up ductwork components includes the use of our DS-321 Indoor/Outdoor duct-sealant that works on all types of ducting including metal, glass-fiber duct board, as well as duct fabric and flexible tubing runouts. FabriDuct™ acts as its own diffuser through the placement of strategically designed air slots. desired temperature, and to prevent condensation on duct surfaces. In addition, because they are non-porous they are least likely to grow mold or mildew. As shown in Figure 1, insulation R-values should be selected based on climate and duct location. per ft (42 mm per m). One of the most common problems is undersized ductwork, which causes the ducts on the supply side to expand as they pressurize. Do not use data for round sheet metal duct. Insulate ducts in unconditioned areas (like attics, crawlspaces, and garages) with duct insulation that carries an R-value of 6 or higher. Fortunately, cleaning your air ducts isn’t that difficult to do if you use the right tools and make a point of following directions. Flex duct is not porous on the inside. •Install horizontal flex duct hangers at least every 4 feet (1. As the world’s most recognized brand in flexible closed-cell foam insulation, AP ArmaFlex and AP ArmaFlex FS add long-term value and long-lasting performance to HVAC projects. The calculator uses information from ASHRAE Research Project 1333, HVAC Duct Efficiency Measures, and was developed with funding support from ASHRAE and ADI. A good rule of thumb is to provide a duct support no less than every 4 feet, and more frequently when using large-diameter flexible duct [4C], even when ducts are partially supported by framing members [4D]. flexible duct diameter (mm) 44 l/s Ø 150 92 l/s Ø 200 170 l/s Ø 250 275 l/s Ø 300 385 l/s Ø 350 503 l/s Ø 400 636 l/s Ø 450 785 l/s Ø 500 950 l/s Ø 550 revision 14/04/03 b-ds 1 flex sizing flexible ductwork flexible duct sizing guide. So, if you are doing ducting installation with R8 ducting, be prepared to pay more for it. 5 inches wide. The last connection to save you from making hard connections. Fittings are manufactured on our state of the art fabrication equipment. The Duct Size Calculator is a quick reference tool for approximating duct sizes and equivalent sizes of sheet metal duct vs. There are multiple ways in which Unico promotes efficiency. flexible duct, according to a press release. Today, only two types of flexible metal vents meet the strict building code requirements and are UL2158A Listed materials that have zero flame spread and zero smoke developed as tested per Surface Burning test of UL2158A. Aluminum foil wrap insulation, Fire wrap insulation. Larger ducts require a larger initial investment, but result in lower fan energy costs over the life of the system. Corporate Headquarters. Spiral Type Ducting. In comparison to metal duct, flex duct is easier and faster to install. for full details. Although typical costs for remediation run $350 and up,. High R- Values with thin insulation - low thermal conductivity with thicknesses of 7/8" and 1 3/16" For more information on Kingspan KoolDuct or if you would like a custom quote for your next project, please contact Bob Brandt or Brian Fischer at (855) KOOLDUC. Standard PVC cement and primer can be used for installation. I don't know why, but, I have taken metal pipe apart to find a lot of crud which I don't think would live in flex duct. Insulated metal will usually cost more to install these days. Fortunately, cleaning your air ducts isn’t that difficult to do if you use the right tools and make a point of following directions. This is especially important with flexible ducts, where large sags or kinks in ducts can impede air flow. Metal Ductwork FabriDuct™ air dispersion systems are the easiest, most effective, and most cost efficient way to supply large quantities of low-velocity or non-directional airflow. Cost Savings/Minimal Labor Hours: The cost of a DuctSox System is 20 to 80% less than metal. Two Types of Duct Work Used: Sheet metal and Sonotube. Each box of metal duct contains five 5-ft. Is more easily cleaned than the corrugated flexible duct. No tapes, no screws, no clamps. That said it is vulnerable to punctures, animals and other hazards. In some instances , due to the combustibility of many resins used in making FRP duct, certain building codes and insurance companies may prohibit the use of such materials altogether. There are also flexible vinyl and flexible aluminum pipes that have a UL listing of UL 181 “Closure Systems for Use with Flexible Air Ducts and Air Connectors”. Standard PVC cement and primer can be used for installation. The Environmental Protection Agency says that duct cleaning services typically " but not always" range in cost from $450 to $1000 per heating and cooling system, depending on the services offered, the size of the system to be cleaned, system accessibility, climactic region, and level of contamination and type of duct material. When its comes to your home and the products you use in it, you should always do research to make sure you are aware of safety precautions, especially when dealing with electrical appliances that produce any sort of heat like a clothing dryer. The metal pipe is pop-riveted together and sealed with metal (not cloth) duct tape. Sheet metal duct walls have higher sound-transmission loss than lightweight duct materials such as fiberglass duct board and flexible duct. You also will need foil backed tape, Not duct tape. Two-layer grease duct applications: 3M™ Fire Barrier Duct Wrap 615+ meets the criteria of ASTM E 2336 Standard Test Methods for Fire Resistive Grease Duct Enclosure Systems. The "HVAC Insulated-Flex" hose is a superb choice for HVAC air duct use. The duct system can have an important effect on health of. The Duct Size Calculator is a quick reference tool for approximating duct sizes and equivalent sizes of sheet metal duct vs. The best way to connect dryer duct sections is to use metal tape.