Attic Ductwork Design

1 the outside winter design temperatures shall be those listed for the january 2 5 percent values.

Attic ductwork design.

5 a kitchen exhaust duct not equipped with a filter at the inlet end shall be designed and installed so that the entire duct can be cleaned. When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space. Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water. The purpose of residential ductwork design is to properly distribute the airflow produced by your heating cooling system to your house.

6 ductwork for cooking appliance exhaust fans shall a be of noncombustible corrosion resistant material and. With hundreds of square feet of ductwork surface area in the attic and a δt of 75 f the air coming out of the vents in your home will be significantly higher than 55 f. 6 tips for good ductwork design. Ductwork design mistake 5.

Notes to table 9 32 3 10 a. Install ductwork so that it is in direct contact with i e. Note the size for each duct section starting. To maintain balanced air pressure and air movement your duct system needs return vents for air in the room to be pulled back into the hvac system.

Throw duct leakage into the mix and the problems are even worse. Install the ductwork in accordance with a low profile compact duct design. All information provided in this document is to be used as a guideline only. Residential ductwork design starts on the drawing board.

Adapt the design to the type of unit. The length of ducts is a key consideration. Ductwork may seem simple on the surface but there is a lot of planning that goes into designing efficient and effective home ventilation systems. It was new when the ac was put in 7 years ago.

Understanding basic residential ductwork design please note. 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. The design and efficiency of the ductwork system bears heavy on energy bills home comfort and a c and furnace performance as well as efficiency and wear which is notable considering the typical ductwork has no moving parts. I called out the original hvac company and they took a look and said they saw no water.

The longer the duct the more powerful blower it will require. The attic ductwork is flex duct work.