Whilst effective at blasting heat into the space it was often a case of being too cold or overwhelmingly hot.

The thermostats on the newer ones are supposed to be better at regulating temperature.

I also couldn’t use it at night as the pump was disgustingly loud.

Yeah. Last winter a dude pulled up next to me on BLM land and cranked the heater. Sounded like a jet engine all night. I put in earplugs.