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40 CFR Part 84 Subpart C

Education Hub

Understanding EPA refrigerant compliance requirements for systems with 15 pounds or more of refrigerant. Learn about leak rate calculations, recordkeeping, and federal regulatory compliance.

Compliance Resources

Educational articles about 40 CFR Part 84 Subpart C regulations and requirements

Software Reviews

Best Refrigerant Compliance Software for 2026

Independent comparison of refrigerant tracking platforms for Subpart C compliance. Pricing, features, and honest reviews of RefriTrak, Fexa Trakref, FMHero, Parasense, RefriComply, and more.

8 cited sourcesReferences: § 84.106
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Applicability

Does 40 CFR Part 84 Subpart C Apply to My Building?

Find out if EPA refrigerant regulations apply to your building type. Covers office buildings, retail centers, apartments, restaurants, hospitals, data centers, and more — with typical equipment charge sizes and applicability guidance.

7 cited sourcesReferences: § 84.102, § 84.106
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Legal Analysis

Tenant vs. Landlord: Who Is Liable for Refrigerant Compliance?

Analysis of who bears EPA refrigerant compliance liability under the 'owner or operator' definition. Covers NNN leases, gross leases, property managers, condos, shared equipment, and recommended lease provisions.

13 cited sourcesReferences: § 84.102, § 84.106
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Technical Guide

Automatic Leak Detection Requirements Under 40 CFR § 84.108

Complete guide to ALD system requirements under Subpart C. Covers applicability thresholds, installation deadlines, the two approved detection approaches, sensor technologies, and how ALD replaces manual inspections.

9 cited sourcesReferences: § 84.108, § 84.106
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Regulatory Guide

Retrofit vs. Retirement: When Leak Repair Is Not Enough Under Subpart C

When repair fails, owners must retrofit or retire equipment. Covers regulatory timelines, documentation requirements, the chronic leaker rule, HFC phasedown economics, and real enforcement cases.

15 cited sourcesReferences: § 84.106, § 84.102, § 84.104
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Enforcement

Who Gets Fined? Real EPA Enforcement Cases for Refrigerant Violations

Documented EPA enforcement cases and penalty amounts for refrigerant violations. Learn who bears liability — equipment owners, contractors, or technicians — and what Subpart C means for enforcement going forward.

10 cited sourcesReferences: § 84.106, 42 U.S.C. § 7675
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Owner Guide

What Building Owners Must Do Under Subpart C That Contractors Won't Do for You

Practical guide to the specific compliance duties that fall on equipment owners under 40 CFR Part 84 Subpart C. Covers leak rate calculations, recordkeeping, EPA reporting, and what to verify after every service call.

7 cited sourcesReferences: § 84.106, § 84.102
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Contract Guide

How to Write Refrigerant Compliance Into Your HVAC Service Contracts

Recommended contract clauses for HVAC service agreements based on 40 CFR Part 84 Subpart C requirements. Covers documentation delivery, certification verification, and contractor data flow.

7 cited sourcesReferences: § 84.106, § 84.102, § 84.104
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Compliance Checklist

EPA Subpart C: Complete Compliance Checklist for 2026

Step-by-step compliance checklist for 40 CFR Part 84 Subpart C regulations now in effect. Covers equipment inventory, leak rate tracking, automatic leak detection, repair procedures, and recordkeeping.

4 cited sourcesReferences: § 84.106, § 84.108
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Recordkeeping

Recordkeeping Requirements Under 40 CFR § 84.106

Complete guide to refrigerant recordkeeping requirements under Subpart C. Learn what records must be maintained, retention periods, required data elements, audit preparation, and compliance documentation obligations.

5 cited sourcesReferences: § 84.106(l)
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Legal Framework

Understanding the AIM Act and 40 CFR Part 84 Subpart C

Comprehensive guide explaining the relationship between the AIM Act and Subpart C regulations, legal responsibilities for owners vs contractors, compliance obligations, and enforcement penalties.

6 cited sourcesReferences: § 84.102, § 84.104, § 84.106
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Applicability

Understanding the 15-Pound Refrigerant Threshold

Complete guide to the 15-pound refrigerant charge threshold under 40 CFR Part 84 Subpart C. Learn which equipment types are covered, refrigerant GWP requirements, and compliance obligations.

4 cited sourcesReferences: § 84.106(a)
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Interactive Tool

Free EPA Leak Rate Calculator - Calculate Compliance Instantly

Interactive calculator to determine if your equipment meets EPA Subpart C leak rate thresholds. Choose between annualized or rolling average methods and see instant results.

3 cited sourcesReferences: § 84.106(b)
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Technical Guide

EPA Subpart C Leak Rate Calculation Guide

Complete guide to calculating leak rates under 40 CFR Part 84 Subpart C. Learn the two calculation methods (annualized vs rolling average), thresholds by equipment type, and compliance requirements.

5 cited sourcesReferences: § 84.106(b), § 84.106(c)
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Have Questions About Compliance?

This site provides educational information about EPA regulations under 40 CFR Part 84 Subpart C. For specific compliance guidance, consult the official federal regulations and qualified professionals.