I d lean toward a conditioned crawl because of the sum total of benefits by making the space conditioned.
Which is better hvac in attic or crawl space.
A better option for the equipment and the health of the structure and its occupants is to make whichever space you choose a conditioned space and put the unit and ductwork in it.
Attic hvac system saves space.
A crawl space by nature is a special area of the home having both benefits and detractions when locating a unit.
When kept dry and conditioned a basement the ideal spot for your hvac set up.
Strap ducts out of insulation with 3 ductstraps per specifications.
Knowing the disadvantages of attic install and the crawl space install.
Seal supply boxes with mastic.
Supply air from the hvac system if you encapsulate the crawl space adding a little bit of air from the hvac system is probably the most common method used.
I vote for the attic.
Sure if you can find enough space and afford the large cost to have someone poorly carve up the inside of your house to get the proper sized ductwork through the house.
It s probably also worst for most climates if the hvac systems and ductwork are located in the crawl space.
Here in central sc almost the same climate as you some of the local electric companies will not give the energy good cents discount if the ductwork is in the attic.
Air conditioner furnace in attic installations cost less.
Quit writing papers and go try a seat of your pants experiment.
A hvac unit in a crawl space presents special concerns.
There are problems with the ductwork in the crawlspace too but the system will typically be more energy efficient.
Installing a heating ventilation and air conditioning hvac unit in a crawl space presents an entire series of pros and cons.
09 06 2007 08 20 am 9 dcmcm5.
In the winter a crawl space can be significantly colder than the living spaces of your home.
Good luck getting better cooling in the upstairs in an old home using a basement hvac system than one in an attic.
This means that like an attic or unfinished basement you don t heat and cool it.
Except when the system is left to the elements and neglected of regular systematic maintenance.
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 crawl space is an unconditioned space.