I just installed Reiff Heater on my 912 for the cold months coming up.
This is my second KF7 with a 912 I had the same heater on my previous
aircraft and I purchased the remote unit to activate it as well. I live in Oregon and went with the 150 wt unit and worked well for my conditions. I had to mount an external antenna on the hangar for reception and no problems. The antenna was only 25.00. Any questions feel free to contact me.