Attic Horizontal Furnace Installation

Notice the drain pan under the air handling unit to catch condensation if the primary pan were to overflow.

Attic horizontal furnace installation.

The following are a ttic furnace installation requirements based on 2009 irc and 2009 imc the codes refer to it as appliances in attics. Horizontal flow systems are most often installed in attics and crawl spaces where space is limited due to a low ceiling and a standard upflow or downflow furnace just won t fit. A furnace in the attic also costs less to install than other designs since the access point to it is usually through the roof. It is always recommended that an auxiliary drain pan be installed under a horizontally in stalled evaporator coil or 95 gas furnace.

Horizontal installation is also available for some furnace and air handler models. This is the secondary condensation pan which is installed under the air handler to save a ceiling. In a down flow furnace it s vice versa. So in an upflow vertical furnace the cold air is taken in from the bottom and the warm air is released from the top.

Horizontal installation the coil and furnace must be fully supported when used in the horizontal position. The flow refers to the direction of the air as it passes through the furnace or air handler. Attic installation horizontal flow air handler hvac airflow. Connect the aux iliary drain line to a separate drain line no trap is needed in this line.

The furnace may be installed in an attic or crawl space in the horizontal position by placing the furnace on the left side as viewed from the front in the vertical posi tion. Attic furnace access passageway and platform. Horizontal units can be installed in attics garages or basements either by placing the device on a platform or suspending it from the ceiling. This drain removes the excess water that a heating system will generate.

When you have this unit in a space that you normally don t use then it creates more usable space in your living environment. Upflow horizontal and downflow horizontal models are also available. These offer two possible configurations. This is a horizontal flow air handler installed in the attic.

One of the latest talking points in this area is the installation of a furnace in the attic.