In an air-conditioned house equipped with an air extractor that removes for instance wet, smelly, etc. air from the bathrooms and kitchen, what are sensible cost-effective systems to prevent:
- Heat loss during the winter by bringing in cold air and extracting hot air from inside the house
- Heat gain during the summer by bringing in hot air and removing the chilled air inside
That is, I would like to minimize the energy cost of extracting chilled/heated air by somehow recycling that energy before the air is dumped outside.