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• lucb1e 7y ago
  Yeah so I'm of two minds about this: I want fresh air, and I don't want to waste energy (not for the money but for climate reasons) by opening a window all day and trying to heat up 0-10°C outside air to a temperature that is comfortable when all you do is sitting still (22°C). I guess the main heat retention is in the objects and not so much the hot air, so the strategy would be to vent through and replace the air in as short as possible a time every few hours?
  • sp332 7y ago
    A long-term solution is to install a ventilator with a heat exchanger. Outgoing air on one side of a thin metal plate warms up incoming air on the other side. This covers about 50% of the temperature difference for free.
    • lucb1e 7y ago
      I didn't know that was a thing. It looks like most are 250 euros or even double that. It's a fan with a metal plate right?! Or is there some built in fridge-like construction to exchange the heat? There is also one result for 50 euros (1.7/5 star average) but alongside the 250-500 euro results that doesn't seem like it'll be the same thing.
  • turtlebits 7y ago
    You want an ERV or HRV - many new "air tight" houses use them, they have a ceramic core which mixes interior and exterior air to bridge the temperature gap. (and humidity in the case of an ERV)