B450

I second this--anything but true laboratory testing is going to be unreliable. But to answer your question--any heavy carbon purifier with potassium iodide or potassium permanganate creates a chemical reaction which converts formaldehyde to other chemicals, which are harmless (to most people) or are

The issue with units from IQAir and Austin is that the amount of carbon makes it so they are pretty underpowered and you’d need multiple units to clean a space efficiently. This review from House Fresh does a good job of explaining. You’d need like three of them for 700 sq ft. I don’t know what you

AirFanta 3Pro has a continuous speed knob control that comes on when the power does. The Clean Air Kits Luggable XL has a single speed fan, but it will also come on with the electricity. I would consider getting the adjustable power supply recommended by North Box Systems so you can adjust the speed