{"product_id":"refrigerant-charging-and-air-conditioning-jonathan-r-clifford-9798195680268","title":"Refrigerant Charging and Air Conditioning Service: A Professional Reference Covering EPA 608, Leak Detection, \u0026 Evacuation Procedures for Apprentice T","description":"You connected the gauges, the pressures looked wrong, and you added refrigerant - and two weeks later the customer called back with the same complaint. \u003cp\u003e\u003c\/p\u003eThat is what happens when a technician learns the steps without understanding the system, and every wrong diagnosis after that moment costs time, refrigerant, credibility, and compressor life. \u003cp\u003e\u003c\/p\u003eThis book teaches you to read what the system is telling you - pressures, temperatures, superheat, subcooling - and act on that data with the precision the work actually demands. \u003cp\u003e\u003c\/p\u003e\u003cb\u003eInside, you will find: \u003c\/b\u003e \u003cp\u003e\u003c\/p\u003e\u003cb\u003e- The vapor-compression cycle explained from the refrigerant's perspective\u003c\/b\u003e - so every gauge reading connects to a physical condition you can see, measure, and correct\u003cbr\u003e\u003cb\u003e- EPA 608 legal requirements in full field detail\u003c\/b\u003e - venting prohibitions, purchase restrictions, recovery levels, record-keeping obligations, and what non-compliance actually costs\u003cbr\u003e\u003cb\u003e- Evacuation procedure built on micron-level thinking\u003c\/b\u003e - deep vacuum method, hold test interpretation, and the moisture-versus-leakage distinction that determines whether a system is ready to charge\u003cbr\u003e\u003cb\u003e- Three charging methods with the judgment to choose between them\u003c\/b\u003e - weight, superheat, and subcooling applied to the right system under the right conditions\u003cbr\u003e\u003cb\u003e- Airflow verification as a pre-charge requirement\u003c\/b\u003e - because low airflow and undercharge produce identical gauge signatures and only one of them needs refrigerant\u003cbr\u003e\u003cb\u003e- A2L refrigerant service from cylinder identification through recovery\u003c\/b\u003e - R-454B and R-32 procedures, left-hand thread fittings, detection system response, and the mixing prohibition that cannot be undone\u003cbr\u003e\u003cb\u003e- Systematic refrigerant diagnosis\u003c\/b\u003e - six distinct problem signatures with the pressure-temperature patterns that distinguish each one before a single ounce moves \u003cp\u003e\u003c\/p\u003eThis book is for HVAC apprentices, trade school students, first- and second-year technicians, and vocational instructors who want field procedure grounded in technical reasoning.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Jonathan R. Clifford\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9798195680268\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Independently Published\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 05\/05\/2026\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 236\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 1.23lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 11.00h x 8.50w x 0.50d","brand":"Jonathan R. Clifford","offers":[{"title":"Paperback","offer_id":48659867304191,"sku":"9798195680268","price":80.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.whiterainbookhouse.com\/products\/refrigerant-charging-and-air-conditioning-jonathan-r-clifford-9798195680268","provider":"WR Book House","version":"1.0","type":"link"}