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CO4: plumbing, heating and air-conditioning companies in Colchester
CO4 (Colchester) has 62 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 81 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, CO4 had ≈16 nights above 18 °C in 2026 (5 times the 1991–2020 average of 2.9).
CO4
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A & S PLUMBING & HEATING SERVICES LTD, incorporated 2006, status Active.
Plumbing, heating and air-conditioning companies
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| A D MITCHELL ELECTRICAL LTD | 43210 · electrical installation | 2022 | Active | CO4 |
| A.G.R ELECTRICS LTD | 43210 · electrical installation | 2025 | Active | CO4 |
| A.RILEY ELECTRICAL LTD | 43210 · electrical installation | 2021 | Active | CO4 |
| ALL WAYS WIRED LTD | 43210 · electrical installation | 2002 | Active | CO4 |
| AMP ELECTRICAL (ESSEX) LTD | 43210 · electrical installation | 2007 | Active | CO4 |
| APOLLO ELECTRICAL (SOUTH EAST) LTD | 43210 · electrical installation | 2022 | Active | CO4 |
| APS TECHNOCRATS UK LIMITED T/A APSTECHS UK LTD | 43210 · electrical installation; 43290 · other construction installation; 71122 | 2019 | Active | CO4 |
| ARO ELECTRICAL LIMITED | 43210 · electrical installation | 2025 | Active | CO4 |
| AS ROOM LOFTS LTD | 43290 · other construction installation; 41100 | 2020 | Active | CO4 |
| CB INSTALLATIONS (HALSTEAD) LTD | 43290 · other construction installation | 2022 | Active | CO4 |
| CFB ELECTRICAL LTD | 43210 · electrical installation | 2012 | Active | CO4 |
| CLOWSER ELECTRICAL LTD | 43210 · electrical installation | 2026 | Active | CO4 |
| CM ELECTRICAL ESSEX LTD | 43210 · electrical installation | 2022 | Active | CO4 |
| CONSTRUCTION IMC LTD | 43290 · other construction installation | 2026 | Active | CO4 |
| CROSBY & BARNARD PROPERTIES LTD | 43290 · other construction installation; 68100; 68209 | 2026 | Active | CO4 |
| DELTA T MECHANICAL AND ELECTRICAL LIMITED | 43210 · electrical installation | 2014 | Active | CO4 |
| DEVON INTERIORS & CONTRACTORS KITCHENS LTD | 43290 · other construction installation | 2024 | Active | CO4 |
| DEXTA ELECTRICAL LTD. | 43210 · electrical installation | 2011 | Active | CO4 |
| DPATEY LIMITED | 43210 · electrical installation; 56103 | 2018 | Active | CO4 |
| DRAYTON UTILITIES LTD | 43210 · electrical installation | 2019 | Active | CO4 |
| DRXT SIGNALLING SERVICES LTD | 43210 · electrical installation | 2021 | Active | CO4 |
| E&T PROPERTY SOLUTION LTD | 43290 · other construction installation; 41202; 43390 | 2026 | Active | CO4 |
| ECO-PULSE (ESSEX) LIMITED | 43210 · electrical installation | 2024 | Active | CO4 |
| ELECBUILD LTD | 43210 · electrical installation | 2017 | Active | CO4 |
| ELECTRACOM INSTALLATIONS LTD | 43210 · electrical installation | 2011 | Active | CO4 |
| ELLIS FIXING LIMITED | 43290 · other construction installation | 2005 | Liquidation | CO4 |
| EVERY EV SOLUTIONS LTD | 43210 · electrical installation | 2025 | Active | CO4 |
| FDY BUILDING SERVICES LTD | 43210 · electrical installation; 41202; 43341 | 2019 | Active | CO4 |
| FRANKNOX LIMITED | 43210 · electrical installation; 43390 | 2023 | Active | CO4 |
| FRANKORA LIMITED | 43210 · electrical installation; 43390 | 2026 | Active | CO4 |
| FROG ELECTRICAL LTD | 43210 · electrical installation | 2017 | Active | CO4 |
| GALVANIZE CONTRACTS LTD | 43210 · electrical installation | 2015 | Active | CO4 |
| GOODWOODS INSTALLATIONS LTD | 43210 · electrical installation | 2022 | Active | CO4 |
| GUNNETT DIGGER HIRE LTD | 43290 · other construction installation | 2015 | Active | CO4 |
| HAM COMMUNICATION LTD | 43210 · electrical installation | 2025 | Active | CO4 |
| HARPAIT DESIGN & BUILD LIMITED | 43290 · other construction installation | 2018 | Active | CO4 |
| HJA ELECTRICAL SERVICES LIMITED | 43210 · electrical installation; 74100 | 2023 | Active | CO4 |
| IMOTEC ELECTRICAL LTD | 43210 · electrical installation | 2021 | Active | CO4 |
| INNOV8 ELECTRICAL SOLUTIONS LTD | 43210 · electrical installation | 2020 | Active | CO4 |
| J G WRIGHT THERMAL SERVICES LTD | 43290 · other construction installation | 2021 | Active | CO4 |
| JK ELECTRICAL & BUILDING SERVICES LTD | 43210 · electrical installation | 2015 | Active - Proposal to Strike off | CO4 |
| JML CONSTRUCTION LTD | 43290 · other construction installation | 2025 | Active | CO4 |
| JW SMART COMPANY LTD | 43290 · other construction installation | 2021 | Active | CO4 |
| KC POWER LTD | 43210 · electrical installation; 33140; 71129 | 2022 | Active | CO4 |
| LYONS POWER LTD | 43210 · electrical installation | 2019 | Active | CO4 |
| M&L INSULATION CONTRACTORS LIMITED | 43210 · electrical installation; 43290 · other construction installation; 43910 | 2025 | Active | CO4 |
| MAH PIPE CONTRACTORS LIMITED | 43290 · other construction installation | 2017 | Active | CO4 |
| MAX CLAD LTD | 43290 · other construction installation | 2023 | Active | CO4 |
| MOFFATT ELECTRICAL LTD | 43210 · electrical installation | 2019 | Active | CO4 |
| MOLDOVITA LTD | 43210 · electrical installation | 2015 | Active | CO4 |
| MPELECTRICIANS LTD | 43210 · electrical installation; 80200 | 2020 | Active | CO4 |
| MPM TRADE LTD | 43210 · electrical installation; 41201; 43341; 80200 | 2020 | Active | CO4 |
| NES ARCHITECTURAL LIMITED | 43290 · other construction installation; 25990 | 2013 | Active | CO4 |
| OLIVER MATTHEW CONSTRUCTION LTD | 43290 · other construction installation; 41201; 41202 | 2023 | Active | CO4 |
| PINPOINT ELECTRICAL LTD | 43210 · electrical installation | 2023 | Active | CO4 |
| PLUMMER ELECTRICAL ENGINEERING LIMITED | 43210 · electrical installation | 2024 | Active | CO4 |
| POWERED ENTERPRISE LIMITED | 43210 · electrical installation | 2024 | Active | CO4 |
| POWERTECH ELECTRICAL INSTALLERS LTD | 43210 · electrical installation | 2023 | Active | CO4 |
| PROJECT ELECTRIC LIMITED | 43210 · electrical installation; 71121; 71129; 71200 | 2006 | Active | CO4 |
| REACTIVE M&E SERVICES LTD | 43210 · electrical installation | 2022 | Active | CO4 |
| RED INSTALLATIONS LIMITED | 43290 · other construction installation | 2010 | Active | CO4 |
| REFFELL ELECTRICAL LTD | 43210 · electrical installation | 2022 | Active | CO4 |
| RESUK LTD | 43210 · electrical installation; 43290 · other construction installation | 2025 | Active | CO4 |
| RIVAL ELECTRICAL LTD | 43210 · electrical installation | 2017 | Active | CO4 |
| RN ELECTRICAL LTD | 43210 · electrical installation | 2017 | Active | CO4 |
| S.C.A.D. BUSINESS LTD | 43290 · other construction installation | 2024 | Active | CO4 |
| SD ELECTRICAL SOLUTIONS LTD | 43210 · electrical installation | 2022 | Active | CO4 |
| SDCOOKELECTRICAL LTD | 43210 · electrical installation | 2023 | Active | CO4 |
| SH ELECTRICAL LONDON LTD | 43210 · electrical installation | 2021 | Active | CO4 |
| SIMPLIVE LTD | 43210 · electrical installation; 47910; 62012; 62020 | 2025 | Active | CO4 |
| SLM HOME IMPROVEMENTS LTD | 43290 · other construction installation | 2024 | Active | CO4 |
| SOLAR PV LTD | 43210 · electrical installation | 2021 | Active | CO4 |
| SOUTHGATE BUILDERS LTD | 43290 · other construction installation | 2025 | Active | CO4 |
| TEST AND CONNECT LTD | 43210 · electrical installation; 42220; 71200 | 2025 | Active | CO4 |
| TROTMAN PROPERTY EVOLUTION LTD | 43210 · electrical installation; 68100 | 2020 | Active | CO4 |
| TSE ELECTRICAL LTD | 43210 · electrical installation | 2018 | Active | CO4 |
| UNITY POWER GROUP LTD | 43210 · electrical installation; 42220 | 2023 | Active | CO4 |
| V&J RENOVATIONS LIMITED | 43290 · other construction installation; 43120; 43310; 43390 | 2020 | Active | CO4 |
| W G ELECTRICS LTD | 43210 · electrical installation; 33140 | 2011 | Active | CO4 |
| WIV GENERATOR SYSTEMS LIMITED | 43210 · electrical installation | 2012 | Active | CO4 |
| ZONE ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2019 | Active | CO4 |
What homes around CO4 need
In CO4 last summer (2026) there were ≈16 nights that stayed above 18 °C — 5 times the 1991–2020 average of 2.9 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
1% of sampled postcodes in CO4 sit in a conservation area (on-record, 1,193 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 CO4, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in CO4, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in CO4, with that district's hot nights and planning rule.