how do you ventilate without losing all the heat?

CrazyStat · on Jan 18, 2022

Heat recovery ventilation [1] can bring in fresh air and output old air while recovering the vast majority of the heat.

[1] https://en.wikipedia.org/wiki/Heat_recovery_ventilation

voisin · on Jan 19, 2022

These are only compatible with forced air systems, correct? I.e. using in-floor radiant heat would require an entirely separate ventilation system with heat recovery?

CrazyStat · on Jan 19, 2022

Correct.

thatguy0900 · on Jan 18, 2022

https://www.energy.gov/energysaver/whole-house-ventilation

Energy recovery ventilation systems gives a good description

jhgb · on Jan 18, 2022

Recuperator ventilation, presumably?