Allergy season is knocking! A BPE ERV (such as the BPE-XE-MIR-1000} will rid your space of allergens that sneak indoors. In addition, of course, to providing clean air and saving energy. lnkd.in/euKtFfK4 #allergyseason #allergies #springallergies #HVAC #indoorventilation

Mildly surprised to see CO2 rise in this big NTU auditorium. Only panelists are speaking and far down on stage. (Giant spike to left is MRT Brown Line during morning commute, for comparison.) #IndoorAirQuality #IndoorVentilation