3 ms·

Agree, switching on and off is the worst way of heating. If you look into ISO 7730, then a lot of comfort comes from non cold walls: https://de.wikipedia.org/wi

Agree, switching on and off is the worst way of heating. If you look into ISO 7730, then a lot of comfort comes from non cold walls: https://de.wikipedia.org/wiki/ISO_7730 https://de.wikipedia.org/wiki/ISO_7730 This means that in a reasonable insulated home, your best bet for comfort is to just keep the temperature constant and low like 20°C. This also allows you to lower your water temperatures which improves efficiency of your heat pump or boiler.

static_motion 1y ago
Depending on the region, "reasonably insulated home" really is the factor that makes this not so viable for a lot of people. In my Mediterranean-adjacent climate country, most homes are just not well insulated at all, and having heat running 24/7 during winter is extremely costly and inefficient even if the heating is on a low setting.
- looofooo0 1y ago
  These home will most likely have a split air con, which will be the most efficient way of heating them. Also there is so much other room for improvement like drafty windows and doors etc.
  - walrus01 1y ago
    In many warmer climates, the mini split air conditioners sold are cooling capability only. This is much cheaper to purchase for a 12,000 up to 24,000 btu/h unit than one which is also capable of heating the interior.
    - looofooo0 1y ago
      Not true, I can buy a Chinese 4kw Model for 650€ which can heat till -15degree. Doubt that you can save much.
      - walrus01 1y ago
        Go price air conditioners in the uae or Kuwait or similar, the cooling only models are very much a thing that exists on the market.
        looofooo0 1y ago
        But not in Europe. It is only one 4 way valve extra to enable heating.
Syzygies 1y ago
Yes! I used to divide my time between a concrete hulk of a NYC apartment building, and a California home insulated to notoriously poor California standards. I was plenty warm in New York winters just from my neighbors' heat nearly all of the time. In California, there was a narrow window (think "Apollo 13 re-entry") between too cold and too warm. Then we modernized ceiling fans, and I hit on running them in "winter mode" drawing hot air up to flow back down the walls. Bingo! I love that ISO 7730 confirms this.

static_motion 1y ago

Depending on the region, "reasonably insulated home" really is the factor that makes this not so viable for a lot of people. In my Mediterranean-adjacent climate country, most homes are just not well insulated at all, and having heat running 24/7 during winter is extremely costly and inefficient even if the heating is on a low setting.

looofooo0 1y ago
These home will most likely have a split air con, which will be the most efficient way of heating them. Also there is so much other room for improvement like drafty windows and doors etc.
- walrus01 1y ago
  In many warmer climates, the mini split air conditioners sold are cooling capability only. This is much cheaper to purchase for a 12,000 up to 24,000 btu/h unit than one which is also capable of heating the interior.
  - looofooo0 1y ago
    Not true, I can buy a Chinese 4kw Model for 650€ which can heat till -15degree. Doubt that you can save much.
    - walrus01 1y ago
      Go price air conditioners in the uae or Kuwait or similar, the cooling only models are very much a thing that exists on the market.
      - looofooo0 1y ago
        But not in Europe. It is only one 4 way valve extra to enable heating.

Syzygies 1y ago

Yes! I used to divide my time between a concrete hulk of a NYC apartment building, and a California home insulated to notoriously poor California standards. I was plenty warm in New York winters just from my neighbors' heat nearly all of the time. In California, there was a narrow window (think "Apollo 13 re-entry") between too cold and too warm. Then we modernized ceiling fans, and I hit on running them in "winter mode" drawing hot air up to flow back down the walls. Bingo! I love that ISO 7730 confirms this.