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SW4: plumbing, heating and air-conditioning companies in London
SW4 (London) has 16 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 13 electrical and other installation companies (Companies House, 1 Sep 2026); 0 are MCS-certified for air-to-air yet. If the summer is the question, SW4 had ≈12 nights above 18 °C in 2026 (8 times the 1991–2020 average of 1.6).
SW4
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ALMECH LTD, incorporated 2023, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| ALMECH LTD | 2023 | Active | SW4 |
| BLISSFIX PLUMBING AND HEATING LTD | 2026 | Active | SW4 |
| CENA PLUMBING AND HEATING LIMITED | 2017 | Active | SW4 |
| EPG SPECIALISTS LTD | 2010 | Active | SW4 |
| GAS PROCO (LONDON) LTD | 2014 | Active | SW4 |
| GTB (FT) LTD | 2025 | Active | SW4 |
| HEATSMITHS LTD | 2016 | Active - Proposal to Strike off | SW4 |
| JCH LONDON LTD | 2009 | Active | SW4 |
| LOUIS SPARROW LTD | 2020 | Active | SW4 |
| NATIONAL PLUMBING LTD | 2022 | Active | SW4 |
| NKPLUMBINGREP LIMITED | 2025 | Active | SW4 |
| SAFEFLOW HEATING & PLUMBING LTD | 2025 | Active | SW4 |
| STATELY INCEPTIONS LTD | 2017 | Active - Proposal to Strike off | SW4 |
| TENPER HEATING LTD | 2025 | Active - Proposal to Strike off | SW4 |
| TRICKS OF THE TRADE PROPERTY SOLUTIONS LTD | 2025 | Active - Proposal to Strike off | SW4 |
| WEKNOWHOW LTD | 2020 | Active | SW4 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| 3COL MAINTENANCE SERVICES LTD | 43290 · other construction installation; 43341; 43999 | 2024 | Active | SW4 |
| BEDOYA ELECTRICAL LTD | 43210 · electrical installation | 2017 | Active | SW4 |
| DMI OPTIMUM ELECTRICAL LIMITED | 43210 · electrical installation | 2025 | Active - Proposal to Strike off | SW4 |
| ECO 2 HEATING LTD | 43290 · other construction installation | 2025 | Active | SW4 |
| ELEYTRIX LTD | 43210 · electrical installation | 2025 | Active | SW4 |
| ES ELECTRICAL DESIGN LTD | 43210 · electrical installation | 2025 | Active | SW4 |
| HALER ELECTRICAL LTD | 43210 · electrical installation | 2020 | Active | SW4 |
| JONI ELECTRICAL LIMITED | 43210 · electrical installation | 2016 | Active | SW4 |
| MEDIA STRING LIMITED | 43210 · electrical installation | 2015 | Active - Proposal to Strike off | SW4 |
| PROVAC SOLUTIONS LIMITED | 43290 · other construction installation | 2026 | Active | SW4 |
| RITA KOKAY LTD | 43290 · other construction installation; 14390; 79110; 90030 | 2026 | Active | SW4 |
| ROGER DAVIES BUILDING LTD | 43290 · other construction installation | 1999 | Active | SW4 |
| TOMNSON LTD | 43210 · electrical installation | 2026 | Active | SW4 |
What homes around SW4 need
In SW4 last summer (2026) there were ≈12 nights that stayed above 18 °C — 8 times the 1991–2020 average of 1.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
34% of sampled postcodes in SW4 sit in a conservation area (on-record, 929 live postcodes).
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 for SW4, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in SW4, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in SW4, with that district's hot nights and planning rule.