---
title: "8405 HSN Code | HSN Code for Gas generators and purifiers in India"
description: "Know more about 8405 HSN Code with BUSY Accounting - HSN Tariff, GST Rates and case laws related to chapter 8405 covering Gas generators and purifiers."
canonical: "https://busy.in/hsn/sub-chapter-8405/"
---

# HSN Sub-chapter 8405: Gas generators and purifiers

Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers

Part of [Chapter 84: Nuclear Reactors, Boilers & Machinery](https://busy.in/hsn/chapter-84/).

- Current GST rate: 18%
- Earlier GST rate: 18%

## HSN codes

| Code | Title |
| --- | --- |
| 84051010 | [Other Gas Generators](https://busy.in/hsn/hsn-84051010/) |
| 84051020 | [Other Processing Units](https://busy.in/hsn/hsn-84051020/) |
| 84051090 | [Acetylene Gas Generators](https://busy.in/hsn/hsn-84051090/) |
| 84059000 | [Parts](https://busy.in/hsn/hsn-84059000/) |

## Frequently asked questions

### What products are classified under HSN 8405

It includes Gas generators and purifiers

### Is the composition scheme suitable if I mainly trade Gas generators and purifiers?

The composition scheme is optional for eligible small suppliers of goods. You cannot issue tax invoices or collect tax under composition. Check turnover limits and exclusions; evaluate margins and ITC loss before opting in.

### How are warranty replacements of Gas generators and purifiers handled?

If replacement is without consideration under a pre‑agreed warranty, issue a delivery challan and reference the original invoice/contract. If consideration is charged, raise a tax invoice. Keep serial/lot details for traceability.

### Can I claim ITC on inputs and services used for Gas generators and purifiers?

If your outward supply of Gas generators and purifiers is taxable, ITC is generally available (Sections 16–17) except blocked credits (e.g., personal use, motor vehicles in most cases). For exempt supplies, proportionate reversal is required under Rule 42/43.

### What are the e‑way bill and e‑invoice points while moving Gas generators and purifiers?

Generate an e‑way bill when the consignment value exceeds ₹50,000, unless exempted for the transaction. E‑invoicing depends on turnover (AATO threshold as notified) for B2B supplies, not on the item itself.

### If I repair and return Gas generators and purifiers, how should I charge GST?

Repair/service is a service supply (SAC). Parts and materials used are goods and may be billed separately with HSN. Mention both lines clearly to avoid mixing service and goods values.

### Does packaging or branding change how GST applies to Gas generators and purifiers?

Yes. Many food/agri goods are treated differently when sold as pre‑packaged & labelled retail packs versus loose/open packs. If Gas generators and purifiers is sold in small pouches (e.g., 500 g) with an MRP and label, record that on the invoice. Loose bulk bags often follow a different treatment.

## India's trade performance: HSN Sub-Chapter 8405 (FY 2024-25)

Source: TradeStat EIDB, Ministry of Commerce & Industry. Values in ₹ Crore (FY 2018-19 to FY 2024-25).

- Exports: ₹181 Cr (−41.62% YoY) — 0.0049% of India's total exports
- Imports: ₹275 Cr (−37.47% YoY) — 0.0045% of India's total imports
- Trade balance: −₹94 Cr (Deficit); surplus rank #714 of 1233 sub-chapters
- Share of Chapter 84: 0.06% of its exports; import side 0.05%
- Rank within Chapter 84: #69 of 86 by export value; import-side #77

### Key metrics

- Export CAGR: 1.07% (FY 2018-19 to FY 2024-25, 7 fiscal years)
- National export rank: #719 of 1233 sub-chapters by export value (FY 2024-25)
- Peak growth year: +53.33% in FY 2022-23
- Contribution to Ch. 84: 0.06% of its exports (FY 2024-25)

## India export-import trade statistics: HSN Sub-Chapter 8405

7-year export and import data, FY 2018-19 to FY 2024-25, in ₹ Crore. Source: Ministry of Commerce & Industry, TradeStat EIDB.

| FY | Exports (₹ Cr) | Exp share | Exp YoY | Exp % of Ch. 84 | Imports (₹ Cr) | Imp share | Imp YoY | Imp % of Ch. 84 | Trade balance | Exp rank |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| FY 2018-19 | 169.35 | 0.0074% | — | 0.12% | 149.61 | 0.0042% | — | 0.05% | +19.74 | #629 |
| FY 2019-20 | 178.22 | 0.0081% | +5.24% | 0.12% | 141.88 | 0.0042% | −5.17% | 0.05% | +36.34 | #614 |
| FY 2020-21 | 112.27 | 0.0052% | −37.00% | 0.08% | 160.72 | 0.0055% | +13.28% | 0.06% | −48.45 | #702 |
| FY 2021-22 | 149.46 | 0.0048% | +33.13% | 0.08% | 164.31 | 0.0036% | +2.23% | 0.04% | −14.85 | #715 |
| FY 2022-23 | 229.17 | 0.0063% | +53.33% | 0.10% | 282.11 | 0.0049% | +71.69% | 0.06% | −52.94 | #661 |
| FY 2023-24 | 309.26 | 0.0085% | +34.95% | 0.12% | 439.16 | 0.0078% | +55.67% | 0.09% | −129.90 | #614 |
| FY 2024-25 | 180.54 | 0.0049% | −41.62% | 0.06% | 274.61 | 0.0045% | −37.47% | 0.05% | −94.07 | #719 |

- CAGR (7-year): exports 1.07%/yr, imports 10.65%/yr (consistently Deficit)

## Key trade insights: HSN Sub-Chapter 8405 export-import analysis

### Consistent export growth: 1.07% CAGR over 7 years

India's exports under HSN Sub-Chapter 8405 have grown at a compound annual rate of 1.07% over 7 fiscal years, rising from ₹169.35 Crore in FY 2018-19 to ₹180.54 Crore in FY 2024-25.

### HSN Sub-Chapter 8405 ranked #719 among all 1233 sub-chapters by export value

In FY 2024-25, HSN Sub-Chapter 8405 ranks #719 out of 1233 sub-chapters by total export value. Within Chapter 84, it ranks #69 of 86. By trade surplus, it ranks #714 of 1233.

### FY 2022-23 was the strongest growth year for HSN Sub-Chapter 8405 exports

The strongest single-year export movement for HSN Sub-Chapter 8405 was recorded in FY 2022-23, when exports surged by 53.33% over the prior year.

### India records a trade deficit of ₹94.07 Crore in HSN Sub-Chapter 8405 goods

In FY 2024-25, India's imports of ₹274.61 Cr exceeded exports of ₹180.54 Cr, resulting in a trade deficit of ₹94.07 Crore — ranking #714 of 1233 by surplus magnitude.

### Import growth of 10.65% CAGR signals rising demand for Gas generators and purifiers

India's imports under HSN Sub-Chapter 8405 have grown at 10.65% CAGR, reaching ₹274.61 Crore in FY 2024-25.

### HSN Sub-Chapter 8405 contributes 0.06% of Chapter 84 exports — ranked #69

Among the 86 sub-chapters under Chapter 84, HSN Sub-Chapter 8405 ranks #69 by export value — accounting for 0.06% of the chapter's total exports in FY 2024-25. On the import side, it holds 0.05% share (rank #77).

## Related Sub-Chapters in Chapter 84

Ranked by export value (FY 2024-25).

| Rank | HSN Sub-Chapter | Exports (FY 2024-25) |
| --- | --- | --- |
| #1 | [HSN Sub-Chapter 8411: Turbo-jets & gas turbines](https://busy.in/hsn/sub-chapter-8411/) | ₹44,981 Cr |
| #2 | [HSN Sub-Chapter 8481: Pressure-reducing valves](https://busy.in/hsn/sub-chapter-8481/) | ₹20,993 Cr |
| #3 | [HSN Sub-Chapter 8483: Transmission shafts & cranks](https://busy.in/hsn/sub-chapter-8483/) | ₹18,429 Cr |
| #4 | [HSN Sub-Chapter 8409: Parts for engine machinery](https://busy.in/hsn/sub-chapter-8409/) | ₹14,091 Cr |
| #5 | [HSN Sub-Chapter 8413: Fire extinguisher charges](https://busy.in/hsn/sub-chapter-8413/) | ₹12,900 Cr |
| #6 | [HSN Sub-Chapter 8414: Air pumps, compressors, ventilators](https://busy.in/hsn/sub-chapter-8414/) | ₹12,257 Cr |
| #7 | [HSN Sub-Chapter 8429: Self-propelled bulldozers](https://busy.in/hsn/sub-chapter-8429/) | ₹12,180 Cr |
| #8 | [HSN Sub-Chapter 8431: Machinery parts for headings 8425-8430](https://busy.in/hsn/sub-chapter-8431/) | ₹11,648 Cr |
| #9 | [HSN Sub-Chapter 8408: Diesel Engines](https://busy.in/hsn/sub-chapter-8408/) | ₹11,234 Cr |
| #10 | [HSN Sub-Chapter 8479: Mechanical appliances](https://busy.in/hsn/sub-chapter-8479/) | ₹10,758 Cr |
| #69 | HSN Sub-Chapter 8405: Gas generators and purifiers (this hsn sub-chapter) | ₹181 Cr |

## Other sub-chapters

| Code | Title |
| --- | --- |
| 8401 | [Nuclear reactors](https://busy.in/hsn/sub-chapter-8401/) |
| 8402 | [Vapor Generating Boilers](https://busy.in/hsn/sub-chapter-8402/) |
| 8403 | [Central heating boilers](https://busy.in/hsn/sub-chapter-8403/) |
| 8404 | [Boiler auxiliary plant](https://busy.in/hsn/sub-chapter-8404/) |
| 8406 | [Steam & vapour turbines](https://busy.in/hsn/sub-chapter-8406/) |
| 8407 | [Retail Filament Yarn](https://busy.in/hsn/sub-chapter-8407/) |
| 8408 | [Diesel Engines](https://busy.in/hsn/sub-chapter-8408/) |
| 8409 | [Parts for engine machinery](https://busy.in/hsn/sub-chapter-8409/) |
| 8410 | [Hydraulic turbines](https://busy.in/hsn/sub-chapter-8410/) |
| 8411 | [Turbo-jets & gas turbines](https://busy.in/hsn/sub-chapter-8411/) |
| 8412 | [Other engines & motors](https://busy.in/hsn/sub-chapter-8412/) |
| 8413 | [Fire extinguisher charges](https://busy.in/hsn/sub-chapter-8413/) |
| 8414 | [Air pumps, compressors, ventilators](https://busy.in/hsn/sub-chapter-8414/) |
| 8415 | [Motorized AC Machines](https://busy.in/hsn/sub-chapter-8415/) |
| 8416 | [Furnace Burners](https://busy.in/hsn/sub-chapter-8416/) |
| 8417 | [Knitted garments](https://busy.in/hsn/sub-chapter-8417/) |
| 8418 | [Refrigerators, freezers, heat pumps](https://busy.in/hsn/sub-chapter-8418/) |
| 8419 | [Non-Domestic Treatment Machines](https://busy.in/hsn/sub-chapter-8419/) |
| 8420 | [Rolling machines for non-metals](https://busy.in/hsn/sub-chapter-8420/) |
| 8421 | [Centrifuges & filtering machines](https://busy.in/hsn/sub-chapter-8421/) |
| 8422 | [Dishwashing & packaging machinery](https://busy.in/hsn/sub-chapter-8422/) |
| 8423 | [Weighing Machinery](https://busy.in/hsn/sub-chapter-8423/) |
| 8424 | [Liquid sprayers](https://busy.in/hsn/sub-chapter-8424/) |
| 8425 | [Hypochlorites & chlorites](https://busy.in/hsn/sub-chapter-8425/) |
| 8426 | [Ship’s Cranes](https://busy.in/hsn/sub-chapter-8426/) |
| 8427 | [Vehicle Chassis](https://busy.in/hsn/sub-chapter-8427/) |
| 8428 | [Lifting & loading machinery](https://busy.in/hsn/sub-chapter-8428/) |
| 8429 | [Self-propelled bulldozers](https://busy.in/hsn/sub-chapter-8429/) |
| 8430 | [Earth boring machinery](https://busy.in/hsn/sub-chapter-8430/) |
| 8431 | [Machinery parts for headings 8425-8430](https://busy.in/hsn/sub-chapter-8431/) |
| 8432 | [Agricultural machinery](https://busy.in/hsn/sub-chapter-8432/) |
| 8433 | [Harvesting Machinery](https://busy.in/hsn/sub-chapter-8433/) |
| 8434 | [Milking Machines, Dairy Machinery](https://busy.in/hsn/sub-chapter-8434/) |
| 8435 | [Wine production machinery](https://busy.in/hsn/sub-chapter-8435/) |
| 8436 | [Agricultural Machines](https://busy.in/hsn/sub-chapter-8436/) |
| 8437 | [Grain Sorting Machines](https://busy.in/hsn/sub-chapter-8437/) |
| 8438 | [Food Preparation Machinery](https://busy.in/hsn/sub-chapter-8438/) |
| 8439 | [Paper-making Machinery](https://busy.in/hsn/sub-chapter-8439/) |
| 8440 | [Bookbinding Machinery](https://busy.in/hsn/sub-chapter-8440/) |
| 8441 | [Paper pulp production machinery](https://busy.in/hsn/sub-chapter-8441/) |
| 8442 | [Plate making Machinery & equipment](https://busy.in/hsn/sub-chapter-8442/) |
| 8443 | [Printing machinery & accessories](https://busy.in/hsn/sub-chapter-8443/) |
| 8444 | [Electrical transformers](https://busy.in/hsn/sub-chapter-8444/) |
| 8445 | [Textile Machines](https://busy.in/hsn/sub-chapter-8445/) |
| 8446 | [Weaving machines](https://busy.in/hsn/sub-chapter-8446/) |
| 8447 | [Knitting & Stitch-Bonding Machines](https://busy.in/hsn/sub-chapter-8447/) |
| 8448 | [Auxiliary Machinery](https://busy.in/hsn/sub-chapter-8448/) |
| 8449 | [Felt & Nonwoven Machinery](https://busy.in/hsn/sub-chapter-8449/) |
| 8450 | [Washing machines](https://busy.in/hsn/sub-chapter-8450/) |
| 8451 | [Textile Industry Machinery](https://busy.in/hsn/sub-chapter-8451/) |
| 8452 | [Sewing Machines & Accessories](https://busy.in/hsn/sub-chapter-8452/) |
| 8453 | [Machinery for working leather & hides](https://busy.in/hsn/sub-chapter-8453/) |
| 8454 | [Metallurgical Casting Machines](https://busy.in/hsn/sub-chapter-8454/) |
| 8455 | [Metal-Rolling Mills](https://busy.in/hsn/sub-chapter-8455/) |
| 8456 | [Laser Removal Tools](https://busy.in/hsn/sub-chapter-8456/) |
| 8457 | [Metalworking Machines](https://busy.in/hsn/sub-chapter-8457/) |
| 8458 | [Metal Lathes](https://busy.in/hsn/sub-chapter-8458/) |
| 8459 | [Drilling Machines](https://busy.in/hsn/sub-chapter-8459/) |
| 8460 | [Machine-Tools For Metal Finishing](https://busy.in/hsn/sub-chapter-8460/) |
| 8461 | [Metal Cutting & Shaping Machine](https://busy.in/hsn/sub-chapter-8461/) |
| 8462 | [Metal forging & die-stamping machines](https://busy.in/hsn/sub-chapter-8462/) |
| 8463 | [Fork-lift trucks](https://busy.in/hsn/sub-chapter-8463/) |
| 8464 | [Parts & Accessories For Machine Tools](https://busy.in/hsn/sub-chapter-8464/) |
| 8465 | [Machine-tools for hard materials](https://busy.in/hsn/sub-chapter-8465/) |
| 8466 | [Machine parts](https://busy.in/hsn/sub-chapter-8466/) |
| 8467 | [Hand Tools, Hydraulic & Motorized](https://busy.in/hsn/sub-chapter-8467/) |
| 8468 | [Welding apparatus](https://busy.in/hsn/sub-chapter-8468/) |
| 8470 | [Calculating machines & cash registers](https://busy.in/hsn/sub-chapter-8470/) |
| 8471 | [Data processing machines & readers](https://busy.in/hsn/sub-chapter-8471/) |
| 8472 | [Other Office Machines](https://busy.in/hsn/sub-chapter-8472/) |
| 8473 | [Machine Parts & Accessories](https://busy.in/hsn/sub-chapter-8473/) |
| 8474 | [Sorting, grinding & mixing Machinery](https://busy.in/hsn/sub-chapter-8474/) |
| 8475 | [Glass lamp assembly machines](https://busy.in/hsn/sub-chapter-8475/) |
| 8476 | [Vending Machines](https://busy.in/hsn/sub-chapter-8476/) |
| 8477 | [Rubber & Plastic Machines](https://busy.in/hsn/sub-chapter-8477/) |
| 8478 | [Tobacco processing machinery](https://busy.in/hsn/sub-chapter-8478/) |
| 8479 | [Mechanical appliances](https://busy.in/hsn/sub-chapter-8479/) |
| 8480 | [Moulding Boxes & Patterns](https://busy.in/hsn/sub-chapter-8480/) |
| 8481 | [Pressure-reducing valves](https://busy.in/hsn/sub-chapter-8481/) |
| 8482 | [Ball Or Roller Bearings](https://busy.in/hsn/sub-chapter-8482/) |
| 8483 | [Transmission shafts & cranks](https://busy.in/hsn/sub-chapter-8483/) |
| 8484 | [Metal gaskets & mechanical seals](https://busy.in/hsn/sub-chapter-8484/) |
| 8485 | [Additive manufacturing machines](https://busy.in/hsn/sub-chapter-8485/) |
| 8486 | [Semiconductor Manufacturing Machines](https://busy.in/hsn/sub-chapter-8486/) |
| 8487 | [Non-electrical machine parts](https://busy.in/hsn/sub-chapter-8487/) |