EPA Section 608 Compliant

R-600a (Isobutane)
Leak Rate Compliance

Everything you need to know about R-600a compliance under the AIM Act and EPA Section 608. Correct thresholds, GWP data, and instant calculations.

Global Warming Potential
3
GWP Value (AR4)
Common Application
Domestic refrigerators
Status
Regulated
AIM Act / Section 608

R-600a Leak Rate Thresholds (2026)

Equipment TypeTrigger RateAction Required
Commercial Refrigeration20%Repair within 30 days
Industrial Process30%Repair within 30 days
Comfort Cooling10%Repair within 30 days

Calculate R-600a Leak Rate

Use our EPA-compliant calculator to check your R-600a system status instantly.

Launch Calculator
20%
Limit

Related Refrigerants

R-454B
Opteon XL41
R-32
Difluoromethane
R-290
Propane

Frequently Asked Questions about R-600a

What is the leak rate limit for R-600a?
For R-600a, the current EPA thresholds are:
  • 20% for Commercial Refrigeration
  • 30% for Industrial Process Refrigeration
  • 10% for Comfort Cooling
What is the GWP of R-600a?

R-600a has a Global Warming Potential (GWP) of 3. It is a regulated substance under the AIM Act and EPA Section 608.