Commercial HVAC Compliance Checklist for Facility Managers: Annual Audit Guide

Running a commercial building means your HVAC systems are never truly off the compliance radar. Between EPA refrigerant rules, ASHRAE ventilation minimums, energy codes, fire and smoke damper testing, and state and local inspection requirements, the regulatory footprint for a typical facility manager spans at least five distinct frameworks — each with its own documentation demands and audit triggers.

This checklist is built as a working audit tool. Work through each section before your annual inspection, after any major equipment service, or whenever you onboard a new property. Each table row is a discrete compliance item you can assign, verify, and document. Where a frequency is a legal requirement, the table cites the rule; where it is a suggested practice, it is labeled as such. Print it, export it, or build it into your CMMS — the goal is zero surprises when an inspector walks through the door.

How to Use This Checklist

Each section below targets a specific compliance domain. For every item:

• Pass — requirement is fully met and documented
• Flag — partially met, in progress, or requires follow-up within 30 days
• Fail — out of compliance; requires immediate corrective action

Attach supporting documentation (service records, test reports, certifications) to each flagged or failed item. If your jurisdiction has adopted specific amendments to ASHRAE 62.1, ASHRAE 90.1, or local energy codes, add those line items to the relevant section.

Section 1: Refrigerant Compliance (EPA Section 608 / AIM Act)

EPA's Section 608 rules at 40 CFR Part 82, Subpart F include prohibitions on releasing refrigerant and require certified technicians, proper evacuation and recovery equipment, and — for larger appliances — leak repair and recordkeeping. The AIM Act (American Innovation and Manufacturing Act) adds an HFC phasedown and, through EPA's 2024 Emissions Reduction and Reclamation rule at 40 CFR Part 84, Subpart C, leak repair requirements for many HFC appliances.

Key thresholds: Section 608 leak repair rules at 40 CFR 82.157 apply to appliances with a full charge of 50 lbs or more of ozone-depleting (class I or class II) refrigerant. Beginning January 1, 2026, 40 CFR 84.106 applies similar leak repair requirements to many appliances with 15 lbs or more of refrigerant containing an HFC or certain HFC substitutes (residential and light commercial air conditioning and heat pumps are excluded). Under both rules, the trigger leak rates are 10% per year for comfort cooling, 20% for commercial refrigeration, and 30% for industrial process refrigeration. Leaks must be repaired within 30 days of adding refrigerant to an appliance that exceeds its threshold (120 days where an industrial process shutdown is required); under Part 82, an owner may instead develop a retrofit or retirement plan within 30 days and complete it within one year.

Section 2: Ventilation and Indoor Air Quality (ASHRAE 62.1)

ANSI/ASHRAE Standard 62.1, Ventilation and Acceptable Indoor Air Quality, sets minimum outdoor airflow rates and requirements for ventilation system design, filtration, controls, and operation. The current edition is 62.1-2025. Section 8 of the standard — Operations and Maintenance — is the section most relevant to ongoing facility compliance; OSHA points building owners and operators to it because it identifies which ventilation components should be maintained, which tasks to perform, and minimum task frequencies.

Jurisdictions often reference an earlier edition of 62.1 through their mechanical or energy code; verify which edition your AHJ (authority having jurisdiction) references. Frequencies in the table below are suggested; use the Section 8 tables in your adopted edition to set required minimums.

Section 3: Energy Efficiency Compliance (ASHRAE 90.1 / Local Energy Codes)

ANSI/ASHRAE/IES Standard 90.1, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings, governs minimum HVAC equipment efficiency, controls, and system design for commercial buildings. ASHRAE's newest edition is 90.1-2025, but states and cities adopt editions on their own schedules and often with amendments, so confirm the edition that applied when your systems were permitted. Section numbers below follow 90.1-2019 numbering.

Federal efficiency metrics for residential central air conditioners and heat pumps changed on January 1, 2023: they are now expressed as SEER2, EER2, and HSPF2, based on a new test procedure. Ensure any replacement equipment meets current federal minimum efficiency standards.

Section 4: Equipment Inspection — Mechanical Components

This section covers the physical condition and operational performance of major HVAC equipment. Regulatory citations vary by equipment type and jurisdiction. These items are consistent with a maintenance program based on ASHRAE/ACCA Standard 180 (Standard Practice for Inspection and Maintenance of Commercial Building HVAC Systems), which the International Mechanical Code references for HVAC maintenance inspections; see our guide to ASHRAE 180 maintenance programs. Frequencies shown are typical, not legal minimums, except where a rule is cited.

Section 5: Cooling Tower Compliance (Legionella / Water Treatment)

ANSI/ASHRAE Standard 188-2021, Legionellosis: Risk Management for Building Water Systems, establishes minimum Legionella risk management requirements for building water systems, and some jurisdictions have their own cooling tower laws with registration, testing, and certification requirements that go beyond the ASHRAE standard. New York City is the best-known example. See our cooling tower Legionella compliance guide for more detail.

Always verify local requirements. Under Local Law 159 of 2025 and updated NYC Health Department rules, NYC cooling towers must be sampled for Legionella monthly beginning May 8, 2026, with no more than 31 days between samples (up from at least every 90 days).

Section 6: Maintenance Records and Documentation

Regulatory compliance is only as strong as your documentation. EPA, code officials, and local health departments can request records during inspections, and a Standard 180-based program depends on records of inspections, findings, and corrective actions. Where a rule sets a retention period, it is noted below; otherwise the period shown is a suggested minimum. Keep records longer if your jurisdiction, insurer, or lease terms require it.

Annual Audit Summary Scorecard

Use this summary table at the conclusion of your audit to communicate overall compliance posture to building ownership, property management, or your compliance officer.

Key Regulatory Deadlines to Track

Not all HVAC compliance requirements operate on a fixed annual cycle. Several have specific calendar deadlines:

• November 1 (NYC): Annual cooling tower certification submission deadline
• May 8, 2026 (NYC): Monthly Legionella sampling began for NYC cooling towers (no more than 31 days between samples)
• July 1 to August 31 (NYC): Summertime hyperhalogenation window for NYC cooling towers
• January 1, 2026 (EPA): AIM Act leak repair requirements began for many HFC appliances with 15 lbs or more of refrigerant
• Energy benchmarking (varies): Reporting deadlines differ by city and state; check your local ordinance
• Ongoing (EPA): Refrigerant leak repairs within 30 days of adding refrigerant to an appliance over its threshold (120 days where an industrial process shutdown is required; Part 82 also allows a retrofit/retirement plan within 30 days, completed within one year)
• Fire and smoke dampers: Inspection and testing 1 year after acceptance, then every 4 years (every 6 years in hospitals)

Common Compliance Gaps Found During Audits

These are items that are frequently out of compliance in commercial HVAC programs:

1. Missing EPA 608 documentation — Technician certifications not on file or not current; service records incomplete
2. Refrigerant records gaps — Purchase invoices not matched to service records; leak rate calculations not performed when refrigerant is added
3. Outdoor air dampers stuck or undersized — Often discovered during TAB re-verification; the BAS shows the damper "open" but the actuator has failed
4. DCV sensors not verified — CO2 sensors that drift or fail can leave spaces over- or under-ventilated
5. Fire damper tests overdue — Easy to defer; carries significant life-safety and insurance implications
6. Water treatment logs incomplete — Cooling tower chemical logs missing dates or dosing records; Legionella test results not retained
7. Boiler certificates lapsed — State boiler inspection certificates expired; often flagged during property transactions or insurance audits

Sources and References

The following sources were used in developing and verifying this checklist:

• 40 CFR Part 82, Subpart F (Section 608 refrigerant management) — Cornell LII
• 40 CFR 82.157 Appliance maintenance and leak repair — Cornell LII
• 40 CFR 82.158 Standards for recovery and/or recycling equipment — Cornell LII
• 40 CFR 82.166 Reporting and recordkeeping requirements for leak repair — Cornell LII
• Stationary Refrigeration Leak Repair Requirements — US EPA
• AIM Act Leak Repair Requirements for Appliances Containing HFCs (Fact Sheet, January 2026) — US EPA
• ASHRAE Standards 62.1 and 62.2 — ASHRAE Bookstore
• Indoor Air Quality Building Operations and Management — OSHA
• Addendum bk to ANSI/ASHRAE/IES Standard 90.1-2019 (62.1 dew point alignment, setback controls) — ASHRAE
• ASHRAE Standard 90.1 — ASHRAE Bookstore
• ANSI/ASHRAE/IES Standard 90.1-2019: HVAC (PNNL-SA-153210) — U.S. DOE Building Energy Codes Program, hosted by Oregon BCD
• 2023 Energy Efficiency Standards (SEER2/EER2/HSPF2) — AHRI
• Fire and Smoke Damper ITM — NFPA
• ANSI/ASHRAE Standard 188-2021 — ASHRAE Bookstore
• NYC Cooling Tower Registration and Maintenance — NYC Department of Health
• NYC Cooling Towers Face New Monthly Legionella Testing Requirement in 2026 — Eurofins