This sauna heater is perfect if you have the proper sauna and do your research on how to set up a sauna; i.e. rocks, ventilation, and insualtion. I built a 4'x4'x7' sauna (slightly larger than is recommended for the heater) and it gets up to 170° in the middle of winter in Colorado. The company also has an instillation video on their website that I would recommend watching. But here's what I learned while installing this heater:1) Get good sauna stones. None are included with the heater and yes, they are vitally important. Stones are the heart of a sauna and the heater is just there to get them hot. Without good sauna stones it is just a very dangerous space heater. Be sure to stack your stones properly too, you'll need various sizes from 2 inches up to 5 inches. The smaller ones go between the coils and larger ones rest on top. Stack them tightly enough to not put weight on the coils, but loosely enough that air can easily flow through. If you stack them too tightly the unit overheats and turns off before getting the stones hot enough.2) Yes you do have to wire it yourself, or have someone do it for you. If you do it yourself, make sure you get proper "fork" connectors (5 bucks from a hardware store) and use a thick enough wire to handle the draw of 110v and 18.2 amps.3) This is the reason for 4 stars instead of 5, the instructions included suck. They're essentially useless because they're generic for this company's heaters in general, which are all 220v. But here's all you need to know to install the heater:-Watch the installation video posted by the company for this model.-Before first actual use, run your heater without stones for a few minutes to burn of any left over gunk from the manufacturing process.-Use the wall distance measurements printed on the cover panel on the front of the sauna.-Don't try to wire it yourself if you don't know what you're doing.-Ensure that you're wiring or plugging into a 20 amp breaker. When in use this heater draws 18.2 amps; som