John Tomczyk
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Troubleshooting and Servicing Modern Air Conditioning and Refrigeration Systems
John Tomczyk
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Refrigeration & Air Conditioning Technology, Fourth Edition
Whitman, Bill; Johnson, Bill; Tomczyk, John
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Refrigeration and Air Conditioning Technology
Whitman, Bill; Johnson, Bill; Tomczyck, John
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The HVAC/R Professional's Field Guide to Universal R-410a Safety & Training: Delta-T Solutions (This is a safety and training guide, the cylinder is NOT included)
John Tomczyk; Joe Nott; Dick Shaw
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System Diagnostics and Troubleshooting Procedures
John Tomczyk
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Basic Refrigeration & Charging Procedures
John Tomczyk
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Refrigerant Transition & Recovery Certification Program Manual for Technicians (Delmar's Test Preparation Series)
Delta T. Solutions
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