Attic Furnace Enclosure

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 enclosure. You might not receive the same air movement benefits if the unit is in a garage either. You can build a small enclosure around the furnace with rigid foam insulation then pick up the insulation on the ceiling inside the enclosure. Aug 19 2020 explore debbie alexander s board attic ideas followed by 3897 people on pinterest. Attic furnaces are becoming more common in both residential and commercial buildings.

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. 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. See more ideas about attic rooms attic renovation attic spaces. This puts the furnace in at least semi conditioned space.

Use concrete blocks or a concrete pad to set the base of the furnace at least 4 inches above the floor to prevent any water from reaching it. A while back i wrote about the incompatibility of putting an atmospheric combustion furnace in a sealed attic. While the traditional spot to locate a residential furnace has been the basement there are many reasons why putting it in the attic is more convenient. Elevate an enclosure in a basement or garage.

One reason that ac units go up in attics is because they re cheaper and easier to install. This is one reason building codes today require gas hwhs in garages to be in separate enclosures with combustion air supplied from outside the garage the attic above the garage is acceptable. It s a lot simpler for your installer to leave ductwork loose rather than having to cover it and wind it through floors and walls. If the furnace is a fuel burning one be sure you provide air for combustion.

The door to the enclosure also has to be gasketed and the hwh must be some minimum distance above the floor of the garage.