I have the same problem - poor design. It was 45 degrees out side and I was driving fo over an hour but no heat. At best to was just slightly warm. Wonder what the defrost will do when it is cold outside. The 2019 is one issue after another. It now started to brake fo no reason.I just bought a 2019 CR-V in June (3rd one). When I would use the auto start, the car would automatically turn on the heat or a/c on full blast to get the car to 70 degrees. Now, when I use the auto start, it just turns the car on and that's it. I don't know if I changed something or if something is wrong with the car.