HVAC EPA Regulations and Refrigerant Safety

Question 1

Under EPA Section 608, technicians who purchase or handle refrigerants in HVAC/R systems must be what?

Accepted Answer

Certified under EPA Section 608

Answer

EPA Section 608 of the Clean Air Act requires that technicians who service, maintain, repair, or dispose of appliances containing regulated refrigerants be certified.

Question 2

What does it mean for a refrigerant to have a high Global Warming Potential (GWP)?

Accepted Answer

Releasing it into the atmosphere contributes significantly more to climate change than an equivalent mass of CO2

Answer

GWP measures how much heat a greenhouse gas traps compared to CO2 over 100 years; a high-GWP refrigerant like R-410A (GWP=2088) has a much greater climate impact per pound released than CO2.

Question 3

What is the primary reason R-22 (HCFC) refrigerant is being phased out under the Montreal Protocol and US Clean Air Act?

Accepted Answer

It contains chlorine that destroys stratospheric ozone when released

Answer

R-22 is an HCFC (hydrochlorofluorocarbon) that releases chlorine atoms when it breaks down in the stratosphere, catalytically destroying ozone molecules.

Question 4

Under EPA Section 608, what is required when removing refrigerant from an HVAC system?

Accepted Answer

Refrigerant must be recovered into an approved recovery cylinder using certified recovery equipment

Answer

EPA Section 608 prohibits venting refrigerants and requires technicians to use certified recovery equipment to capture refrigerant into approved DOT cylinders before opening any system.

Question 5

What is the ASHRAE refrigerant safety classification system based on?

Accepted Answer

Toxicity (A=lower, B=higher) and flammability (1=no flame, 2=lower, 3=higher) classes

Answer

ASHRAE's refrigerant classification uses a two-character system: a letter for toxicity (A=lower, B=higher) and a number for flammability (1=none, 2L=lower, 2=higher, 3=highest).

HVAC - Heating, Ventilation, and Air Conditioning Practice Test

HVAC - Heating, Ventilation, and Air Conditioning Practice Test

HVAC EPA Regulations and Refrigerant Safety