---
type: "Bill"
title: "A bill for an act relating to the use of certain refrigerants."
description: "A bill for an act relating to the use of certain refrigerants."
jurisdiction: "us/states/ia"
legislature: "Iowa General Assembly"
session: "2023-2024"
identifier: "HF 337"
citation: "Iowa HF 337 (2023-2024)"
classification: ["bill"]
subjects: ["building codes", "buildings", "safety standards"]
status: "enacted"
primary_sponsors: []
version_count: 3
action_count: 12
vote_count: 2
first_action: "2023-02-16"
last_action: "2023-03-22"
source: "openstates"
source_identifier: "ocd-bill/e92dcd5c-4fb3-4a8d-8e53-1f5c4eece9dd"
source_url: "https://www.legis.iowa.gov/legislation/billTracking/billHistory?billName=HF 337&ga=90"
source_hash: "f563a48a6be1b49a14a3a18162871599fed5fe1ac19165a43b8fc25534554535"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ia"]
---

# Iowa HF 337 (2023-2024) — A bill for an act relating to the use of certain refrigerants.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](https://www.legis.iowa.gov/docs/publications/LGI/90/attachments/HF337.html)
2. **Signed Enrolled Bill (PDF)** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGE/90/Attachments/HF337_GovLetter.pdf)
3. **Enrolled** (enrolled) — [source](https://www.legis.iowa.gov/docs/publications/LGE/90/attachments/HF337.html)

## Votes

- Shall the bill pass? — **47–0** (pass) · upper
- Shall the bill pass? — **95–0** (pass) · lower

## Sponsors

- COMMITTEE ON STATE GOVERNMENT — primary (organization)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-02-16** Introduced, placed on calendar. `introduction`
- **2023-02-22** Passed House, yeas 95, nays 0. `passage`
- **2023-03-09** Explanation of vote.
- **2023-02-22** Immediate message.
- **2023-02-22** Message from House.
- **2023-02-22** Read first time, attached to SF 320. `reading-1`
- **2023-03-06** Substituted for SF 320.
- **2023-03-06** Passed Senate, yeas 47, nays 0. `passage`
- **2023-03-06** Immediate message.
- **2023-03-07** Message from Senate.
- **2023-03-22** Reported correctly enrolled, signed by Speaker and President, and sent to Governor.
- **2023-03-22** Signed by Governor. `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/e92dcd5c-4fb3-4a8d-8e53-1f5c4eece9dd`. Confidence: reported (aggregated from official Iowa legislature records).