Are there any tube amps that don't give off any---


HEAT!! 
I have a very small dedicated listening room, and so I was wondering IF there are any tube amps..I guess hybrid or all tube ( although more all tube)- that simply give off NO heat or very very little heat after full warm up. Since the climate seems to be getting hotter, it would be nice to have the benefits of a tube amp with no heat whatsoever. ( is this even possible?). 
Running AC isn't my preferred way of listening in a small room, so this question is now on my mind. I do not want to consider Class D solid state amps...as I know they are an option from a heat perspective...but just tubes.
128x128daveyf
Al Gore says there is no relationship between tube amps and climate change :).  
Looks like LTA would be a good choice. However, I would like to recommend you to consider looking for those amps using small power tube like EL84. Manley Stingray (20 watts), E.A.R. V12 (50 watts), Luxman SQ-N150 (10 watts). 
daveyf,

Check out this amp.  It has tubes to give you that tube sound, but they’re not the output tubes.  Much less heat!

https://www.psaudio.com/bhk-signature-250-amplifier/

they have a 300 watt amp also.

All the best

JD