{ "item_title" : "Heat Pumps Field Guide", "item_author" : [" Jd R. Lawson "], "item_description" : "Master the 2026 A2L Transition and Become the Go-To Technician for Modern Heat Pump Troubleshooting.The HVAC industry is facing its biggest shift in decades. Heat pumps are outselling gas furnaces, A2L refrigerants are mandatory, and cold-climate technology is now mainstream. Yet, 50% of the experienced workforce is retiring, taking their institutional knowledge with them.Heat Pumps Field Guide is the fifth book in JD's HVAC Professional Series, specifically engineered for the journeyman technician who wants to win the next decade of their career.Why This is a Must-Read for Every 2026 HVAC Pro:HIGH-IMPACT DIAGNOSTICS: Stop guessing. Master the diagnostic logic for variable-speed inverters, reversing valve internal leaks, and defrost cycle failures.A2L REFRIGERANT MANUAL: Stay compliant and safe. This guide covers the specific spark-resistant tools and handling rules for R-454B and R-32.COLD CLIMATE DOMINANCE: Learn why heat pumps don't work in the cold is a statement about 2010 technology. Master EVI technology and Manual J sizing for systems that thrive in Minnesota winters.REVENUE & SALES MASTERCLASS: Use the Inflation Reduction Act (IRA) tax credits and utility rebates as a competitive edge to close $18,000 jobs while others are stuck quoting basic equipment.Inside, You'll Get Field Deliverables in Every Chapter:24-Point Commissioning Checklist to protect your warranty.Defrost Diagnostic Flowchart to isolate failures in 20 minutes.A2L Transition Checklist for legal and safety compliance.Charge Verification Decision Tree for heating mode accuracy.About the Author: JD R. Lawson is a Licensed Mechanical Engineer and field educator who writes for the tech standing in the driveway at midnight. His guides are used by technicians across the globe to rebuild their diagnostic frameworks for the modern era of HVAC.Don't let the 2026 transition cost you another callback or a lost sale. Scroll up and grab your copy of the Heat Pumps Field Guide today.", "item_img_path" : "https://covers2.booksamillion.com/covers/bam/9/79/819/577/9798195776985_b.jpg", "price_data" : { "retail_price" : "19.98", "online_price" : "19.98", "our_price" : "19.98", "club_price" : "19.98", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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