Attic Furnace Duct Design

Adapt the design to the type of unit.

Attic furnace duct design.

You might not receive the same air movement benefits if the unit is in a garage either. Situate the air handler close to the center of the layout to minimize the length of ductwork spans. To promote balanced air circulation through the supply ducts home and return ducts the ductwork should be simple in layout accurately sized sealed insulated in unconditioned spaces and installed in the right places. Make sure your hvac contractor follows these duct design best practices and principles using manual d.

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. A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic. 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. One on a concrete slab.

The layout and installation of the duct system will incorporate these basic principles of good ductwork design. A furnace in the attic is a design that works for all homes. Number one is the heating and cooling load calculation using a protocol like acca s manual j or the ashrae handbook of fundamentals. Certain types of air conditioning systems like heat pumps require larger ducts.

Then by heating cooling that air delivering the newly conditioned air to your home. You ve got to know how much heating and cooling you need for each room in btu hr. This involves return air unconditioned coming into the heating cooling system. Consider your equipment type and supporting systems.

Well mainly it s a way to save space. An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan. Continuing education and development inc. Designing a duct system is important but there are a few critical steps that come first.

If your system includes air purifiers with activated charcoal filters these also affect air flow and may require larger ducts and or additional air returns. The purpose of residential ductwork design is to properly distribute the airflow produced by your heating cooling system to your house. Hvac how to size and design ducts. High efficiency furnaces aren t usually recommended for an attic.

So why put an hvac system up in the attic at all. Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space. Attic hvac systems save space.