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DEWALT HVAC Technician Certification Exam Guide (Dewalt Exam/Certification Series)
from DEWALT
Customer Review:
I used this book as part of a review for 9 techs who took both the Heat Pump and Gas Heating exams. ALL said the same thing: "Sample questions in this book are not an indication of the exam questions, not even close."
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Customer Rating:
3.0 / 5.0
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