Mechanical ventilation with heat recovery (MVHR) is the quiet achiever of ventilation. Continuous fresh air…

Mechanical ventilation with heat recovery (MVHR) is the quiet achiever of ventilation. Continuous fresh air from outside without losing thermal comfort inside. Should be in schools and other superspreading sites. Super cheap to run too. h/t @DrPieterPeach https://t.co/OYYyWR6Dzw