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CR4: plumbing, heating and air-conditioning companies in London
CR4 (London) has 7 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 10 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, CR4 had ≈12 nights above 18 °C in 2026 (8 times the 1991–2020 average of 1.6).
CR4
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DIAMOND CONSTRUCTIONS LTD, incorporated 2008, status Liquidation.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| DIAMOND CONSTRUCTIONS LTD | 2008 | Liquidation | CR4 |
| GMA DEVELOPERS LTD | 2025 | Active | CR4 |
| GREEN LONDON PLUMBERS LTD | 2023 | Active | CR4 |
| MZ PLUMBING LTD | 2021 | Active | CR4 |
| PG VERSA-TILES LIMITED | 2016 | Active - Proposal to Strike off | CR4 |
| RENOVATION X LTD | 2017 | Active | CR4 |
| RIDGE MECH LTD | 2024 | Active | CR4 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| BESPOKE WINDOWS AND DOORS FOR YOU LTD | 43290 · other construction installation; 16230; 25120; 47990 | 2020 | Active | CR4 |
| BETA SECURITY SYSTEM LIMITED | 43210 · electrical installation; 62020; 80200; 96090 | 2012 | Active | CR4 |
| IWCIA LIMITED | 43210 · electrical installation | 2015 | Active | CR4 |
| OLEK BUILDERS LIMITED | 43290 · other construction installation; 43390 | 2018 | Active | CR4 |
| PRO PURE MANAGEMENT GROUP LIMITED | 43290 · other construction installation | 2025 | Active | CR4 |
| RSMP LTD | 43290 · other construction installation | 2018 | Liquidation | CR4 |
| SRGD LTD | 43290 · other construction installation | 2016 | Active | CR4 |
| THIS SIDE UP LTD | 43290 · other construction installation; 41202; 43110; 43390 | 2012 | Active - Proposal to Strike off | CR4 |
| TKJ ENERGY LTD | 43210 · electrical installation; 42220 | 2024 | Active | CR4 |
| VANTO SERVICES LTD | 43210 · electrical installation | 2021 | Active | CR4 |
What homes around CR4 need
In CR4 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).
7% of sampled postcodes in CR4 sit in a conservation area (on-record, 909 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 CR4, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in CR4, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in CR4, with that district's hot nights and planning rule.