Attic Furnace Ductwork Layout

Ensure proper ductwork sealing.

Attic furnace ductwork layout.

How to design a duct for an hvac application. A furnace in the attic is a design that works for all homes. If you re shopping around for a new a c heat pump or furnace now is an ideal time to take a look behind the scenes at the air ducts and bring them center stage in your home efficiency strategy with good hvac principles. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal.

Understanding basic residential ductwork design please note. Once all the system variables have been decided your hvac design professional can determine the most efficient ductwork design layout and calculate the correct duct size. Even if radiant distribution systems completely take over though we ll still. Duct delivers fresh air and humidification into your home.

Choose the right duct size and layout. Return air cfm must be equal or greater than supply air cfm. All information provided in this document is to be used as a guideline only. Ductwork is the channel through which the air in your home is filtered and purified or expelled to the outdoors and replaced with fresh new air.

The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago. Make the layout as symmetrical as possible with branch ducts spaced evenly along the trunk duct and each branch of similar length. The old ductwork and vents are all still in place and in good shape even insulated. You might not receive the same air movement benefits if the unit is in a garage either.

A delivery system for all forced air systems furnace or air handler heating or air conditioning or both. The layout and installation of the duct system will incorporate these basic principles of good ductwork design. Area as the furnace nor should they be located by moisture sources such as kitchens or bathrooms. Trunk line layout is provided in the.

If you don t have a crawl space or a basement then it can be a challenge to place a furnace on the ground floor of the structure. When you place a furnace in the attic to take advantage of its. Most heating cooling systems now are dual units with different elements for heating or cooling but sharing a blower and ductwork to distribute. When it comes to heating and cooling homes forced air distribution is king.

The prior owner just had a new ac system installed in which they switched from the equipment and metal ducts in the crawlspace to flex ductwork equipment in the attic where temps have regularly been in the 130 150 degrees this summer. Situate the air handler close to the center of the layout to minimize the length of ductwork spans. To account for all the necessary factors many professionals use a tool called acca manual d.