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CO3: plumbing, heating and air-conditioning companies in Colchester
CO3 (Colchester) has 36 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 61 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, CO3 had ≈8 nights above 18 °C in 2026 (4 times the 1991–2020 average of 2.3).
CO3
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A&D PLUMBING SERVICES LTD, incorporated 2017, status Active.
Plumbing, heating and air-conditioning companies
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| A PEARSON ELECTRICAL LIMITED | 43210 · electrical installation | 2009 | Active | CO3 |
| A STAR ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2019 | Active | CO3 |
| A. WATT. ELECTRICAL LTD. | 43210 · electrical installation | 2009 | Active | CO3 |
| A.T.E. FIRE PROTECTION LIMITED | 43290 · other construction installation | 1993 | Active | CO3 |
| AGB SERVICES ANGLIA LIMITED | 43210 · electrical installation; 33140; 95210 | 2013 | Active | CO3 |
| AKL CONSTRUCTION LTD | 43290 · other construction installation | 2017 | Active - Proposal to Strike off | CO3 |
| ALDOUS ELECTRICAL FELIXSTOWE LIMITED | 43210 · electrical installation | 2015 | Active | CO3 |
| ALP BUILDING SERVICES LTD | 43210 · electrical installation; 70229; 74100 | 2024 | Active | CO3 |
| AVA TECH LIGHTING LTD | 43210 · electrical installation; 46470; 71122; 71129 | 2024 | Active | CO3 |
| AVENTI ELECTRICAL LTD | 43210 · electrical installation | 2024 | Active | CO3 |
| AWF ELECTRICAL ENGINEERS LTD | 43210 · electrical installation | 2026 | Active | CO3 |
| AXCESS NETWORKS LTD | 43210 · electrical installation | 2019 | Active | CO3 |
| B&S CONTRACTS LIMITED | 43290 · other construction installation | 2021 | Active | CO3 |
| BELLHOUSE LTD | 43290 · other construction installation | 2015 | Active | CO3 |
| BH ELECTRICAL LIMITED | 43210 · electrical installation | 2007 | Active | CO3 |
| BOWLING GARRARD ELECTRICAL LIMITED | 43210 · electrical installation | 1971 | Liquidation | CO3 |
| BRIAM ELECTRICAL CONTRACTORS LIMITED | 43210 · electrical installation | 2007 | Active | CO3 |
| C & B FRAMES LTD | 43290 · other construction installation | 2018 | Active | CO3 |
| CAHILL CORPORATION LIMITED | 43210 · electrical installation; 43290 · other construction installation; 71129 | 2013 | Active | CO3 |
| CASEY & CO. KITCHENS LTD | 43290 · other construction installation; 74100 | 2020 | Active | CO3 |
| COLCHESTER ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2010 | Liquidation | CO3 |
| CRH ELECTRICAL LIMITED | 43210 · electrical installation | 2010 | Active | CO3 |
| DCB BUILDING SERVICES LTD | 43210 · electrical installation; 71121; 74100 | 2014 | Active | CO3 |
| DELTA T RENEWABLES LIMITED | 43210 · electrical installation | 2011 | Liquidation | CO3 |
| ELITE SOLAR PV LTD | 43210 · electrical installation | 2022 | Active | CO3 |
| ESSEX GARDEN STUDIOS LTD | 43290 · other construction installation | 2020 | Active | CO3 |
| ESSEX RENEWABLE SOLUTIONS LTD | 43290 · other construction installation | 2023 | Active | CO3 |
| FALCON CONTRACTING LTD | 43290 · other construction installation; 43910 | 2020 | Active | CO3 |
| FISHER DUCTWORK SERVICES LTD | 43290 · other construction installation | 2017 | Active - Proposal to Strike off | CO3 |
| FUTURE ELECTRICAL LIMITED | 43210 · electrical installation | 2005 | Active | CO3 |
| HOPKINS & SON (ELECTRICAL) LIMITED | 43210 · electrical installation | 1990 | Active | CO3 |
| IMH PROPERTY MAINTENANCE LTD | 43210 · electrical installation | 2025 | Active | CO3 |
| INTELLIGENT BUILDING SERVICES LIMITED | 43290 · other construction installation | 2017 | Active - Proposal to Strike off | CO3 |
| J D C CONSULTING LTD | 43290 · other construction installation | 2020 | Active | CO3 |
| K & M ROAST INSTALLATIONS LTD | 43210 · electrical installation | 2003 | Active | CO3 |
| KLB SECURITY LTD | 43290 · other construction installation | 2026 | Active | CO3 |
| LEE’S DOUBLE GLAZING LTD | 43290 · other construction installation | 2023 | Active | CO3 |
| LEPPARD & MARTIN LTD | 43210 · electrical installation | 2014 | Active | CO3 |
| LMT ELECTRICAL LTD | 43210 · electrical installation; 43290 · other construction installation | 2024 | Active | CO3 |
| M FULCHER CONTRACTS LIMITED | 43290 · other construction installation | 2026 | Active | CO3 |
| MGS ELECTRICAL INSTALLATIONS LIMITED | 43210 · electrical installation | 2001 | Active | CO3 |
| NEP ELECTRICAL AND BUILDING SERVICES LIMITED | 43210 · electrical installation | 2018 | Active | CO3 |
| NEXA EV CHARGING LTD | 43210 · electrical installation; 35120; 62090 | 2025 | Active | CO3 |
| P.M. ELECTRICAL ESSEX LTD | 43210 · electrical installation | 2017 | Active | CO3 |
| PEGASUS PROJECT PLANNING LTD | 43290 · other construction installation; 41100; 42220; 42990 | 2020 | Active | CO3 |
| PERFECT ROOMS LIMITED | 43290 · other construction installation | 2002 | Active | CO3 |
| POWER DESIGN PROJECTS LIMITED | 43210 · electrical installation | 2004 | Active | CO3 |
| PRO TECH ELECTRICAL (ESSEX) LIMITED | 43210 · electrical installation | 2015 | Active | CO3 |
| PROVIDEX LIMITED | 43210 · electrical installation | 2011 | Active | CO3 |
| PULSE FIRE & SECURITY LTD | 43210 · electrical installation | 2020 | Active | CO3 |
| QUIRK DESIGN & BUILD LIMITED | 43210 · electrical installation | 2006 | Active | CO3 |
| R B INSTALLATIONS (ESSEX) LIMITED | 43290 · other construction installation | 2021 | Active | CO3 |
| R.A. LOCK ELECTRICAL LIMITED | 43210 · electrical installation | 2010 | Active | CO3 |
| SCB ESSEX LIMITED | 43290 · other construction installation | 2026 | Active - Proposal to Strike off | CO3 |
| SIMON'S KITCHENS LTD | 43210 · electrical installation; 43320 | 2009 | Active | CO3 |
| STROYMAX CONSTRUCTION LIMITED | 43290 · other construction installation; 41201; 41202; 43999 | 2021 | Active | CO3 |
| STYNE GREENHOUSES LTD | 43290 · other construction installation | 2022 | Active | CO3 |
| TEC CONSTRUCTION (EAST ANGLIA) LIMITED | 43290 · other construction installation | 2021 | Active | CO3 |
| THOMASELECTICAL LTD | 43210 · electrical installation | 2026 | Active | CO3 |
| THORNTON AND REEVES LTD | 43290 · other construction installation | 2015 | Liquidation | CO3 |
| W INSTALLERS LTD | 43290 · other construction installation | 2023 | Active | CO3 |
What homes around CO3 need
In CO3 last summer (2026) there were ≈8 nights that stayed above 18 °C — 4 times the 1991–2020 average of 2.3 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
10% of sampled postcodes in CO3 sit in a conservation area (on-record, 864 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 CO3, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in CO3, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in CO3, with that district's hot nights and planning rule.