there are no fans

intel Haswell i7 4th Generation CPU, Dual Core, 4M Cache, Turbo Boost Technology 2.0
8GB DDR3L RAM, 128GB mSATA 3.0 6Gbps SSD
intel HD4400 Graphics, 3200*2000 Resolution supported
2*LAN, 2*HDMI, 1*SPDIF OUT, 4*USB 3.0, 4*USB 2.0, AUDIO in/output, Card Reader
Smart Design, Fanless, Metal Case, Silent WORKING, High Speed CPU and SSD, 2 Year WarrantyNo idea...who makes it ? ?...what Model # ? ?dosent say model here but i googled kingdel and they have been around for about 10 years
Kingdel® Intel Haswell i7 4th Generation CPU Mini Box PC, Fanless HTPC, Mini Desktop Computer with 8GB RAM, 128GB SSD, 2*HDMI, 2*LAN, 4*USB3.0 Wi-Fi, Windows 10 Pro
by KINGDEL
Where are you buying it from ? ?...Link ?Looks like this one here: http://www.amazon.co.uk/Kingdel%C2%AE-Haswell-Generation-Fanless-Computer/dp/B01AFYDEL2

That should be fine - It looks as though it is using the case as a heatsink so as long as you don't shove it in a really enclosed environment it should be fine.  It's a laptop chip, not a full desktop one so the CPU is only around 15w anyway - Won't get that hot.  I wouldn't recommend running it at 100% CPU load constantly or anything but for regular usage it should be fine.http://www.amazon.com/gp/offer-listing/B01B178WIC/ref=dp_olp_new_mbc?ie=UTF8&condition=new

i know amazon has a great policy for returns

but im going to be using it as a full time htpc streaming on kodi streaming netfflix 18 hrs aday its for a homebound personthanks for input
free help that insane just joking
 thanks againHmm, I'd maybe be a bit careful with that - Just noticed that it's from an Amazon Marketplace seller, not Amazon directly so if it fails you will have to deal with the seller who appears to ship from china.  I'd also be wary of the included copy of Windows 10 Pro - On a cheap device like that being shipped directly from China, I'd be suspicious of how genuine it is, of course you can always supply your own licence or use Linux.

You may want to look at devices such as the Intel NUC and Gigabyte Brix which can be found around the same price (Albeit maybe only with an i5, i3 or Celeron chip instead of the i7) - Those would perform fine for a 1080p HTPC and would generally be a bit better supported in terms of warranty or at least find that machine being sold by Amazon directly with some sort of reasonable warranty.Everything about the whole thing stinks...
I wouldn't buy one them from a reputable seller...much less eBay...have you considered buying the person maybe a laptop from the pawn shop i found a really good one for watching kodi for $150 it came with windows 8 and i know its completely legit plus it had a 30 day warrantyConvection cooling is not a good idea. Except for very small units that have large surface area to volume.  Even so,  a small fan helps.
Academic reference:
http://physics.bu.edu/~duffy/py105/notes/Heattransfer.html