A refrigerant release on a commercial job raises two separate questions, and it is worth keeping them apart. One is what EPA requires of you, which is written down and reasonably clear. The other is whether your insurance responds, which is not.
The honest answer on coverage is that it depends on the form and the jurisdiction, and that the question of whether refrigerant is a pollutant at all has not been settled. That is not a dodge. It is the actual state of things, and planning around it is more useful than pretending otherwise.
The pollution exclusion is not what most people think it is
The provision in the ISO commercial general liability form is exclusion f. It runs several hundred words, and two things about its construction matter.
First, the word pollution does not appear in the operative language, and it is not defined. The exclusion addresses bodily injury and property damage arising out of the release of a pollutant. Whether you caused environmental harm in any ordinary sense is not what the text asks.
Second, it is organized by location, and the exceptions differ by subsection. Releases at premises you own, occupy or rent are handled one way, with exceptions including bodily injury sustained within a building and caused by smoke, fumes, vapor or soot produced by or originating from equipment used to heat, cool or dehumidify the building, or equipment used to heat water for personal use. That exception covers cooling and dehumidifying equipment as well as heating, which is worth knowing for a mechanical contractor.
Waste is handled separately, with no exceptions.
The subsection that most often reaches an HVAC contractor covers releases at premises of others where you or your contractors are performing operations, and it applies where the pollutants were brought to the site in connection with those operations. Refrigerant you brought to a rooftop generally fits that description. This subsection does carry exceptions, including one for fluids escaping from mobile equipment parts designed to hold them, and an operations-within-a-building exception covering fumes, gases or vapors from materials brought into a building where the injury is sustained within that building.
A final clause operates independently of all of it. It bars loss, cost or expense arising out of any request, demand, order or statutory or regulatory requirement that any insured or others test for, monitor, clean up, remove, contain or treat pollutants, and separately bars claims or suits by or on behalf of a governmental authority for damages from those activities. Read it carefully: the first limb is not limited to government. A private owner’s cleanup demand can fall inside it. A give-back added in later editions preserves liability for property damage the insured would have had in the absence of such a demand.
The structure is the point. This is not one rule. Subsection f.(1) runs through five lettered subparagraphs with different exceptions, and which one you are in changes the answer. Hostile fire exceptions appear in several of them.
Whether refrigerant is a pollutant has not been settled
This is the part worth being plain about.
IRMI’s published commentary on the exclusion compiles substances courts have held to be pollutants, including ammonia, asbestos, benzene, carbon dioxide, carbon monoxide, chemical fumes, gasoline, lead paint, PCB and TCE. The same commentary lists substances treated as pollutants that nobody would intuitively describe that way, including dust, foundry sand, manure, salt water, sewage and skunk spray. Refrigerant appears on neither list, and we did not find a reported decision squarely deciding whether refrigerant is a pollutant under an absolute or total pollution exclusion. The closest analogue is ammonia, which has been held excluded.
There are decisions applying the exclusion broadly against contractors on related facts. In Cook v. Evanson, 83 Wn. App. 149 (1996), a Washington appellate court applied the exclusion where sealant fumes were drawn into an unsealed fresh air intake, and held the exclusion makes no exception for pollutants used in the insured’s own business operations. That reasoning, if followed, would reach a contractor’s working materials generally.
There is also a broader jurisdictional split on how far the exclusion extends generally, with some states reading absolute and total pollution exclusions narrowly and others applying them as written. We have seen secondary commentary describing Oregon’s position in a 1996 decision, and because Oregon is our home state we are not going to characterize that holding here without having read the opinion itself. If this question is live for your business, it is worth getting a real answer rather than a summary of a summary.
What that means practically: treat the coverage question as open until someone reads your policy and your state’s law, and do not let anyone tell you a refrigerant release is simply covered or simply excluded.
Contractors pollution liability, and why the terms matter more than usual
Contractors pollution liability is the separate product that responds to pollution conditions arising out of covered contracting operations. It approaches the problem differently than general liability does, and for a mechanical contractor with rooftop service contracts it is often the more direct answer.
The thing to understand is that it is not standardized. There is no ISO form for it in the way there is for general liability. Carriers write their own, customize by endorsement, and define the key terms differently. Two policies both called contractors pollution liability can behave quite differently on the same facts.
The differences worth asking about are the trigger, because it is written on both occurrence and claims-made bases depending on the market, the definition of a pollution condition, whether mold and bacteria are included, whether non-owned disposal site coverage is there, and whether emergency response costs are covered.
None of that is visible on a certificate. It is in the form. Our overview of contractors pollution liability was written for restoration work, and the mechanics carry over.
The EPA side, which does not care what your policy says
Separate obligation, separate consequences.
Under 40 CFR 82.154, no person maintaining, servicing, repairing or disposing of an appliance or industrial process refrigeration may knowingly vent or otherwise release refrigerant into the environment. There is a narrow exception for de minimis releases during good faith recovery attempts, available only where the required practices are observed, and knowingly releasing recovered refrigerant is itself a violation. The section also lists exempt substitutes and end uses, including ammonia in commercial or industrial process refrigeration and certain hydrocarbons in listed applications, so the prohibition is not uniform across every substance you might handle.
The leak repair rules at 40 CFR 82.157 are narrower than many contractors assume, and they are written as duties of the appliance owner or operator rather than of the servicing contractor. Your own obligations sit elsewhere: the service practices and certified recovery equipment required by 82.154, and the service documentation required under 82.157. As of April 10, 2020, the leak repair rules apply to appliances with a full charge of 50 or more pounds of a class I or class II refrigerant or a blend containing one. They do not apply to appliances containing solely substitute refrigerants. Where they do apply, the leak rate thresholds are 20 percent for commercial refrigeration, 30 percent for industrial process refrigeration, and 10 percent for comfort cooling and other covered appliances. Repairs are generally due within 30 days, extended to 120 days where an industrial process shutdown is required, with verification testing, and appliances leaking 125 percent or more of their full charge in a calendar year must be reported to EPA.
Technician certification requirements sit at 40 CFR 82.161. Records are generally kept three years.
Why this belongs in an insurance article: documentation of compliance is what you will want if a release becomes a claim, and gaps in it tend to show up at exactly the wrong moment.
What to check before you need the answer
Read your general liability form, not the certificate, and find exclusion f. Note which subsections have exceptions and whether any limited pollution give-back endorsement is attached. If one is, read its terms rather than assuming it works the way a give-back you saw elsewhere worked.
Ask whether contractors pollution liability belongs on the program given your actual work mix, and if you already carry it, confirm the trigger and the definition of a pollution condition.
Keep your service documentation and recovery equipment certification current, because it is both a compliance matter and the evidence you will want.
And know where your work concentrates. A shop doing residential changeouts carries a different profile than one holding service contracts on occupied commercial buildings with large charges on the roof. The second is where this question gets expensive.
If you want that reviewed against your actual operations, a coverage review is the way to do it. The trade overview is on our HVAC contractor insurance page, the coverage itself on contractors pollution liability, and the broader exclusion picture in contractor general liability exclusions.