It makes a lot of sense to feed your ventilation output to a heatpump input for energy recovery with an air-source heatpump. But otherwise I think there is a l

It makes a lot of sense to feed your ventilation output to a heatpump input for energy recovery with an air-source heatpump. But otherwise I think there is a lot of value in other forms of heating. Specifically in radiative heating. Floor heating is great for that, but other water-based systems are also possible.