Are Rocket Stoves/ Heaters safe?

I am new to rocket stoves as heaters for homes. I am very intrigued and desire to learn and educate myself over them. The first thing that comes to mind, is my worry about burning my future house down if I build a rocket stove for it. So how safe are they compared to a regular wood burning system? And why?

They are way safer. First of all, you can't have a chimney fire. Exhaust temps are low, as well as barrel temps, compared to a box stove. May be sparks can escape a J tube a bit. A batch box needs a door anyway. But sparks flying can be contained i think. Just the gravity and draft takes care of most. Then they won't go far, and land on the cob. Otherwise, you can put a screen around.

The most worying part is the reversal of the fire, causing smokeback and fire inside the house. But that's with a badly designed rocket. Chimney is realy important there, and it can also happen on a box stove! So, i think they are safer.

Im very new to RMH. Built my first late winter early spring. Amazing and safe. They do require fairly frequent monitoring which makes them inherently safer. Way smaller fire for same heat. Exhaust is cool enuf to not be dangerous. I am a very heavy drinker and I ran mine for 6 weeks. Actual dangerous fire part is in the feed tube. Backdraft pretty dangerous but if you build it right not a prob.

Also, if you are building on a wood floor, you need to insulate the burn tunnel from the wood.

If you are building on a wood floor, you need to reinforce the structure to support the weight!