Re: Why only one thermostat?
Steve Wright (the one from when the US had comedians) liked to put his humidifier and de-humidfier in the same room and let them fight it out.
I'm trying to get a reliable sliding door opener so the heat from the conservatory can be let into the house to warm it up - but not now - it was 140f in there when I got my fat arse out of bed.