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

@atmasphere Actually my AC works well enough to cool the room, BUT the issue is that it is a little noisy, just as any fan vent would be.
Like you stated, my tube amps also run coolish when they are in standby, but once the voltage is applied, up goes the heat expansion. My amps only use two KT150’s per side, so in the big picture, they do NOT give off a huge amount of heat, but they give off enough to really make my very small room nice and toasty within about an hour. My ss amp does the same thing, after about an hour and a half; but here’s the thing, it would be great if a tube amp existed that gave off no real heat after multiple hours...maybe this isn’t realistic, given the technology, but is this possible??

No.

But trust me on this one- I've seen it- a fan is a **LOT** quieter than an air conditioner! You can hardly tell its on, yet the installation I saw kept the room cool despite a pair of class A triode OTLs with 42 power tubes per channel making over 500 watts. Yet the fan was a whisper.

SS output and tube input sections.

Hybrid amps can be fairly cool.

But, a 10-15watt per channel integrated tube amp, is still going to put out a good ~100 watts of heat.

LTA is a good rec but also smaller low powered amps won't heat the room overly much. My amps been playing for about an hour just held my hand over it and its barely warm. That's a 17 watt pushpull amp, a SET amp would also likely be cooler. How much power do you need?

bottom line, any tube power amp with any meaningful power output will have output tubes that will provide a decent amount of heat

flea watt amps still produce heat - 2x 300b’s or 211’s or 845’s or el84s - of course then it is just a matter of degree, one person’s ’minimal and acceptable’ is another’s ’too much’...

hybrid amps might be the answer... really only low level signal tubes produce what most folks would consider insignificant amounts of heat