I just replaced a (rubbish) Goldair Platinum heater with a much better Dimplex heater - both from Mitre10. This is in our nursery. Working so much better so far, and mounts on the wall and one of the selling features is that it doesn't get dangerously hot for kids. We also got the wireless hub and controller so we can control it from smartphone, and set schedules that can be very granular. It is actually a reasonably done IoT implementation; with full API documentation and it doesn't need internet access to work over LAN (unlike many cheap options which everything goes through the owners servers).