Proper Attic Ductwork Layout

2 if the ducts run through the attic don t hang them they need to lay on the ceiling joist or bottom cord streached out and insulation heaped over them. Ensure proper ductwork sealing. This is an especially relevant tip for flex ducts more on that in a minute but you need to make sure any ducts in your attic have proper support.

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You can t do both streach out the ducts and get good radius bends at the same time.

Proper attic ductwork layout.

Includes a full worked example as well as usin. 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. Number one is the heating and cooling load calculation using a protocol like acca s manual j or the ashrae handbook of fundamentals. You ve got to know how much heating and cooling you need for each room in btu hr.

Choose the right duct size and layout. Note the size for each duct section starting. A duckwork system that is designed well decreases the chances of poor connections and leaks. Adapt the design to the type of unit.

To account for all the necessary factors many professionals use a tool called acca manual d. Everytime you have to do from a straight bend of over 20 degrees use a metal elbow. Hard ducts without proper mooring will be unbalanced and unbalanced ductwork might be to blame for a number of hvac problems. Designing a duct system is important but there are a few critical steps that come first.

How to design a duct system. Our team of knowledgeable hvac technicians at commonwealth cooling and heating understands the importance of choosing proper ductwork design for your home or business. Residential ductwork design starts on the drawing board. 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.

It is one of the most important factors that affects the overall efficiency of your hvac unit. In this video we ll be learning how to size and design a ductwork for efficiency. Improperly supported flex ducts will sag which cuts down on airflow. One on a concrete slab foundation for instance will have to start with a vertical duct to a ceiling or attic.

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