The Trade Off Between Energy Efficiency and Indoor Air Quality

There is a trade off between energy efficiency and indoor air quality. In the winter, in a place like the UK, if it's wet and windy, certainly the best way to improve air quality is simply to open the window,. But that might not be the best advice in the middle of summer when things like photochemical ozone begin to accumulate. And finally, it might actually be different depending on where your house or your school or your business is. Those in rural environments generally can use outdoor air to clean up. Those that are right by busy roads might have to take different approaches.