' ** ' indicates Besides Effectiveness, Major Difference to Biozone's (also see other comparisons)

MFG & Model	Purifying Type/Methods	Max Coverage Area (Foot2)	Current Unit Price	Unit Price per Foot2	Daily Electricity Cost	Yearly Parts Cost	Yearly Total Cost / Foot2
Biozone PureHome 3000	Biozone UV_Plasma & Purifying_Agents	3000	$399.95	$0.13	$0.04	$40	$0.15
Airsource 3000	UV Photohydro- Ionization (*see Methods Comparison)	3000	** $599 membership	$0.20	$0.05? or higher	** $69 membership	** $0.25
A 'Big' Brand in the Market	** Discharge Ozone & Ions (see Comparison)	3000	** $549	$0.22	$0.06	$30	$0.23
Sharper Image Ionic Breeze Quadra	Electrostatic/Ion (with optioinal standard UV) (*see Methods Comparison)	** 500	** $349($175 re-conditioned)	$0.70	$0.05	$29.95	** $0.79
Jenn-Aire/ Clearveil	Ionization (*see Methods Comparison)	** 500	$299	$0.60	$0.16	$35	** $0.78
Honeywell H63500	Filter (*see Methods Comparison)	** 440	$250	$0.57	$0.46	** $94	** $1.16
Austin Air Sierra	Filter	** 1500	$395	$0.26	$0.25	$30	$0.34

* Data may vary slightly upon sources and local utility rates.