Heat recovery ventilation
An airtight house is efficient in climate extremes because you are keeping your warm or cool air where you want it: inside with you. But high levels of airtightness can reduce air quality. This problem can be managed with a heat recovery ventilation system.
When do you need such a system, and when is it not worth your while? Jenny explains what heat recovery ventilation systems are, and when they should be used, in the May 2019 issue of Sanctuary magazine.
You can read the article here.