Devon: plumbing, heating and air-conditioning companies
Devon has 20 plumbing, heating and air-conditioning companies (SIC 43220) and 21 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 EX24, summer 2026 had ≈12 nights above 18 °C there (10 times the 1991–2020 average of 1.2).
SIC 43220
Open a company
A H CLAYDON & SON LIMITED, incorporated 2003, status Active.
Plumbing, heating and air-conditioning companies
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| W.J.MATHEWS(EXETER)LIMITED | 43210 · electrical installation; 33140; 36000; 37000 | 1941 | Active | EX2 |
| A C M ELECTRICAL LIMITED | 43210 · electrical installation | 2004 | Active | TQ14 |
| WARE BUILDERS & CONTRACTORS LIMITED | 43290 · other construction installation | 2005 | Active | EX17 |
| PORTE ELECTRICITE LIMITED | 43210 · electrical installation; 43390 | 1998 | Active | TQ2 |
| S.J. DARK LIMITED | 43210 · electrical installation | 1980 | Active | TQ3 |
| FIRE SECURITY UK LIMITED | 43210 · electrical installation | 2007 | Active | EX11 |
| PETER J WHEATLEY LTD | 43210 · electrical installation; 95220; 95290 | 2004 | Active | TQ5 |
| D.D. ELECTRICAL ENGINEERING LIMITED | 43210 · electrical installation | 2005 | Active | TQ5 |
| STEVE BRADFORD BUILDERS LIMITED | 43290 · other construction installation | 2006 | Active | EX17 |
| GUNN ELECTRICAL LIMITED | 43210 · electrical installation | 2022 | Active | EX15 |
| R J ELECTRICAL SOLUTIONS LTD | 43210 · electrical installation | 2006 | Active | EX10 |
| CHAPMAN ELECTRICAL (SOUTH WEST) LIMITED | 43210 · electrical installation | 2003 | Active | PL21 |
| TYNE ELECTRICAL SERVICES LTD. | 43210 · electrical installation | 2001 | Active | EX24 |
| ROGER UNDERDOWN LIMITED | 43210 · electrical installation; 93290 | 2002 | Active | EX24 |
| DAVE JOHNSON LIMITED | 43290 · other construction installation; 68209 | 2003 | Active | PL7 |
| ALL POWERED UP LIMITED | 43210 · electrical installation | 2003 | Active | EX21 |
| DIRECT ELECTRICAL CONTRACTORS LIMITED | 43210 · electrical installation | 1999 | Active | PL3 |
| JACKMAN SW LIMITED | 43290 · other construction installation | 1996 | Active | PL5 |
| CUPINE TRADING LIMITED | 43210 · electrical installation; 45200; 47990 | 2000 | Active | EX13 |
| L C S SYSTEMS (UK) LIMITED | 43210 · electrical installation | 2007 | Active | EX32 |
| SPENLEC LIMITED | 43210 · electrical installation | 2002 | Liquidation | EX10 |
Heat and planning around Devon
In Devon last summer (2026) there were ≈7.1 nights that stayed above 18 °C — 12 times the 1991–2020 average of 0.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities). The figure is the household-weighted mean of 27 postcode districts where these offices are registered.
13% of sampled postcodes in Devon sit in a conservation area (21,681 live postcodes across 27 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.