The key issue is that all my existing equipment is 230v. I would have to rebuy everything.
If you need an inverter anyway for hvac, you have added complexity and no gains.
Although not mentioned, I’m using 230v ikea fixtures with 12v led e27 bulbs wired to 12 volt, as you mentioned. Is indeed quite efficient, no inverter running.
Yeah, but the annoying thing (from an engineering elegance perspective) is that most of those appliances that are on 230VAC convert to 12-48VDC internally (e.g. TV/monitor, LEDs).
If you need an inverter anyway for hvac, you have added complexity and no gains. Although not mentioned, I’m using 230v ikea fixtures with 12v led e27 bulbs wired to 12 volt, as you mentioned. Is indeed quite efficient, no inverter running.