Who It's For: Restoration professionals, property managers, and landlords dealing with smoke-damaged spaces
Who Should Choose the HM450: The HealthMate Plus is the better choice for those with chemical sensitivities, households dealing with persistent cigarette smoke, or anyone in a region where wildfire smoke seasons are prolonged
To decrease the concentration, you need to increase the distance between the smoke particles by by letting in fresh air
My tested units: Ozone-Free: IQAir, Austin Air, LEVOIT, Alen Flex Optional Ionizer (Can Be Disabled): WINIX 5510 (PlasmaWave) My advice: If you or anyone in your household has asthma, COPD, or young children with developing lungs, choose a purely mechanical filtration system with no ionizer