SIC code 43220 (Plumbing, heat and air-conditioning installation) is one of the most widely used business classifications in the UK, with 41,727 active companies registered under this code. It falls under Section F (Construction) of the UK SIC 2007 classification system. The average company age is 8.0 years. The leading locations are SIDCUP (103) and CANNOCK (90).
See the full industry analysis on the Plumbing, heat and air-conditioning installation industry page.
SIC code 43220 stands for "Plumbing, heat and air-conditioning installation" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section F — Construction. Companies use this code when registering with Companies House to indicate their primary business activity.
There are currently 41,727 active companies registered under SIC code 43220 in the UK, out of 46,982 total registrations (including dissolved companies).
The top locations for companies classified under SIC 43220 are: SIDCUP (103), CANNOCK (90), BEXLEY (78). These areas represent the highest concentration of plumbing, heat and air-conditioning installation businesses in the UK.
Search, filter, and analyse 41,727 companies classified under this SIC code with AI-powered risk intelligence.
Data sourced from Companies House, HM Land Registry, FCA Register, and 50+ government databases. SIC classification follows the UK Standard Industrial Classification of Economic Activities 2007 (SIC 2007). Last updated: 2026-04-05.