Attic Furnace Ductwork Layout

Choose the right duct size and layout.

Attic furnace ductwork layout.

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. Ensure proper ductwork sealing. Area as the furnace nor should they be located by moisture sources such as kitchens or bathrooms. The layout and installation of the duct system will incorporate these basic principles of good ductwork design.

Make the layout as symmetrical as possible with branch ducts spaced evenly along the trunk duct and each branch of similar length. 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. How to design a duct for an hvac application. A delivery system for all forced air systems furnace or air handler heating or air conditioning or both.

Situate the air handler close to the center of the layout to minimize the length of ductwork spans. Ted also has inherited a powered attic ventilator. To account for all the necessary factors many professionals use a tool called acca manual d. Duct delivers fresh air and humidification into your home.

When you place a furnace in the attic to take advantage of its. You might not receive the same air movement benefits if the unit is in a garage either. When it comes to heating and cooling homes forced air distribution is king. Understanding basic residential ductwork design please note.

Heating and cooling systems are responsible for close to 50 percent of the energy expenses in the typical home and the ductwork plays a substantial role. 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. Trunk line layout is provided in the. Most heating cooling systems now are dual units with different elements for heating or cooling but sharing a blower and ductwork to distribute.

Yeah my canadian friend robert bean of healthy heating pushes radiant for both heating and cooling and my texas friend kristof irwin drank that koolaid and installed what may be the first radiant cooling system in texas. 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. Return air cfm must be equal or greater than supply air cfm. 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.

All information provided in this document is to be used as a guideline only. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal. A furnace in the attic is a design that works for all homes.