Norfolk, King's Lynn and West Norfolk: plumbing, heating and air-conditioning companies
Norfolk, King's Lynn and West Norfolk has 2 plumbing, heating and air-conditioning companies (SIC 43220) and 8 electrical and other installation companies registered here (Companies House, 1 Sep 2026); 0 are MCS-certified for air-to-air yet. If the office is in PE30, summer 2026 had ≈10 nights above 18 °C there (5 times the 1991–2020 average of 1.9).
SIC 43220
Open a company
DEMPSEY HEATING LIMITED, incorporated 1996, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| GASWISE SERVICES LIMITED | 2000 | Active | PE30 |
| DEMPSEY HEATING LIMITED | 1996 | Active | PE30 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| JBT ELECTRICAL LTD | 43210 · electrical installation | 2018 | Active | PE33 |
| ELECSURE LIMITED | 43210 · electrical installation | 1993 | Active | PE30 |
| M C ELECTRICAL (E.A.) LIMITED | 43210 · electrical installation | 2006 | Active | PE30 |
| S. WARD ELECTRICAL LIMITED | 43210 · electrical installation | 2007 | Active | PE30 |
| JOHNSON STEELFIXING LIMITED | 43290 · other construction installation | 2004 | Active | PE30 |
| NEIL WHICKER ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2005 | Active | PE38 |
| S J BURTON ELECTRICAL CONTRACTOR LIMITED | 43210 · electrical installation | 2004 | Active | PE38 |
| N KELLY LTD | 43210 · electrical installation | 2015 | Active - Proposal to Strike off | IP26 |
Heat and planning around Norfolk, King's Lynn and West Norfolk
In Norfolk, King's Lynn and West Norfolk last summer (2026) there were ≈9.4 nights that stayed above 18 °C — 5 times the 1991–2020 average of 1.9 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities). The figure is the household-weighted mean of 4 postcode districts where these offices are registered.
14% of sampled postcodes in Norfolk, King's Lynn and West Norfolk sit in a conservation area (2,635 live postcodes across 4 districts).
In England an air-source heat pump on a house can be permitted development under Class G when the conditions hold, including the MCS 020a noise limit of 37.0 dB(A) (§3.2 Step 8).
Companies House snapshot 1 Sep 2026, retrieved 25 Sep 2026. The address shown is the registered office, not a verified operating base. This catalogue is a directory of incorporated businesses, not an exhaustive installer register. Hot nights: ERA5-ARCO, June–August, minimum at or above 18 °C, household-weighted across the districts where these offices are registered, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points, snapshot 25 Sep 2026. Distances are an equirectangular approximation to 0.1 km.
Better than a town directory that only lists names: each plumbing company links to its Companies House record and the local hot-night count.