What size supply duct for 3 ton unit

A common rule of thumb is to aim for approximately 400-450 CFM (cubic feet per minute) of airflow per ton of HVAC capacity. For example, a 2-ton system might require a return duct with a size of around 16 inches in diameter. However, specific sizing considerations may vary based on factors like duct material and design.

Air handler closet dimensions: Minimum of 30"W x 49.5"H x 32"D for small units and 39"W x 60.5"H x 36"D. Furnace closet dimensions: Minimum 26"W x 40"H x 42"D for small furnaces and 37"W x 46"H x 41"D for large furnaces. Of course, those are minimum dimensions, and the closet can be much larger. But these AC, furnace or ...2 ton does not give you 1000cfm. 2 ton gives you 800 cfm. Also, you need to tell us if you're measuring your return duct by inside measurements or outside measurements. Yes, I understand that 2 ton gives me 800 cfm. The picture just shows that my 12x16 gives me 1000cfm (sufficient for my units' return, maybe).But I think it will be 8" x 28" and of coarse that is if it is to be one long run, as described in the supply. if two return ducts then they will be smaller. You will need about 8 returns for 1600 cfm/4 ton cooling. Approx. 200 cfm per return grill (single grill). Ask Your Own HVAC Question. A rectangular 6×6-inch duct has an airflow of 110 CFM. Bigger 6×12-inch ducts can handle 270 CFM airflow. The bigger the crosssection of ducts, the bigger CFM; that’s pretty obvious. The smallest 6×4 ducts can handle 60 CFM airflow. The biggest 42×12 ducts with 504 sq inch crosssection can handle 3000+ CFM airflow. How to size your HVAC ductwork? Understanding measurement units for ducts. Using Modernize's HVAC and ductwork installation calculator. Updated: Feb 16, …I am about to fix a duct job that was all screwed up by a contractor, and I have a few questions about sizing the duct coming out of the supply plenum. My 3 ton air handler is located in a garage, single story home, and is at the beginning of the supply duct run. My understanding is that a 3 ton system will flow at least 1200 cfm.

He believes the unit is running on 3 tons supply air & 3 tons return air. ... The condition you have described is all based upon static pressure. 18" is a very common size duct used on 5 ton systems, especially by tract builders.As mentioned above, filters, coils ,supply ductwork can all have an effect.Most contractors undersize ductwork and do ...The Trane dealer is recommending the x15i 15 seer 2 ton. The Bryane dealer is saying I need a 2.5 ton (215b 2.5 ton) Now I questioned both about the ton sizing and got two seperate answers. Trane guy told me the duct work was too small for a bigger unit and at 1700 sq ft of my home the 2 ton should work just fine. TheDuct Cfg: Vertical Supply / Vertical Return Medium Heat Standard One Stage Cooling Models Dimensions (ft. in.) & Weight (lb.) *** ... Return Air Filter Size: 16 x 25 x 2 Unit Configuration Direct Drive - EcoBlue - High Static Al/Cu - Al/Cu ... Unit Feature Sheet for 5 Ton RTU 208-3 Project: ~Untitled1 09/19/2020 Prepared By: 12:13PMThanks, Todd for the answer on the duct size. Grills are 14 by 14 and 12 by 14. I am pretty sure they are too small. But if the ducts are right sized, I can just have the grills replaced. Hopefully they can be made larger. (2 cfm per sq. in.) 364 x 2= 728 cfm. Less than 2 ton of airflow. Reply.All tests were run utilizing a 40-ton rooftop fan assembly at 20,000 cfm of airflow at 2" T.S.P. The 40-ton fan assembly consisted of two parallel, forward-curved, 20" diameter fan wheels. The different combinations and the resulting sound reduction in the critical first three octave bands are shown in Figure 9, p. 19.Jun 7, 2023 · Undersized return air ducts result in the ducts and grills being more noisy than usual and the air conditioner components becoming stressed, thus reducing the lifetime of the unit. Use our handy return air duct size calculator or charts below to help you determine the correct return air vent size for your home. The length, width, and number of the various duct branches and components that are fed from the main trunk can all affect this metric. Cubic Feet per Minute: For a simple calculation, multiply the size of the HVAC unit (expressed in tons) by 400. Next, divide that number by your home's square footage. Although this is the basic formula ...Room Size. However, most HVAC contractors use a rule of thumb to determine the number of air vents needed. For example, for a standard residential HVAC unit, you'll generally need one supply vent and one return vent for every 100 to 150 square feet of living space. This means that a 10-foot by 12-foot bedroom (120 square feet) would need one ...

A 3-ton heat pump has approximately 1200 CFM of air flow. How big should my AC return be? Generally, if you are using a Duct Sizing Chart or calculator (such as the Trane Ductulator), size the re- turn ducts for 0.05 inches/100 ft (0.40 Pa/m) based on the expected airflow through that return air duct. The total sum of air from all the returns ...That being said, sheet metal ductwork and fiberglass duct boards tend to be more expensive, with galvanized steel ducts ranging from $11.94 to $34.72 per linear foot and fiberglass ranging from $7.21 to $30.49 per linear foot uninsulated and $7.09 to $36.25 per linear foot insulated. However, if installing flexible HVAC ductwork, flexible ...If he's adding to what you already have, it could be smaller. Your filter now is 16 x 25 = 400 sq in. So if he's adding on, you would need at least 200 sq in more. 10 x 20 ( 200 sq in), 14 x 14 (196 sq in), 15 x 15 (225 sq in), etc , …Supply trunk (one continuous trunk) with: 8"x8" x 14' section with 3 - 6" supply branch runs. 8"x16" x 25' section with 6 - 6" supply branch runs. 8"x8" x 8' section with 3 - 6" supply branch runs. So I have 12-6" supplies to my rooms. All duct is hard ducted and insulated to R-5.

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A good HVAC duct sizing rule of thumb is to measure rooms in your home, the necessary airflow rates, and friction loss rate. Using these numbers you can calculate the appropriate HVAC duct size. For example, a one-to AC system typically uses 10-inch ducts, while a 4-ton AC system requires 18-inch ducts. There are several variables to consider ...2 Jul 2021 ... ... Duct Crimper: https://amzn.to/2TxE1pT Klein ... 3:11 Jumper Ducts & Transfer Grilles 4:48 Central Return Air Option 6:00 Supply ... ton 11:30 ...Take this number and multiply by 1,000. Then divide the answer by 12,000. The answer you get is the tonnage or size of your system. Let's say there's a 24 in the model number. Then the tonnage is (24,000/12,000) or 2 tons. If you're putting in a central air conditioning unit you'll be incurring quite an extensive cost.1. Produce sketch of duct design showing approximate location of all outlets, the air handler, the return openings, and a layout of the supply plenum and return duct. 2. Locate and cut the openings for the outlets and the return air openings. 3. Install the branch ducts. 4. Install the outlets and mount to floor or ceiling. 5.Use the attached adapter to change the pipe size from Ø1/2 in (Ø12.7 mm) to Ø5/8 in (Ø15.88 mm)

The supply plenum gets filled with cooled or heated air by the HVAC system, which is then ultimately sent through the ductwork. When the cooled or heated air enters a room, the already-present air in the space gets pushed into another series of ducts. These ducts then transport the returned air to the return plenum.Step 1: CFM - System Size & Blower Size. Sizing an HVAC System. Step 2: Maximum Friction Rate. Friction Rate and Ductwork Length. What is TEL? Step 3: Maximum Velocity. Summary of Ductwork Sizing Factors. Our Recommendation. The Pick HVAC Ductwork Calculator.To calculate air conditioner size, multiply the length of the room by the width of the room to get the square footage of the room. Then, multiply the square footage by 25-50 btu/hr.sqft according to the application to obtain the cooling capacity needed.The 30"x 20" return grill is standard for a 5 ton system and probably 90%+ of 5 ton units in the valley have 30"x 20" return grills with no problems. The unit supplied and installed is an AHRI (#6612730) tested and certified match that is rated 14.0 SEER/11.5 EER/8.0 HSPF @ 1,750 CFM. (see attached) According to the static pressure read by this ...I just had a new 4 ton heat pump with vs air handler installed. I have 3 return ducts, 1 - 24"x24", 1 - 14"x20", 1 - 16"x16" . they all get funneled to the return box that the unit sits on. Inside that box which is beside the air handler there is only one opening that lets the air flow under the air handler it is 18" wide x 9" tall opening.I am having central air installed in my 70 year old MA Cape home. 1900 Sq Ft. One contractor say to go with a 3.5 ton. One says 2.5 because of my small duct size. The ductwork measures 8 by 14 at the furnace but 6 by 10 inches at the wall vents.So, I am looking at getting a new 5 ton unit for my house. I had a guy come out and give me an estimate and he said my current return is way to small for a 5 ton unit. I currently just have one return that comes in to my garage and it is 12 x 18. He said that 5 tons need to breathe alot and that he wants to get it as close to 20 x 20 as possible.The retailer also bought e-commerce delivery startup AirTerra in May in an effort to take control of its own supply chains. American Eagle, the mid-sized apparel company best known...AC units are sized in tons. One ton of cooling capacity equals 12,000 British Thermal Units (BTU). One ton of air conditioning cools 450 to 600 square feet on average, depending on the home's layout, insulation, and local climate. AC unit cost by tons. Replacing a 3 to 5-ton AC unit costs $3,000 to $8,000 for a 1,500 to 2,500 square foot home.What size round duct is best for a 2.5 ton unit on a mobile home that's 13 x 60. Contractor's Assistant: Did you double-check the thermostat? And what about the unit's filters? I need to replace my duct system, what size round duct is best for a 2.5 ton unit? on a mobile home that's 13 x 60y duct systemTrunk line size. The Sizing Guide towards the bottom of our page will help you determine the right size for your home. For Duct Sizing please check our website as well. If you are still unsure, please give us a call and one of our experts will assist you in finding the appropriate size.DUCT. a 7.5 ton unit will move around 3000 cfm depends on unit and return air. you will need somewhere around 3000 cfm of duct. now we will use flex and this is just a general idea. a 10" duct is rated for 410 cfm, a 9" duct 320 cfm, a 8" duct 230 cfm, 7" duct 165 cfm, a 6" duct 110 cfm and a 5" duct 65 cfm.

Original unit was 3 or 3.5 ton ho unsure. What I found. Very leaky duct system "in this case I think probably a good thing." 410ish CFM loss/gain supply and return. Returns not too bad. ESP 1.2IWC equal both supply and return. temp split 12* registers/return grill. Flex is R-4.2 located in attic. Plenums and ducts except for the added returns ...

Sep 16, 2019 · 2. The size of your air conditioning unit. 3. Airflow velocity. 4. Friction loss. 5. The static pressure of the HVAC unit. In order to calculate the duct size, proceed as follows – 1. Look on your furnace to see how many BTUs (British Thermal Unit) it produces. This information is usually given on the furnace plate. Divide that number by ... The following sizes are what are commonly required for line sets. The first number is for the outside diameter (OD) of the copper liquid line, and the second number is for the OD of the suction line. Note that this is not the inside diameter of the lines. 1/4" x 3/8". 1/4" x 1/2". 1/4" x 5/8". 3/8" x 5/8".1 Answer. Sorted by: 1. Yes, my “Ductulator” says a 12” diameter duct (with insulation on the exterior of the duct) is a little small, but barely adequate for a 2 ton unit. …3.5 Ton 14.5 Seer Bryant Package Heat Pump is available to buy in increments of 1 ... Model: 84136. $34.95. QTY: ADD TO CART Flexible Electric Supply Whip (3/4 in x 6 ft) Model: 84138. $46.95. QTY: ADD TO CART ... start collars are provided with each unit to provide easy connection to the structure duct work; Dependable Components - direct ...12" 12" 24" 0" Supply Air Return Air Figure 3. Minimum Unit Clearances Figure 4. Return and Supply Air Fittings Installing Return & Supply Air Fittings The supply and return fi ttings are included with 2. Overlap the collar ends keeping the small the unit and located in the supply duct. Page 7: Locating & Installing The Supply Dampers30 Oct 2023 ... Are you considering upgrading to a variable speed heat pump, but you're unsure if your existing duct system can handle it?Run a large size plenum under home from Pkg unit. Run new branches to existing registers using six round 26ga pipe or insulated flex. Just slow, not stupid. ... on the master bedroom side. Shorten the helper up. So that it taps into the supply duct between the first supply for the master, and the last supply for the dining room. When posting in ...Much like the recommendation to install dampers, I almost always emphasize adding a second return when replacing ductwork.During a major energy upgrade that we recently completed, we had two return ducts- a 14″ in the main house and a 12″ return duct in the master bedroom. That was for a 1.5 ton system and the static was 0.33 inches of water column (IWC).Jun 10, 2011 · 4-ton = 1,400 CFM. @ 300 Feet per Min for Filter Area. Minimum Filter Area should be 4.7 Square Feet ( 670 Square Inch) 20"x25" = 500 Square Inch or about 3.5 Square Feet. Need 170 (670 - 500) square inch (1.2 Sq. Feet) more of filter area. Designer Dan __ It's Not Rocket Science, But It is SCIENCE with Some Art.

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In most cases, if you are installing ducts in each room where there is a supply, you will want to go with the same size as your supply vents. If you are installing just one or two return vents, you will want to go with a 12-inch return for 2-ton units and lower. 14- inches for 3 and up. 16-inch should be suitable for 4 ton systems, whereas 5 ...Small Rooftop Units 3 to 15 Tons ... NUMBER USAGE MODEL SIZE TONNAGE SUPPLY AIR BRACKET SUPPLY AIR PICKUP TUBE RETURN AIR BRACKET RETURN AIR PICKUP TUBE CRSMKKIT003A00, CRSMKSEN003A00 48FC, 50FC, 50FCQ 04-07 3 to 6 48TC001809 (tube) ... ed to one or two compatible duct smoke sensors. The clearOur townhouse is in Phoenix and is 1400 sq. ft., with two adjoining walls. (The old unit is a 3 ton split system about a zillion years old.) The overall question is whether to go with a 3 or 3.5 ton, which is only about $70 difference in initial cost. Rectangular sheet metal duct = .07" on most metal duct calculators. 2900. 40x12. 100 31/2 x14 2200 38x10 220 31/2 x30 2350 40x10. Rectangular sheet metal duct = .07" on most metal duct calculators. 3050. 42x12. 1/8 to 1/4-in (3 to 6 mm) thick, between duct, unit, and floor. NOTE: Gasket kit number KFAHD0101SLP is also required for all downflow applications to maintain low air leak/low sweat ... Step 3 — Air Ducts Connect supply-air duct over the outside of 3/4-in (19 mm) flanges provided on supply-air opening. Secure duct to flange,Adicot, Inc.'s Duct Size Calculator is a versatile and powerful tool designed to assist professionals in the HVAC (Heating, Ventilation, and Air Conditioning) industry. Whether you work with metric or English units, this calculator can handle both, providing convenience and flexibility for users worldwide. Modeled after the renowned original ...Ductulator - Hand held rotating calculator used for sizing supply and return duct systems using the equal friction design method. Includes scales for friction loss per unit length, air volume, air velocity, round duct diameter, and rectangular duct diameters. One side uses English units, the other side uses Metric units. Includes a protective ...For the 3-ton, the CFM is 1200, given that 1 ton is equal to 400 CFMs. If this is the system you have, you should use a return and supply vent that matches the size of the AC in terms of the CFM it supports. If you use a small air filter than the system requires, you may also have a problem due to system cracks. ….

The Model KPO12-43 (nominal 12-ton or 135,000 BTU) is the most versatile unit in size and capacity in The KPO Series, KwiKool's Indoor/Outdoor Line of portables. ... 2-12" flanges for supply duct and 2-12" flange for return duct: Maximum Duct length: 75' each for supply and return. Condenser: Fan Type (Centrifugal) Belt Drive:A BTU is what's required to heat or cool one pound of water by 1 degree Fahrenheit. For example, your home's square footage total, including all floors and ceilings, is what determines what size what size HVAC unit you need. For every 500 BTUs required for your home, you will need approximately one ton of air conditioning or heating capacity (1 ...Original unit was 3 or 3.5 ton ho unsure. What I found. Very leaky duct system "in this case I think probably a good thing." 410ish CFM loss/gain supply and return. Returns not too bad. ESP 1.2IWC equal both supply and return. temp split 12* registers/return grill. Flex is R-4.2 located in attic. Plenums and ducts except for the added returns ...11 Dec 2019 ... An introduction to HVACR Duct Design, Static Pressures, Effective Length, Longest Run, and Total Effective Length. Table of Contents: 00:00 ...Rectangular sheet metal duct = .07" on most metal duct calculators. 2900. 40x12. 100 31/2 x14 2200 38x10 220 31/2 x30 2350 40x10. Rectangular sheet metal duct = .07" on most metal duct calculators. 3050. 42x12.Here are two examples: a right and a wrong way to design this ductwork. The first (right) way uses 6" diameter pipe run all the way to the planer from the cyclone. This design will work and be able to deliver the desired 800 CFM. The second (wrong) way uses all 4" pipe run from the cyclone to the planer. This design will not get the desired ...2 ton AC unit costs $1,700 - $2,200 3 ton AC unit costs $2,200 - $2,500 4 ton AC unit costs $2,500 - $2,900 5 ton AC unit costs $2,900 - $3,500 ( a 5 ton unit is extremely powerful and is not required for most homes) In general, you can roughly add $400-$700 for each additional ton, as the units go up in size. Residential Central AC ...Ventilation duct price list for supply air duct and exhaust air duct including spiral duct, flexible duct and rectangular duct. ... UNIT MATERIAL PHP / METER; 1: Rectangular Duct: W=150mm, H=100mm: 1 meter: GI: 615.98 : 2: ... Nylon tube or polyamide tube price list from size […] Pneumatic Silencer Price List. Pneumatic muffler or pneumatic ...Unless you select a square grille (such as a Cube Core with an Eggcrate design ), the size of the hole in the wall will not be the size of the grille you need. This is because a frame’s outer dimension adds roughly 2 inches to the overall size. For example, a 14x12 inch supply or return air grille with 16x14 inch dimensions will require a ... What size supply duct for 3 ton unit, Use a flex ductulator at a friction rate of *0.1"wc or less (or a metal ductulator at .05"wc or less) to size flex duct. Check the velocity of the air and increase duct size if the velocity is greater than 700 fpm. 600 fpm is recommended for low restriction and noise. 8" up to 170 cfm. 1.5 ton - 14" or two 10"., What size of return duct do I need for a 3Ton HVAC air-handler. Answered in 4 minutes by: HVAC Technician: HVAC Guru. Hello, Typically a 16X20 would be fairly standard for most applications on a 3 ton unit. However if you want superior air flow I would highly suggest putting in a 20X20 as that gives you far better airflow hands down., A TXV is used for precise metering on the 6 ton to 12.5 ton and high SEER 3 ton to 5 ton products and a fixed orifice is used to keep the cost of the product down on the 3 ton to 5 ton product. Two independent refrigerant circuits and compressors are used on the 7.5 ton to 12.5 ton units for economical and precise control., 1.5 ton duct. i'm going to be installing a new duct system in the attic.900 sqft house 1.5 ton unit.total trunk line going to be about 20ft what size should my trunk line be? there will be about 6 6inch runs...thanks. To properly size your truckline you would have to calculate the duct size for your equipment., To help attenuate the supply fan discharge sound, consider using the largest supply fan available in each tonnage size. Larger fans run at a lower speed and are typically quieter. Unit selections have shown a 10 dB reduction in the 250 and 500 Hz octave bands at 32,000 cfm and 5" of fan static for some fans., Nov 9, 2018 · The return grill size would be 24x30. The run would be approximately 10-15 feet. Thanks! In many cases 18" will be large enough. But I can't see how its being installed in your home to know for sure. However, a 24x30 return grille is not large enough for a 4 ton unit. , The duct sizing chart suggests a 10-inch duct. But with the extra length and bends, you might consider bumping it to a 12-inch diameter. That's like choosing the slightly bigger moving truck to ensure all your stuff fits and arrives at the new house smoothly. Step 4. Lastly, consider the material., Recommended airflow is typically 400 cfm per ton of AC. A 3 ton AC would therefore need 1200 cfm airflow. With only 423 sq in of return your air velocity through the grille would be just over 400 ft/min, a good number as far as noise is concerned. Air velocity of more than 500 ft/min will be too noisy for a residential system., Aluminum Supply Tubing, 2" x 25', R3.3, TFS, 4/bx (UPC-25T-4, Unico) ... It can deliver up to 9 tons of air conditioning in the same space as a 3-ton traditional unit. Technical Specifications: Duct Size: 2.0: Matching Duct Type: Aluminum Core: Duct Shape: Round: Material: Multiple: Flex or Rigid Duct: Flexible: R-Value:, It has a 2 ton Skymark HVAC unit that produces 750 CFM for heat and 800 CFM for A/C. The unit is located in a bedroom closet. There are 2 supplies coming off the HVAC unit supply plenum: - 16 x 6 rectangular sheet metal duct feeding the bedroom. - 12 x 6 rectangular duct feeding the living room (and remainder of apt), fed by 9" flex duct …, 29 Feb 2016 ... How to Use a Duct Calculator. Samsung HVAC America · 11K views ; HVAC Pre Design 3 Preliminary Layout Continued and Duct Sizing. Brad Dixon · 17K ..., The high cost is $12,000 for a 3.5-ton packaged HVAC system with a SEER of 21 and moderate duct modifications. 3.5-Ton AC Unit Cost Calculator. 3.5-ton AC units are a fairly common size, used for homes averaging 2,000 to 2,200 sq.ft. They come in several types and efficiencies, impacting cost and quality., It's a two ton unit and I can't figure out how to size the plenum. The Air handler is central in the attic, only 6 runs so I'm going to do a radial duct system. Example. System Info-. 2 ton system with supply air opening of 16.375 x 11.3 Inches. 6 flex duct runs total; 5 8" runs 1 4" run. Longest run is 15 feet. 1., Supply Adapter, 10" Round (UPC-61-4860, Unico) ... It can deliver up to 9 tons of air conditioning in the same space as a 3-ton traditional unit. Technical Specifications: Duct Size: 10" Unico Model: 4860: Matching Duct Type: Round Metal: Duct Shape: Round: Material: Galvanized Steel: Flex or Rigid Duct:, Hello! I am the owner for 9 months of a 3,500 sqft one-story home over full basement in central NJ. It was built 25 years ago and is of average++ construction. The heating and A/C is provided by 2 identical natural-gas, forced air furnaces and 2 X 3-ton A/C. All ducts are in the basement. The furnaces and A/C are original, so about 25 years old, Carrier units, 100K BTUH furnaces that have a ..., What size return duct do I need for a 3-ton unit? A 3-ton unit uses approximately 1200 CFMs or approximately 400 CFMs per ton. The lowest you should go is about 350 per ton when the conditions are very humid., What size ductwork for a 2.5-ton unit? For a 2.5-ton (30,000 BTU) HVAC unit, you would typically use ductwork with a total cross-sectional area of around 600 to 700 square inches. The specific duct size and layout would depend on factors like the type of system, design requirements, and local building codes., The size of the return air duct you would be getting for your 5-ton unit depends on if you would want a round or rectangular duct; the timely round return for your 5-ton unit is 2” in diameter, while for a rectangular duct, you would need a duct of 20” ×18” width by height. Using the correct duct size for your device would save you from ..., Installing a window AC unit costs between $200 and $1,300, depending on size and brand. These units work like central air conditioners, pulling in outside air, cooling it and circulating it into ..., 29 Apr 2013 ... Explaining what is an air duct calculator, how to size ... How to Design Duct Work for a 3 Ton Air Conditioning system ... How did we know when to ..., The supply plenum sits directly on top of the AH/furnace or the AC coil in an upflow configuration. These two examples are very common for two-way duct systems. Example 1 with straight take-offs act the same as any square or right angle fitting. Air does not like to make quick 90* turns, therefore example 2 will give you much better airflow., Example: A 10 ton packaged unit in a rooftop application placed on a curb. Equipment entering pressure -.46-in. w.c. Equipment exiting pressure +.51-in. w.c. Total External static pressure .97-in. w.c. Compare the measured static pressure to the equipment rated maximum total external static pressure to assure the system is operating at less ..., The branch lines clearly state its size but the supply runs do not. ... I spoke with an HVAC contractor yesterday about potentially replacing my flex supply ducts with metal ducts. ... from the return air to the supply air; however, it's just an air flow issue. The blower fan is set to high. We have a 3 ton unit for our roughly 1,500SF house ..., One is that the supply plenum should be no larger than the blower opening off the top of the air handler, which seems small, at only 16x11". But most opinion, particularly from the HVAC supplier, is that the plenum should be the same size as the overall A.H. cabinet size, which is 17.5 x 21". That's how the current one is., Note: You may need an additional adapter collar for your size flex. Sheet Metal Adapters convert square supply/return to round. (Fits 2.0 Ton - 5.0 Ton, Medium and Large chassis Units) This listing is for the product only., Condensing Units. The building blocks of Blue Star's solutions are its products. The Company offers the most comprehensive range of air conditioning products in the country. A wide range of models is available in each product category to ensure that the air conditioning system design is implemented without any compromise., , In most cases, if you are installing ducts in each room where there is a supply, you will want to go with the same size as your supply vents. If you are installing just one or two return vents, you will want to go with a 12-inch return for 2-ton units and lower. 14- inches for 3 and up. 16-inch should be suitable for 4 ton systems, whereas 5 ... , Originally Posted by tigergrad97. 12" -14"...by appearance anyway. 2-14" would be ok for 3 tons (depending on length and bends/turns. So your a bit small for 3 tons if 1 is 12" and the other 14". Which may be why your current 3 ton struggles on some days. Reply. 11-10-2010, 09:09 PM #10. tedkidd. Professional Member*., 2. Rigid Duct. Apart from the air conditioner itself, the rigid ducts is the largest component in a ducted air conditioning system. The rigid duct is usually made of galvanized iron at about 0.5mm to 1.0mm thickness depending on the duct size. The entire rigid duct must be insulated to prevent condensation., 2 Jul 2021 ... ... Duct Crimper: https://amzn.to/2TxE1pT Klein ... 3:11 Jumper Ducts & Transfer Grilles 4:48 Central Return Air Option 6:00 Supply ... ton 11:30 ..., What size round duct is best for a 2.5 ton unit on a mobile home that's 13 x 60. Contractor's Assistant: Did you double-check the thermostat? And what about the unit's filters? I need to replace my duct system, what size round duct is best for a 2.5 ton unit? on a mobile home that's 13 x 60y duct system, Each ton of refrigeration can cool 12,000 BTUs each hour. Learn how to calculate air conditioning tonnage by multiplying the unit's tonnage by 12,000. Using this formula: A 2-ton unit can cool 24,000 BTUs per hour. A 3-ton unit can cool 36,000 BTUs per hour. A 4-ton unit can cool 48,000 BTUs per hour.