Quick Answer: What Size Should The Return Air Grill Be For A 5 Ton AC Unit?

What size return do I need for a 3 ton AC unit?

Here’s some information on basic duct sizing.

Remember you’ll want ~400 CFM per ton.

The lowest I’d go is 350 per ton for very humid conditions..

Can a return air duct be too big?

Can an air return be too big? No, an air return cannot be too big, except in extreme cases where a closed room is temporarily under negative air pressure. Return vents maintain air pressure, filter out debris, and are critical to the efficient operation of any HVAC system.

Does a higher SEER cool better?

The more efficient your cooling system is the less energy it will take to cool your home. When it comes to SEER ratings, the higher the SEER rating the greater energy efficiency and that also means lower energy bills. … The most efficient SEER ratings of air conditioners fall in the range of 20+.

How many CFM can a 6 duct handle?

100 CFM“For example, most techs will tell you that a 6” duct will provide about 100 CFM.”

Where should a return vent be located?

Return registers also perform best on an interior wall—not one adjacent to the outdoors. Instead, that’s where your supply registers should be, ideally under a window. Lastly, make sure the return registers aren’t too close to the supply registers because that could cause your system to work harder.

What size AC do I need?

A general rule of thumb is that if your home is well insulated with newer style windows, you can select the smaller size system that falls within your total square footage. If your home is two story it will place less of a load on the system in the downstairs area as the second floor acts as additional insulation.

What size AC do I need for 2000 square feet?

STEP 1: Determine how many BTUs of heating and tons of AC you needHouse Square FootageBTUs Needed1,200 – 1,40023,0001,400 – 1,50024,0001,500 – 2,00030,0002,000 – 2,50034,00010 more rows

What happens if there is not enough return air?

If there is not enough return air available, your HVAC system will not heat or cool properly. … If not enough air is brought back, your HVAC system will not be able to keep up with temperature demands. In some cases, two returns may be necessary to provide enough return air.

How do you calculate duct size?

How to Determine Duct Size Per RoomLook at the plate on your furnace to figure out how many BTUs it produces. … Multiply that number by the amount of cubic feet of airflow per minute (CFM) your type of furnace produces. … Divide your number by 10. … Calculate the size of your ducts vents by multiplying the length by the width.More items…

What is the difference between supply and return air?

The supply vents in your home blow conditioned air out into your rooms. This air travels from your heating and cooling system, through your ductwork and out of the supply vents. … The return vents in your home suck the air from your rooms into your return ducts and back to your heating and cooling system.

How much does it cost to install a return air vent?

Generally, a return air plenum will cost approximately $50 to $60 per unit. The other costs to consider are those for the labor and materials needed to install the return air plenum. The installation takes an average of about five hours with the sum of labor costs between $290 and $370.

What size should a return air duct be?

25 feetAs for any duct, size is dependent on duct length, air flow, and allowable static pressure drop. For most systems, the minimum duct size (see Table 1) is sufficient for up to 25 feet (8 m) with no more than three 90° bends.

Can you have too much return air?

It isn’t possible to have too many returns.. However, the blower will move only so much air. The ductwork will move only so much air. If you double the number of current openings, the total air movement at each one will be cut in half- yet the total amount of air moved remains the same in an ideal, perfect example.

How much does a 5 ton Trane AC unit cost?

Trane AC Prices by Unit SizeUnit SizeCooling AreaUnit Only Cost3 Tons1600 – 1900 sqft$1,9503.5 Tons1900 – 2200 sqft$2,1604 Tons2200 – 2600 sqft$2,3505 Tons2600 – 3200 sqft$2,7603 more rows

Do you need a return air vent in every room?

While it is a myth that air return grilles are required in each and every room in the house, it is definitely necessary to have more than one of these grilles installed at strategic places in the house. The most important place to have these would be the bedroom.

How do you size a return air grille?

In order to determine the size of the tonnage you have, simply divide 980 by 400 CFM per ton. Doing this for this space will yield a tonnage of 2.45. Always round up and we have a tonnage value of 2.5. A return air grill should be sized for an air speed of 300-500 FPM(feet per minute).

How many square feet will a 5 ton AC unit cool?

METHOD 2: Go by square feet + climateHVAC System SizingBlueGreen3.5 tons2101-2300 sf2001-2250 sf4 tons2301-2700 sf2251-2700 sf5 tons2701-3300 sf2751-3300 sf8 more rows

How many square feet can a 3 ton unit cool?

ZONE 1ZONE 41.5 Tons600 – 900 sf700 – 1050 sf2 Tons901 – 1200 sf1051 – 1350 sf2.5 Tons1201 – 1500 sf1351 – 1600 sf3 Tons1501 – 1800 sf1601 – 2000 sf3 more rows

What size return do I need for a 4 ton AC unit?

(Example: 4 (ton unit) x 144 square inches = 576 squared. The square root of 576 is 24. Therefore, your return air duct and grill size will be 24 by 24 inches.)

Should return duct be larger than supply?

Yes, return ducts are usually larger than supply ducts to ensure that air within the home is balanced. There are generally more supply vents in the system creating the need for return vents to be larger. Ensuring that there is sufficient air supplied and returned is critical to maintaining an ambient environment.

Should my air return have a filter?

Should I Use a Filter in My Return Vent? For most people, return vents filters are suggested. They won’t cause any damage to your air conditioning and are easy to install; there’s no need for an HVAC technician.