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G2 / G3 GAS TECHNICIAN EXAMS ($20 USD)
(438 Multiple Choice Questions & Answers)




313D RESIDENTIAL AIR CONDITIONING SYSTEMS MECHANIC EXAM ($20 USD)
(136 Multiple Choice Questions & Answers)




PRIVATE HEAT EXCHANGER GALLERY ($20 USD)
(68 Different Models of Furnaces & Failure)




PRO TECH MEMBERSHIP ($40 USD)
(Access to G2/G3 Exams, 313D Exam, and Private Heat Exchanger Gallery)