Installing High Efficiency Gas Furnace In Attic

There are several other important aspects of high efficiency furnace venting.

Installing high efficiency gas furnace in attic.

With the attic sealed we couldn t smell the odorant and the gas could accumulate. But if your furnace is in a sealed attic or encapsulated crawl space open combustion does have the potential to cause problems. In an unvented environment the 95 furnace is a safer choice. This high efficiency venting system must be installed when you install the new furnace.

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. High efficiency furnaces may be installed in basements ground floor utility rooms garages or attics in open spaces or confined closets. Ashrae estimates the average life expectancy of a new gas furnace to be 15 years largely as a result.

High efficiency gas furnaces with sealed combustion chambers require such an arrangement when installed in a sealed attic. Other aspects of high efficiency furnace venting. I had a new high efficiency furnace installed in my unheated attic and had the same problem of the furnace not running because the condensate trap had ice in it. For example additional attic wall or crawlspace insulation.

The furnace is a 58mvb120 120 high efficiency unit. But that s simply not an issue that we need to worry about in southern california where our winters are mild. High efficiency furnaces aren t usually recommended for an attic. However one contractor cited the danger of leaking gas being trapped in the attic and causing a fire or explosion.

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. I didn t get much help from the gc or the hvac contractor he hired so i installed a clamp lamp with a 60 watt bulb to shine on the trap. Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space. Installation guide for existing houses.

Always read the furnace manual and check local building. That means you have higher energy costs and less efficiency since you re blowing the air down instead of allowing it to rise naturally. After the installation was done i found out that these high efficiency furnaces are not recommended in the attic because the condensate trap can freeze. Hello everyone i recently had a new hvac system installed in my attic.

It is a carrier heat pump system with a propane furnace backup. Building will have an impact on the furnace.