Comment Server in a crawl space (Score 2) 253
If you can seal your crawlspace, not that difficult, and if you have heat and AC ducts also in the crawlspace, you can insert a dump valve in the crawlspace (that's a weighted valve that will allow some air movement in the ducts to leak out) you have in essence made your crawl space part of your home. It will be heated and cooled as is the remainder of the house. It will not be as warm or as cool, but it will be better than being left to the changes in the weather. To do this, you install plastic on the floor and at least 12 inches up the wall. Insure you seal what is on the wall with adhesive. Then put insulating reflective plastic on the wall, leaving some room at the top for inspections. Be sure to seal all vents from the outside into the crawlspace. You heating system and cooling system will condition the crawlspace, control humidity and support your server.