Skip to main content

Manage the Refrigerant Catalog

The refrigerant catalog drives every Part 84 decision in TuffOps. Each row tells the policy resolver whether a unit charged with that refrigerant falls under Subpart C, stays under Part 82, or resolves as unknown until you classify it.

Get this list right once. Everything downstream — leak-rate thresholds, chronic-leaker math, EPA exports — keys off these flags.

Before you start​

  • You have the compliance.manage_refrigerant_catalog permission.
  • You know whether each refrigerant is an AIM-listed bulk substance (e.g. R-410A, R-134a), an ODS-only Class I substance (CFCs, HCFCs), or a substitute whose status depends on its 100-year GWP.
  • For substitutes, you have the GWP value and its source (AR4, AR5, manufacturer datasheet, etc.).

Steps​

  1. Open the catalog

    Select Refrigerant Types in the top navigation bar.

  2. Start a new entry

    Select the green New button at the top-left of the list.

  3. Name the refrigerant

    • Common name — what techs call it, e.g. "R-410A", "HFC-134a".
    • ASHRAE designation — the ASHRAE code, e.g. "R-410A". Used in dropdowns and EPA export columns.

  4. Classify under §84.106(a)

    • Tick AIM regulated substance for the bulk listed HFCs themselves (R-410A, R-134a, R-404A, …). Subpart C applies regardless of GWP.
    • Tick ODS-only carve-out for Class I substances (CFCs, HCFCs). These stay under Part 82 only. Mutually exclusive with the AIM flag.
    • Leave both unticked for substitutes — classification then depends on the GWP value.

  5. (Substitutes only) Record the GWP

    • GWP (100-yr) — the integer value, e.g. 2088 for R-410A. Required for the substitute path under §84.106(a)(2). Leave blank if unknown — the row resolves to unknown in exports until you classify it.
    • GWP basis — the source of the GWP figure, e.g. ar4, ar5, manufacturer. Required when GWP is set. Records provenance so an inspector can audit the figure years from now.

  6. Set visibility

    Leave Active ticked so the refrigerant shows up in new-unit and device-model dropdowns. Untick it to retire a refrigerant without losing historical linkages.

  7. Save

    Select the green Save button.

What happens next​

  • The refrigerant appears in pickers for new units, device models, and items.
  • The policy resolver uses the new flags on the next leak-rate calc that touches this refrigerant.
  • The Part 84 remediation queue removes any rows that this entry just classified.

Common situations​

SituationWhat to do
You're adding R-410A or another core HFCTick AIM regulated substance. GWP optional but recommended for the audit trail.
You're adding R-454B, R-32, or another substituteLeave both flags off. Set GWP and GWP basis. The resolver classifies it against the threshold.
You're adding R-22 (HCFC)Tick ODS-only carve-out. The unit will be tracked under Part 82, not Part 84.
You don't know the GWP yetSave with both flags off and GWP blank. The row appears in the Part 84 remediation queue under "needs classification" until you fill it in.
You're phasing out a refrigerant from new installsUntick Active. Existing units, calcs, and items keep their link. The refrigerant just stops appearing in new-record pickers.

Troubleshooting​

The Save button reports a conflict between AIM and ODS flags.

The two flags are mutually exclusive. A refrigerant is either an AIM-listed bulk substance, or an ODS-only Class I substance, or a substitute. Untick whichever flag doesn't apply.

Save fails with "GWP basis is required when GWP is set."

Whenever you record a GWP value, you must also record where it came from. Fill in GWP basis with ar4, ar5, manufacturer, or another short label. Leaving the basis blank would leave the GWP unauditable.

Delete is blocked.

The refrigerant is in use somewhere — a unit, a device model, an item, or a historical charge event. The catalog deliberately refuses to delete in-use rows so audit history stays intact. Untick Active instead to hide it from new pickers without breaking historical records.

A refrigerant I just added still shows in the Part 84 remediation queue.

The remediation queue shows two buckets: refrigerants needing classification (your fix removes them from this bucket) and units that have no refrigerant assigned at all. The unit-side bucket only clears once you assign a refrigerant on each affected unit. See Clear the Part 84 Remediation Queue.