Attic Furnace Enclosure

Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space.

Attic furnace enclosure.

Most often the attic is sealed by installing spray foam insulation at the roofline thus bringing the attic inside the building enclosure and turning it into conditioned space directly or indirectly. It will not require long lengths of pipe to deliver heat to the rooms as a basement furnace does. If the attic has a floor area of 800 square feet and an average height of 4 feet for example the volume would be 3200 cubic feet. Divide that number by 50 to find the maximum capacity appliance you could put in the attic and you get 64 000 btu hr.

A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic. The rods need to be of sufficient length to allow for proper clearances from combustible materials. A furnace can be installed various places in a house in a basement an attic a garage a ground floor utility room or outside the walls. High efficiency furnaces aren t usually recommended for an attic.

When you place a furnace in the attic to take advantage of its. But you could put only one in this attic. Furnaces in basements. An attic furnace is closer to the upper stories of a multi level home.

A while back i wrote about the incompatibility of putting an atmospheric combustion furnace in a sealed attic. So why put an hvac system up in the attic at all. The horizontal furnace may also be suspended from the joists using 3 8 all thread rods with pieces of angle iron underneath the furnace to form a hanging rack at both ends and the midpoint. That would be a medium sized furnace.

How to build a furnace enclosure. Attic hvac systems save space. The good news is that some installers understand this problem and seek to address. A furnace in the attic is a design that works for all homes.

Air ducts lose a fair amount of heat through leakage so shorter lengths are more efficient. You might not receive the same air movement benefits if the unit is in a garage either. Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts. An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.