- What size return do I need for a 3 ton AC unit?
- How big should my AC return be?
- Should return duct be larger than supply?
- How do I choose a diffuser size?
- Can you have too much return air?
- How many square feet will a 4 ton AC cool?
- What size should the return air grill be for a 5 ton AC unit?
- Can a return duct be too big?
- What happens if there is not enough return air?
- How many square feet will a 5 ton AC cool?
- What is the average cost of a 4 ton AC unit?
- Is a 16 SEER worth it?

## 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..

## How big should my AC return be?

Large Returns A typical supply vent is 4 by 10 to 12 inches and a typical return vent is 16 by 20 inches or larger.

## Should return duct be larger than supply?

Return ducts are always larger than supply trunks. 3. Supply air and return air is always equal because its a closed loop system to the equipment.

## How do I choose a diffuser size?

The air con diffuser sizing is determined by:The area to be cooled/heated.The dimensions of the area length and width.The aesthetics of the space.The height of the ceiling.Larger diffusers/ducts move more air with less static. … Undersized diffusers will restrict airflow and create noise. … Correct sizing is important.

## Can you have too much return air?

Having several return vents (ideally one in every room, but even two or three is better than just one) creates consistent air pressure. If you have one return vent, your home is fine.

## How many square feet will a 4 ton AC cool?

ZONE 1ZONE 23 Tons1501 – 1800 sf1501 – 1850 sf3.5 Tons1801 – 2100 sf1851 – 2150 sf4 Tons2101 – 2400 sf2151 – 2500 sf5 Tons2401 – 3000 sf2501 – 3100 sf3 more rows

## What size should the return air grill be for a 5 ton AC unit?

Using this approach, two 20-in. x 25-in. return grilles will be the right choice for a five-ton HVAC system in order to actually deliver 2,000 cfm back to the blower without causing the return to hemorrhage. Since the conventional wisdom of designing return grilles at 144 sq.in.

## Can a return duct be too big?

Supply ducts carry conditioned (heated or cooled) air into your rooms, while return ducts suck conditioned air back into the heating or cooling system through vents. 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.

## 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 many square feet will a 5 ton AC cool?

Units that are 2 tons can cool off 901-1200 square feet spaces. Units that are 2.5 tons can cool off 1201-1500 square feet, etc. This pattern continues up to units of 5 tons that cool off 2401-3000 square feet, with every half ton increase adding about an additional 300 square feet.

## What is the average cost of a 4 ton AC unit?

Average AC Unit Prices by Size or CapacityCentral AC Unit SizeAC & CoilAC & Coil Installed Cost3 Tons, 36,000 btu$1,650$2,9903.5 Tons, 42,000 btu$1,780$3,2504 Tons, 48,000 btu$1,860$3,3505 Tons, 60,000 btu$1,920$3,5903 more rows

## Is a 16 SEER worth it?

While more expensive than their 14 SEER counterparts, 16 SEER systems offer a significant increase in energy efficiency. In fact, 16 SEER units are up to 13% more efficient, which saves you hundreds of dollars in energy costs over the years.