Radlett: plumbing, heating and air-conditioning companies
Radlett has 9 plumbing, heating and air-conditioning companies (SIC 43220) and 17 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 WD7, summer 2026 had ≈11 nights above 18 °C there (7 times the 1991–2020 average of 1.5).
SIC 43220
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C&S PLUMBING LTD, incorporated 2021, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| P.C. PLUMBING LIMITED | 2007 | Active | WD7 |
| ECO-TRON GROUP LTD | 2017 | Active | WD7 |
| DIMOND PLUMBING LTD | 2009 | Active | WD7 |
| C&S PLUMBING LTD | 2021 | Active | WD7 |
| CRPK ENGINEERING LTD | 2024 | Active | WD7 |
| GAS WIZ LTD | 2024 | Active | WD7 |
| MAZAL PLUMBING AND ELECTRICAL LIMITED | 2026 | Active | WD7 |
| R G PLUMBING & HEATING SERVICES LTD | 2015 | Active | WD7 |
| LB PLUMBING AND HEATING CONTRACTS LIMITED | 2014 | Active - Proposal to Strike off | WD7 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| BATHROOMS AND KITCHENS LIMITED | 43290 · other construction installation | 2019 | Active | WD7 |
| EVOLUTION BLINDS & INTERIORS LTD | 43290 · other construction installation; 13921; 74100 | 2021 | Active | WD7 |
| IMEDCO LIMITED | 43290 · other construction installation | 1998 | Active | WD7 |
| NEXT STEP CORPORATE LTD | 43210 · electrical installation; 41201; 41202 | 2025 | Active | WD7 |
| THERMASASH LTD | 43290 · other construction installation; 43342; 96090 | 2018 | Active | WD7 |
| WRENS LIMITED | 43290 · other construction installation | 2002 | Active | WD7 |
| ETM.B SERVICES LTD | 43210 · electrical installation; 41201; 41202 | 2019 | Active | WD7 |
| RAMOSY ELECTRICAL LTD | 43210 · electrical installation | 2026 | Active | WD7 |
| EAG GROUP LIMITED | 43210 · electrical installation; 42990 | 2012 | Active | WD7 |
| D71 LTD | 43290 · other construction installation | 2023 | Active | WD7 |
| HRB ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2022 | Active | WD7 |
| GEFYRA WATERPROOFING LTD | 43290 · other construction installation | 2023 | Active | WD7 |
| R.A. SPARKS LTD | 43210 · electrical installation | 2023 | Active | WD7 |
| DO IT ALL SOLUTIONS LTD | 43290 · other construction installation; 43310; 43390 | 2023 | Active | WD7 |
| BESPOKE AV LTD | 43290 · other construction installation | 2024 | Active - Proposal to Strike off | WD7 |
| SALT AV LTD | 43210 · electrical installation | 2024 | Active - Proposal to Strike off | WD7 |
| MORLEY’S & MORE LTD | 43290 · other construction installation | 2025 | Active - Proposal to Strike off | WD7 |
Heat and planning around Radlett
In Radlett last summer (2026) there were ≈11 nights that stayed above 18 °C — 7 times the 1991–2020 average of 1.5 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities). The figure is the household-weighted mean of 1 postcode districts where these offices are registered.
20% of sampled postcodes in Radlett sit in a conservation area (428 live postcodes across 1 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.