A level working platform or grade surface not less than 30 inches 762 mm by 30 inches 762.
Furnace platform attic.
An attic in which a fau is installed shall be accessible by an opening and passageway 30 x 30 in size.
Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space.
If the unit is not located near the attic access a catwalk from the access to the platform is.
Attic access may be reduced to 22 x 30 provided the largest piece of equipment can be removed through the opening.
The trick to the installation of a gas furnace in an attic space is routing the condensate drain from the attic down through the core of the house to the basement.
A furnace in the attic is a design that works for all homes.
You might not receive the same air movement benefits if the unit is in a garage either.
It will not require long lengths of pipe to deliver heat to the rooms as a basement furnace does.
To provide a platform all you need is some wood planks nailed to the joists in front of the furnace.
The following are general requirements for an attic furnace based on the 2019 ca mechanical code.
Attic furnace access passageway and platform attic furnace passageway and.
There is a common misconception that this is not possible for high efficiency furnaces.
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.
An attic furnace is closer to the upper stories of a multi level home.
High efficiency furnaces aren t usually recommended for an attic.
There are rarely instances when we will advise against an attic installation.
This handout is intended to provide only general information for further information contact the.
A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic.
When you place a furnace in the attic to take advantage of its.
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The following are attic furnace installation requirements based on 2009 irc and 2009 imc the codes refer to it as appliances in attics.
A horizontal gas furnace installation in an attic should be on a service platform large enough to allow for proper clearances on all sides and service access to the front of the furnace see manufacturer s i o manual.
Attic furnace walkway platform attic furnace installation must comply with you local mechanical code or imc international mechanical code if such was adopted in your area.