Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: If the gas supply goes off temporarily then comes back on does the unit have means to keep raw gas from flowing through it into the room?
Document: This unit replaces another brands 30k BTU unit that went out of business and had no parts support. Install was super easy and operation has been faultless so far. If all goes well it should last several years.One bit of advice I'll offer. If you're thinking about a heater for the garage or other room give it some thought when it's spring or summer and hot out, you'll generally find sweet deals on these types of heaters.
We purchased this unit because in the winter time the bathroom is SOOOOOOOOOOO cold! With the recommendation of our propane company we purchase this unit. When I ordered this unit found that I selected the wrong type of gas unit when it was getting installed, contacted the company and they were SOOOOOOOOOOOO wonderful like the unit, replaced it with no questions asked! Shipped out the correct unit to get it here in time for the installers to install and then shipped back the wrong unit.
About the only minor dings I would give are these:1. The screw-on attachment point for the gas is on the bottom of the unit, so if you wanted to set it on the floor, you will have to place it on some type of stand (mine is on Bricks) - obviously, you should make certain everything around the unit is fire-proof :)2.
I purchased this unit to go in my basement for an emergency heat source for my house. I have used it a few times the past week to augment the heat in my basement due to the subzero temperatures, It is performing as expected. BTW, the original unit did not work when I first installed it (bad gas valve) and the supplier processed the return and sent a new one immediately. Very happy. Great service
I installed it myself. I already had a natural-gas supply outside the lanai on the patio (for the grill). I drilled through the concrete block wall to provide the gas to connect to the heater. I mounted the heater and connected it with a kit from Lowe's. I don't have a video, but could show some nice stills, except this review format doesn't allow. :(
Its a perfect heater to warm every corner of your room and i strongly recommend it. Getting right installation parts can be hard but its worth it.
Use in an addition. Very large room. Looks nice and warms the room quickly and efficiently. Would definitely recommend. Easy to turn off and on.
Bad winter here in Michigan lucky only lost power once but did not have this .easy to install works great if you don't want heat in all rooms.so we are ready if the power goes out again. fast shipping thanks
Bought this for a 10x28 kitchen addition. Hookup was easy after buying the optional kit. Does what it is designed for Heat! I use a small fan nearby and it covers the whole area. No condensation on windows as others posted. Burn in smell goes away quickly too.
I love this I installed it in the basement of my 100 year old house and it is warm enough to heat my back porch. The only thing I wish I would have gotting was the same one with the thermostat. It still works great for the huge space I am heating.
Answer: yes