Hvac In Crawl Space Vs Attic

Animals love duct board flex 09 06 2007 02 11 pm 12.

Hvac in crawl space vs attic. The crawl space is an unconditioned space. Duct through corner of closet from attic back to crawl to circulate dry attic air and close the foundation vents. Rarely will a sealed foam insulated attic deviate more than 15 degrees from the living space temperatures below it. If you use duct board flex in crawl space you will have problems.

The biggest advantage of having an attic furnace is that it s a space saver. This means that like an attic or unfinished basement you don t heat and cool it. There s usually nothing up in an attic aside from some stored items so a furnace won t take up useful space. It s easy to see your point about eliminating ductwork from the attic.

I vote for the attic. Compare that with the daily 140 degree temperatures found in vented attics. The university of maine recommends proper venting of a crawl space to prevent radon gas buildup. If the crawl space does not have proper ventilation radon concentrates in the trapped air inside the crawl space.

A two room addition on the 1st floor has limited attic space and a 4 crawl space. Seal supply boxes with mastic. Strap ducts out of insulation with 3 ductstraps per specifications. Attic hvac systems save space.

So why put an hvac system up in the attic at all. Insulate and air seal the floor with open cell foam put ductwork and mechanicals in the attic install a radiant barrier and mastic seal the ducts. The problem with uninsulated ductwork. However i have two questions if i want to centrally air condition my entire house.

O is air conditioning the 1st floor effective with floor venting if i run ductwork in the basement. Place 40 ft drainage pipe with holes across center floor of dirt crawl space attach this to duct line to attic space with an inline 90 cfm silent exhaust fan at the other end of attic run a 6 in. Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts. Well mainly it s a way to save space.

That means having it placed in the attic or a crawl space is a bad idea because you are increasing the risk of causing damage to the equipment. Some things to consider about attic vs. View profile view forum posts view forum threads new guest join date sep 2007 posts 2 post likes. An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.

You ll also free up a closet. The space is taken up by plumbing hvac and electrical wiring. Knowing the disadvantages of attic install and the crawl space install. If you have ductwork in your crawl space the temperature of the duct will be the same as the temperature of the.