CSLB C-20 HVAC ContractorCooling and RefrigerationHard
A technician recovers used refrigerant from a repair job and wants to sell it to another company for reuse in a different owner's system. Per EPA regulations, this refrigerant must first be processed by a certified reclaimer to meet the purity standards defined in:
- AUL Standard 484
- BASHRAE Standard 15
- CAHRI Standard 700
- DASHRAE Standard 34
Show answer & explanationAnswer & explanation
Correct answer: C. AHRI Standard 700
Under EPA regulations, refrigerant that changes ownership (sold to another company/customer) must be reclaimed by an EPA-certified reclaimer and meet the purity specifications in AHRI Standard 700, which sets allowable limits for moisture, acidity, non-condensables, and other contaminants.
Why the other options are wrong
- A. UL Standard 484 addresses room air conditioner safety, unrelated to refrigerant purity.
- B. ASHRAE Standard 15 covers safety requirements for refrigeration system design, not refrigerant purity.
- D. ASHRAE Standard 34 classifies refrigerant safety groups (toxicity/flammability), not purity.
AHRI Standard 700 (Reclaim Purity)
The industry standard specifying chemical purity requirements that recovered refrigerant must meet before being reclaimed and resold for reuse in another owner's system.
- Reclaimed refrigerant must be processed by an EPA-certified reclaimer
- AHRI 700 sets limits on moisture, acidity, high-boiling residue, and non-condensables
- Recycled refrigerant (not reclaimed) can only be reused by the same owner without meeting AHRI 700
Memory trick: To sell it clean, hit the AHRI 700 scene.