How To Install Gas Furnace In Attic

Here is a basic overview of what you can find in the above tutorial video.

How to install gas furnace in attic.

The drain must be installed through the core of the house as water will be flowing during the colder months. This drain removes the excess water that a heating system will generate. Attic furnace access passageway and platform. The tee features a capped nipple on the bottom which helps trap sediment.

The following are attic furnace installation requirements based on 2009 irc and 2009 imc the codes refer to it as appliances in attics. Once the gas line is connected double check for leaks by using a gas detector. The gas line is connected in the top of the tee and runs straight into the furnace. This part is a 3 man.

Put the nuts in the mounted unistruts into place so they can secure the all thread rods measure the distance between. The combustion chamber will also be vented to the exterior so not much chance of a carbon monoxide problem either. Before connecting the gas line it is recommended to install a drip leg in the form of a tee. A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic.

If you place the furnace in the attic then you must install the infrastructure in the building to force the warm air to the bottom floor. The chance of a gas leak in the attic would be slim. Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space. That means you have higher energy costs and less efficiency since you re blowing the air down instead of allowing it to rise naturally.

Mount two lengths of unistruts to the rafters. High efficiency furnaces aren t usually recommended for an attic. Mount unistruts to your furnace. Attic furnace installation must comply with you local mechanical code or imc international mechanical code if such was adopted in your area.

The total drop in efficiency can be up to 35.