HVAC EPA Regulations and Refrigerant Safety 2 — Questions and Answers
Question 1: What type of cylinder must be used when recovering refrigerant under EPA Section 608?
- Any pressure vessel rated above 150 PSI
- A DOT-approved recovery cylinder that is properly color-coded and not filled above 80% capacity (Correct answer)
- The original manufacturer's refrigerant cylinder
- A stainless steel vacuum tank
Correct answer: A DOT-approved recovery cylinder that is properly color-coded and not filled above 80% capacity
Recovered refrigerant must be stored in DOT-approved recovery cylinders (gray with yellow collar) and must not be filled above 80% of their capacity to allow for liquid expansion.
Question 2: Under EPA Section 608, what are the required evacuation levels for systems with more than 200 lbs of refrigerant using high-efficiency recovery equipment?
- 0 inches Hg vacuum
- 4 inches Hg vacuum
- 15 inches Hg vacuum (Correct answer)
- 29.9 inches Hg vacuum
Correct answer: 15 inches Hg vacuum
EPA Section 608 requires systems with more than 200 lbs of refrigerant to be evacuated to 15 inches Hg vacuum when using recovery equipment manufactured after November 15, 1993.
Question 3: What does the AIM Act of 2020 regulate in the US HVAC industry?
- Air distribution and indoor air quality standards for HVAC systems
- The phasedown of HFC refrigerants based on their GWP values (Correct answer)
- Minimum energy efficiency standards for new HVAC equipment
- Technician certification requirements for EPA Section 608
Correct answer: The phasedown of HFC refrigerants based on their GWP values
The AIM (American Innovation and Manufacturing) Act of 2020 authorizes the EPA to phase down the production and consumption of HFC refrigerants by 85% over 15 years.
Question 4: What is the color code for a virgin (new) R-410A refrigerant cylinder?
- Green
- Orange
- Pink (Correct answer)
- Light blue (sky blue)
Correct answer: Pink
New virgin R-410A refrigerant cylinders are identified by their pink/rose color, which is the standard ARI color code for this refrigerant.
Question 5: What is required before refrigerant can be legally sold to a purchaser in the US?
- Purchaser must have a business license in HVAC services
- Purchaser must be EPA Section 608 certified (Correct answer)
- Purchaser must sign a liability waiver
- No certification is required for purchase of any refrigerant
Correct answer: Purchaser must be EPA Section 608 certified
As of January 1, 2018, EPA rules require that anyone who purchases refrigerant (except small cans under 2 lbs for self-contained systems) must be certified under EPA Section 608.
Question 6: What is the purpose of leak detection requirements under EPA Section 608 for large commercial systems?
- To comply with local building permits for commercial HVAC
- To limit refrigerant losses that harm the environment and require facilities to repair leaks above threshold rates (Correct answer)
- To maintain system efficiency and reduce energy costs only
- To ensure refrigerant purity in systems serving food storage
Correct answer: To limit refrigerant losses that harm the environment and require facilities to repair leaks above threshold rates
EPA Section 608 requires owners of systems with 50+ lbs of refrigerant to monitor for leaks and repair within 30 days if annual leak rates exceed 30% (industrial) or 20% (commercial/comfort cooling).
HVAC EPA Regulations and Refrigerant Safety 2
What type of cylinder must be used when recovering refrigerant under EPA Section 608?