Northumberland: plumbing, heating and air-conditioning companies
Northumberland has 5 plumbing, heating and air-conditioning companies (SIC 43220) and 6 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 NE24, summer 2026 had ≈2 nights above 18 °C there (5 times the 1991–2020 average of 0.4).
SIC 43220
Open a company
M.MARSHALL AND SONS LIMITED, incorporated 2002, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| NE GAS SOLUTIONS LTD | 2019 | Active | NE22 |
| NU-HEAT (NORTH EAST) LTD | 2004 | Active | NE64 |
| YILDIZ PIPE FITTING SERVICES LIMITED | 2021 | Active | NE61 |
| ROBERT KIRKLAND (BLYTH) LIMITED | 1973 | Active | NE24 |
| M.MARSHALL AND SONS LIMITED | 2002 | Active | NE66 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| BRADLEYS MASTER LOCKSMITHS LTD | 43290 · other construction installation; 47520 | 1954 | Active | NE24 |
| STUART DUFFIELD ELECTRICAL LTD | 43210 · electrical installation | 2023 | Active | NE23 |
| COM-SPEC LIMITED | 43210 · electrical installation | 2003 | Active | NE24 |
| SMAILES & HANNANT LIMITED | 43210 · electrical installation | 2003 | Active | NE20 |
| LATHE JACKSON ESTATES HOLDING LIMITED | 43290 · other construction installation; 43390; 46130; 46770 | 2022 | Active | NE42 |
| CONEX DATA COMMUNICATIONS LIMITED | 43210 · electrical installation; 61100; 61200 | 2018 | Active | NE66 |
Heat and planning around Northumberland
In Northumberland last summer (2026) there were ≈1.4 nights that stayed above 18 °C — 5 times the 1991–2020 average of 0.3 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities). The figure is the household-weighted mean of 8 postcode districts where these offices are registered.
10% of sampled postcodes in Northumberland sit in a conservation area (6,272 live postcodes across 8 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.