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CO1: plumbing, heating and air-conditioning companies in Colchester
CO1 (Colchester) has 14 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 24 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, CO1 had ≈16 nights above 18 °C in 2026 (5 times the 1991–2020 average of 2.9).
CO1
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BUXERVE LTD, incorporated 2013, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| BUXERVE LTD | 2013 | Active | CO1 |
| ELSAR LIMITED | 2012 | Active | CO1 |
| EST KÜHLUNG LTD | 2026 | Active | CO1 |
| G W COMMERCIAL HEATING LTD | 2013 | Active | CO1 |
| J. H. HELLEN PLUMBING & HEATING LIMITED | 2009 | Active | CO1 |
| L. W. MAY AND SON (P&H) LIMITED | 2007 | Active | CO1 |
| MOS PLUMBING AND HEATING SERVICES LTD | 2021 | Active | CO1 |
| OPEN PLAN INSTALLATIONS LTD | 2021 | Active | CO1 |
| PRIMEHEAT & PLUMBING LTD | 2026 | Active | CO1 |
| REPAIR SOLUTIONS GROUP LTD | 2011 | Active | CO1 |
| S & S HEATING AND PLUMBING LTD | 2013 | Active | CO1 |
| SCAF PLUMBING & HEATING LIMITED | 2022 | Active | CO1 |
| TATAM CONTRACTS LTD | 2024 | Active | CO1 |
| YOUNG'S MECHANICAL SERVICES LIMITED | 2017 | Active | CO1 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| BRC CONSTRUCTION 2025 LTD | 43290 · other construction installation | 2025 | Active | CO1 |
| BRC PROJECTS LIMITED | 43290 · other construction installation | 2016 | Active | CO1 |
| BROTON CONSTRUCTION LIMITED | 43290 · other construction installation | 2018 | Active | CO1 |
| CL AND STEELS LTD | 43290 · other construction installation | 2026 | Active | CO1 |
| D HARVEY FIRE LTD | 43290 · other construction installation | 2022 | Active | CO1 |
| DESIGNDD CONSTRUCTION LTD | 43290 · other construction installation | 2020 | Active | CO1 |
| DISCOVERY DEVELOPMENTS LTD | 43290 · other construction installation; 41100; 41202; 43120 | 2018 | Active | CO1 |
| DJP HOME IMPROVEMENTS LTD | 43290 · other construction installation; 43310; 43330; 43341 | 2025 | Active | CO1 |
| ESSEX FITTERS COLCHESTER LTD | 43290 · other construction installation; 43390 | 2017 | Active | CO1 |
| EV EXCAVATIONS LIMITED | 43210 · electrical installation | 2024 | Active | CO1 |
| G A TOTAL HOME IMPROVEMENTS LIMITED | 43290 · other construction installation | 2013 | Active | CO1 |
| GROUNDED CONTRACTING LTD | 43210 · electrical installation; 80100 | 2024 | Active | CO1 |
| HUSSAR LIGHTNING PROTECTION LTD | 43210 · electrical installation; 43290 · other construction installation; 43999 | 2020 | Active | CO1 |
| JCJ ELECTRICS LIMITED | 43210 · electrical installation | 2010 | Active | CO1 |
| MMIG ENGINEERING LIMITED | 43290 · other construction installation; 68209; 70229; 71122 | 2022 | Active | CO1 |
| O'HARE INSTALLATIONS LIMITED | 43290 · other construction installation | 2025 | Active | CO1 |
| OPEN PLAN RENOVATION LTD | 43290 · other construction installation; 41202; 43390; 43999 | 2020 | Active | CO1 |
| P.C.S. (PROJECTS) LIMITED | 43210 · electrical installation | 2003 | Active | CO1 |
| R & A FLOORS LIMITED | 43290 · other construction installation | 2016 | Active - Proposal to Strike off | CO1 |
| SOS ELECTRICAL LIMITED | 43210 · electrical installation | 2024 | Active | CO1 |
| STONARD ELECTRICAL LIMITED | 43210 · electrical installation | 2020 | Active | CO1 |
| SUFFOLK CONSTRUCTION PARTNERS LIMITED | 43290 · other construction installation | 2013 | Active - Proposal to Strike off | CO1 |
| THE ELIO GROUP LTD | 43210 · electrical installation; 96090 | 2019 | Active | CO1 |
| THE REALLY SAFE FLOORING COMPANY LIMITED | 43290 · other construction installation; 43330 | 1999 | Active | CO1 |
What homes around CO1 need
In CO1 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).
45% of sampled postcodes in CO1 sit in a conservation area (on-record, 591 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 CO1, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in CO1, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in CO1, with that district's hot nights and planning rule.