Official description
43220
Plumbing, heat and air-conditioning installation
Source: Companies House condensed SIC code list (SIC 2007), checked 2026-09-17.
What this code covers, in plain English
Our interpretation, written by the companies.house editorial team. It is not part of the official description.
Installing and repairing plumbing, gas, heating, ventilation and air-conditioning systems in buildings. This is the usual code for plumbers and heating engineers.
Examples
- A sole-director company fitting and servicing boilers
- A firm installing air-conditioning in offices
- A bathroom installer whose main work is the plumbing
Codes people confuse with this one
| Code | Official description | How it differs |
|---|---|---|
| 43210 | Electrical installation | Electrical installation work rather than pipework and heating. |
| 43390 | Not in our dataset | Finishing work such as tiling and fitting where plumbing is incidental. |
| 33120 | Not in our dataset | Repairing industrial machinery rather than building services. |
A SIC code is not a qualification. Gas work in Great Britain requires Gas Safe registration, which the company register does not record.
Sources
Reviewed 2026-10-01 by companies.house.