could a central ac unit be installed in a crawlspace rather than in the attic ? my 2 reasons for this question #1 cooler in crawlspace for unit especially in summer,,#2 if installed in attic or space above i have a concern about the drain backing up and trying to service it.. any feed back is appreciated ( house is going to be built new) thanks again jim
Actually, the true AC part of the system is outside and needs to be. The furnace part (if it's a split system) is inside which also has the blowers used for AC.
While nothing is foolproof, a properly installed attic unit is fairly immune from overflows. The unit will sit in a metal pan about 3" deep with a drain to outside. There is also a float switch in the pan that will shut everything down in the event that the drain is clogged.
If it's a 2-story house, it is common for the upstairs unit to be in the attic above. This cuts down on duct work, making for a more efficient system.
It's also OK to put things in the crawl space or basement - provided there is enough room. This would be for the unit that services the main floor.
In either location, there must be a large enough access for a full replacement service if needed in the future.
Yep. I have an attic unit and a basement unit in mt 2500 square foot two story house.
Any advice given here is general in nature and is not necessarily valid for your given area. If in doubt check with your local codes enforcement department for what is required when doing electrical, plumbing or structural work on your house. Permits may or may not be required in your area and home owners may not be able to DIY some tasks. I have no way of knowing if you have the skills needed to complete the tasks you are asking about, when in doubt seek professional assistance.
My advice may be worth exactly what you pay me for it. :-) For the record I did not stay in a Holiday Inn Express last night.
Normally Central AC units are not installed in crawlspaces for a couple reasons. Some of which you mentioned. But you also have to worry about venting the unit as well. Without proper air flow there is a possibility that the unit will not perform as well as it should.
You can put the air exchanger there but not the condensing unit.
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