I cannot yet comment on the actual unit because it hasn't been installed yet. Probably tomorrow or early next week. Our bathroom is freezing and never comfortable. What I can comment on is my purchasing and shipping experience. I had somewhat of a difficulty navigating the website because I didn't know exactly what to call a unit that heats a floor from underneath the actual tile
I found it once and it took my 2 two days to fond it again. Once ordered the unit did arrive in a timely manner and is undamaged, so once our new bathroom is finished I will definitely let everyone know how it worked out. The units range from $140 to $3,000. I paid$200. I hope it works out.

I love being able to program the flooring to turn one before we get in the shower and have warm feet. The panel is a little confusing to use and program but once you figure it out it works very nice. Easy to install.

I looked at a lot of floor heating systems and this was the best value by far. I installed the whole thing myself and I'm not an experienced electrician or remodeler. I laid it on cement board and then poured self-leveling floor compound to protect the wire before I laid tile. Couple of hints...when laying down the mat, especially if you've had to cut it to place the wire in an odd shaped room, then hot glue or staple the mat (ONLY the mat, not the wire!!) to the floor. Otherwise the mat wants to float up in the flooring compound. Use a deep electrical box for the thermostat, you'll need the room. Or, if installing in new construction, use the type of box that has more space to the side, eventually covered by drywall, with a snap-off cover, for your wiring because backside of the thermostat along with the wiring takes up quite a bit of room. The temperature sensor wire doesn't run into the box with the rest of the wiring (it was my first time installing a thermostat so I didn't realize that til I got to that page of the directions, lol, so I had to remove the box from the wall and pull out the temp sensor wire.) I buried the cold lead in mortar till it reaches the conduit in the wall, then it runs in conduit up to the box. You'll also need a 20 amp circuit with a GFCI breaker. I tested it last night to make sure it's working, before I begin laying tile, and it's working fine. Very pleased!

I purchased two of these warming mats about a year ago and installed them in January of 2012. It is recommended that a curing period of 1 month be observed for the thin set to dry completely so I did not get to use them much last year as we had a warm spring. As mentioned I bought two mats and did two bathrooms. I felt like I was taking a bit of a risk with no reviews on this product and limited information but they were cheaper than I could find the mat and thermostat anywhere else. The math may have changed by now but these were a bargain and I see the price remains the same now (nov-2012) as when I purchased them. I did do a lot of research before going this route and came to the conclusion that the real value in these kits is in the controller and in this case this is an absolutely great controller/thermostat. It is easy enough to set up and offers all the programmable options I wanted. Aube is a high quality brand even if they are not as well known in the mainstream as some others. I went with the mats because they worked well for my bathrooms but depending on design I would not hesitate to use the cable. The mat was well made and relatively easy to install. This was my 5-6 tile job and it does add a little difficulty to the job but nothing an experienced DIY'er can't handle. The biggest concern is getting the tile with the mat under it to sit at the same height as the tile without mat under it. I used thin set to set mine on top of backer board and just was conscious to use more thin set (different trowel) on the tiles without mat under it and it turned out fine. The other option is to use self leveling compound but that would have added more height to the floor and I wanted perfect transitions to the surrounding floors. I am capable of doing the electrical and did so but if you are not familiar with household wiring, GFCI's etc I would recommend this part be farmed out to someone who can. Just follow the directions locate the temperature sensor correctly and be careful of the wire as you work and you should be fine.

This year I have been using them more and more as we get into the winter months and boy do I love these. They start giving noticeable heat to your feet in 15-30 minutes but should be left on for about an hour to get the full effect. I do not try to use them to warm the room so can't comment on that. With the controller it makes it easy to have the floor all warmed up for a morning shower without having to do a thing.

To summarize:

Great product, relatively simple install, awesome controller, mat works well to aid install, and the end result is simply fantastic. My bathrooms were always a little cool and getting out of the shower onto a warm floor while I shave or whatever is just great. There are a lot of options when it comes to a floor warming system but for my money I think Warming systems Inc had the best value I could find and a great product.

I will be doing 4-5 more bathrooms this winter for family/friends and will be using this product again where a warm floor is wanted.

Every morning I go into my new bathroom I think: "NICE"! And it is indeed! This is also a very good value - you get the mat, the sensor, and the thermostat.

I installed this mat in my basement bathroom directly on the cement slab. Before installation measure the resistance and make sure it is within the range specified on the wire tag. Also, measure the sensor resistance and also make sure it is working properly. I installed one extra sensor Honeywell AC112-01 Electric Heat Floor Sensor just in case the first one dies out (imagine installing everything and having no heat because of a busted sensor).

It is fairly easy to lay it down, and to cut the netting (not the red wire!) and arrange on the floor. However, the wire tends to lift at every corner when changing the direction. If you have wood subfloor you can staple the net, but in my case I was able to make it stay flat brushing it under and then over with the primer for the self-leveling concrete (my floor was very uneven). I put about 1/2" of self-leveling over, then I placed the sensor under the tile (not with the mat) as I wanted the temperature reading to be more realistic. It takes less than 30 minutes to get from 68F to 76F.

They specify that you need conduit, so I had some old 12/3 wire with metallic jacket, I pulled the wires out and used the conduit from the floor (through the stud) to the connection box. From the connection box to the thermostat I used regular 14/2 wire (this thing is drawing 3A, uses 360Watt and it requires a GFCI breaker).

The thermostat is not the best - you can program 4 different time periods per day but only 2 temperature setting (?!?!). Night time, with day time share the same temperature, as do morning and evening (you can use only 2 periods if needed: day and night). What if I am home the whole day and want some heat but not as low as during the night? What if I want a different temperature in the evening vs the morning? Tough luck. Well, this is the thermostat issue, not a heat mat issue, so I don't want to deduct any stars here even though I feel compelled to...

I have it at 76 in the morning and evening, and I have an infrared thermometer and it is spot on. The thermostat cycles on and off pretty quietly, and not too often.

I purchased the 30ft mat, but in all honesty the 20ft one would have been enough (only 240 watt). They mention that you should not install the mat too close to the wall or under fixtures anyway. When making the decision which one to get, think where your feet are touching the floor, and where would you actually appreciate the heat. For me it's too late to change now...

All in all I am very happy with it. Would I purchase it again? Definitely. But If I had just a tad more money, I would look into the Ditra Heat. Just saying...