1. ANSI/ASHRAE (2007). ANSI/ASHRAE Standard 52.2. Method of testing general ventilation air-cleaning devices for removal efficiency by particle size. Atlanta, USA: American Society of Heating, Refrigerating and Air-Conditioning Engineers.
2. ASHRAE (2008). ASHRAE Handbook-HVAC Systems and Equipment, Chapters 9 and 28. Atlanta, USA: American Society of Heating, Refrigerating and Air-Conditioning Engineers.
3. Brandemuehl MJ, Gabel S, Andersen I (1993). A Toolkit for Secondary HVAC System Energy Calculation. Atlanta, USA: American Society of Heating, Refrigerating and Air-Conditioning Engineers.
4. James P, Cummings J, Sonne J, Vieira R, Klongerbo J (1997). The effect of residential equipment capacity on energy use, demand, and run-time. ASHRAE Transactions, 103(2): 297–303.
5. Nassif N (2012). Impacts of air filters on energy consumption in typical HVAC systems. Paper presented at the 2012 Annual ASHRAE Meeting, San Antonio, USA.