Electricity: Principals and Applications 5th edition by Richard J. Fowler	HVAC: Heating, Ventilating, and Air Conditioning TEXT BOOK 3rd edition by S. Don Swenson
HVAC: Heating, Ventilating, and Air Conditioning WORKBOOK 3rd edition by S. Don Swenson	Electrical Wiring Residential: TEXT BOOK by Ray C. Mullin
American Electricians Handbook: REFERENCE BOOK by Croft, Summers, Hartwell	Electrician's Exam Preparation Guide : STUDY BOOK by Brickner, Traister