Central Air Ductwork Design

In this video we ll be learning how to size and design a ductwork for efficiency.

Central air ductwork design.

The 2 primary causes of reduced air flow in ducts. 1 psi equals 27 7 inches of water gauge. Sketch a rough design using a central supply duct from the unit to the opposite end of the house with branches forking to each outlet. The secret to moving air efficiently through your duct system my article on david hill s 2015.

Let s look at some of the different types of ducts needed for air conditioning. In a split system the most common design refrigerant circulates between an indoor coil and. Hvac ductwork sizing is critical for proper heating and cooling in every room. Duct system is pressurized by three pressures.

Residential ductwork design starts on the drawing board. Flexible ductwork flexible ducts are typically tube shaped made of a wire coil covered with a bendable durable plastic and surrounded by insulation. A true central air conditioning system uses ducts to distribute cooled air throughout the house. Includes a full worked example as well as usin.

Duct design 5 sizing the ducts related articles. Ordinary heating ventilating and air conditioning duct systems read air pressures at 0 4 psi or less often much less. Duct design 4 calculating friction rate. This is because an additional branch now feeds the three smaller branches allowing some of the air to smoothly break away from the main flow and feed into these smaller branches.

Have to get the air back to the furnace. Proper ductwork design ensures the level of air flow that your hvac system needs to operate efficiently and provide the comfort you want and expect in your renovated space. Determining the most efficient and effective design for heating and cooling ductwork is not an afterthought to the new construction process lowest price and speed of installation should not be your primary concerns because duct performance impacts energy efficiency operating costs comfort and indoor air quality. These ductwork tips will help balance your air conditioning and heating system.

Crippling air conditioning problems caused by poor air flow. One on a concrete. The science of sag flex duct and air flow. The three branches within the main duct now receive equal air flow making a significant improvement to the design.

This kind of ducting is. Ducts for central air conditioning can also be used for heating and filtering systems. How to design a duct system. A common duct pressure of 0 25 inches water column is equal to 0 25 divided by 27 7 in wc psi 0 009 psi.

Don t kill your air flow with this flex duct disease.