Harrow: plumbing, heating and air-conditioning companies
Harrow has 249 plumbing, heating and air-conditioning companies (SIC 43220) and 457 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 HA1, summer 2026 had ≈12 nights above 18 °C there (8 times the 1991–2020 average of 1.6).
SIC 43220
Open a company
A & D PLUMBING & HEATING LIMITED, incorporated 2020, status Active.
Postcode districts
Plumbing, heating and air-conditioning companies
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| AB DEVELOPER LIMITED | 43290 · other construction installation | 2026 | Active | HA1 |
| AMAZING SURFACES LTD | 43290 · other construction installation | 2012 | Active | HA1 |
| BENDAVE CONSTRUCTION LTD | 43290 · other construction installation | 2024 | Active | HA1 |
| JN CONSTRUCTIONS LTD | 43290 · other construction installation | 2026 | Active | HA1 |
| STONE WORKTOP SURFACES LTD | 43290 · other construction installation | 2026 | Active | HA1 |
| GOLDEN EYE INTEGRATED LTD | 43210 · electrical installation; 33140; 33200; 43999 | 2026 | Active | HA1 |
| STATS ENERGY SOLUTIONS LTD | 43210 · electrical installation; 74909; 96090 | 2025 | Active | HA1 |
| HDT SOLUTIONS LTD | 43210 · electrical installation | 2026 | Active | HA1 |
| JAMAL ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2021 | Active | HA1 |
| BARONS ELECTRICAL LTD | 43210 · electrical installation | 2025 | Active | HA1 |
| SDRYCO LIMITED | 43290 · other construction installation | 2022 | Active | HA1 |
| CC CONTROL & SECURITY LTD | 43210 · electrical installation; 43390; 80200 | 2022 | Active | HA1 |
| AIREBO LIMITED | 43210 · electrical installation; 26511; 62012; 71200 | 2015 | Active | HA1 |
| AMBER GROUP LIMITED | 43290 · other construction installation | 2004 | Active | HA1 |
| ANY TIME ELECTRICIAN LIMITED | 43210 · electrical installation | 2021 | Active | HA1 |
| CPFM CONSTRUCTION LTD | 43290 · other construction installation; 41201; 43390 | 2019 | Active | HA1 |
| E & A WINDOWS LIMITED | 43290 · other construction installation | 2017 | Active | HA1 |
| E.I ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2022 | Active | HA1 |
| GATE CONTROL LIMITED | 43210 · electrical installation | 2009 | Active | HA1 |
| O.A CONTRACTS LTD | 43210 · electrical installation; 62020 | 2024 | Active | HA1 |
| ORAANJ CONSTRUCTION LIMITED | 43290 · other construction installation; 41100; 43390 | 2025 | Active | HA1 |
| WAYSIDE PAVING LTD | 43290 · other construction installation | 2018 | Active | HA1 |
| ARDENT SECURITY LIMITED | 43210 · electrical installation | 1991 | Active | HA1 |
| BLUE ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2007 | Active | HA1 |
| BRIDPORT STOREFITTERS LIMITED | 43210 · electrical installation | 2006 | Active | HA1 |
| CHOTALIA ENGINEERING LIMITED | 43210 · electrical installation | 2016 | Active | HA1 |
| COORVAI LTD | 43290 · other construction installation | 2013 | Active | HA1 |
| DMT SCENERY LIMITED | 43290 · other construction installation | 2018 | Active | HA1 |
| ELECTRICAL CONTRACT SERVICES LIMITED | 43210 · electrical installation | 2024 | Active | HA1 |
| LARFOOT CONSTRUCTION LIMITED | 43290 · other construction installation | 2020 | Active | HA1 |
| LETS MAINTAIN LIMITED | 43210 · electrical installation; 43341; 43390 | 2023 | Active | HA1 |
| LIFESTYLE PODS LIMITED | 43290 · other construction installation | 2020 | Active | HA1 |
| O.C.B. (ELECTRICAL) LIMITED | 43210 · electrical installation | 1985 | Active | HA1 |
| ORION ELECTRICAL INSTALLATIONS LTD | 43210 · electrical installation | 2010 | Active | HA1 |
| ORION ELECTRICALS LIMITED | 43210 · electrical installation | 1993 | Active | HA1 |
| PJL ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2021 | Active | HA1 |
| ST HILLARE ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2003 | Active | HA1 |
| STARTLINE SERVICES LTD | 43210 · electrical installation; 43120 | 2020 | Active | HA1 |
| WOODZ ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2026 | Active | HA1 |
| ORION ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2023 | Active | HA1 |
| NCT ELECTRICAL LTD | 43210 · electrical installation | 2024 | Active | HA1 |
| MS ELECTRICITY SERVICES LTD | 43210 · electrical installation; 43390 | 2025 | Active | HA1 |
| MULLARKEY CONTRACTORS LTD | 43210 · electrical installation | 2015 | Active | HA1 |
| PRODUCTION TECHNICAL SERVICES LIMITED | 43210 · electrical installation | 2014 | Active | HA1 |
| PURE ELECTRICAL SOLUTIONS LIMITED | 43210 · electrical installation | 2017 | Active | HA1 |
| SQUARE MAN LIGHTING SERVICES LIMITED | 43210 · electrical installation | 2014 | Active | HA1 |
| UNIQUE WINDOWS DOORS & CONSERVATORIES LIMITED | 43290 · other construction installation | 2006 | Active | HA1 |
| ZAG CONSTRUCT LTD | 43210 · electrical installation; 41201 | 2025 | Active | HA1 |
| HEXAGON FRAMEWORK LTD | 43290 · other construction installation; 41201 | 2025 | Active | HA1 |
| ILT BUILDING SOLUTIONS LTD | 43290 · other construction installation; 43310; 43390; 43999 | 2026 | Active | HA1 |
| SOLAR4GOOD UK LTD | 43210 · electrical installation | 2020 | Active | HA1 |
| GARDEN PROJECTS DESIGN LTD | 43290 · other construction installation; 81300 | 2021 | Active | HA1 |
| CLASS ONE MAINTENANCE SERVICES LIMITED | 43210 · electrical installation; 43999 | 2006 | Active | HA1 |
| GRB ELECTRICS LIMITED | 43210 · electrical installation | 2013 | Active | HA1 |
| COMBINED ELECTRICALS LIMITED | 43210 · electrical installation | 1993 | Active | HA1 |
| AK BUILDERSS LTD | 43290 · other construction installation; 41202; 43390 | 2021 | Active | HA1 |
| BARBER BUILDING SOLUTIONS LTD | 43290 · other construction installation; 43999 | 2015 | Active | HA1 |
| BARBER PLUMBING SOLUTIONS LIMITED | 43290 · other construction installation; 43999 | 2018 | Active | HA1 |
| BOURNESIDE ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2019 | Active | HA1 |
| EJG CONSTRUCTION LTD | 43290 · other construction installation | 2019 | Active | HA1 |
| KS PROJECTS LONDON LTD | 43210 · electrical installation; 41100; 41202 | 2023 | Active | HA1 |
| LAWSON BUILDING & MAINTENANCE LTD | 43290 · other construction installation | 2012 | Active | HA1 |
| MARVINN COMMERCIAL AND RESIDENTIAL CONSTRUCTION UK LIMITED | 43290 · other construction installation; 41100; 43390; 43999 | 2022 | Active | HA1 |
| CUSTODIAN EVENTS LIMITED | 43290 · other construction installation; 82301 | 2017 | Active | HA1 |
| TRF CONSTRUCTION(UK) LTD | 43290 · other construction installation | 2021 | Active | HA1 |
| BRICKSTONE (U.K.) LTD | 43290 · other construction installation; 41100; 41202; 43390 | 2025 | Active | HA1 |
| VNG INTERIORS LTD | 43290 · other construction installation | 2021 | Active | HA1 |
| FALCON ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2019 | Active | HA1 |
| MORRISSEY ELECTRICAL LIMITED | 43210 · electrical installation | 2019 | Active | HA1 |
| VILLA SHOPFITTERS LTD | 43290 · other construction installation | 2022 | Active | HA1 |
| KARWAN ELECTRICS LIMITED | 43210 · electrical installation | 2021 | Active | HA1 |
| PHASE ELECTRICAL ENGINEERING LTD | 43210 · electrical installation | 2021 | Active | HA1 |
| ANTHONY JAMES ELECTRICAL LTD | 43210 · electrical installation | 2020 | Active | HA1 |
| BRICKLINE CONSTRUCTION LTD | 43290 · other construction installation; 31020 | 2017 | Active | HA1 |
| CARE ACCOMMODATION (LONDON) LIMITED | 43290 · other construction installation; 41202; 68320; 87900 | 2006 | Active | HA1 |
| CARNEY MECHANICAL LTD | 43290 · other construction installation | 2026 | Active | HA1 |
| DAV LIMITED | 43290 · other construction installation | 2025 | Active | HA1 |
| DOMUS PROPERTY MAINTENANCE LTD | 43290 · other construction installation | 2016 | Active | HA1 |
| NORTHGATE DEVELOPMENTS LIMITED | 43290 · other construction installation; 82990 | 2023 | Active | HA1 |
| SAB CST LTD | 43290 · other construction installation | 2016 | Active | HA1 |
| SARUNAS KLIMAVICIUS JOINERY LTD | 43290 · other construction installation | 2019 | Active | HA1 |
| STONEBRIDGE WORKS LIMITED | 43290 · other construction installation | 2026 | Active | HA1 |
| VBD LIMITED | 43290 · other construction installation | 2026 | Active | HA1 |
| TBK CONSTRUCTION LTD | 43210 · electrical installation; 41201; 41202; 43320 | 2025 | Active | HA1 |
| BULIDX LTD | 43290 · other construction installation; 43999 | 2025 | Active | HA1 |
| ACH PROJECT MANAGEMENT LIMITED | 43210 · electrical installation | 2017 | Active | HA1 |
| BCW LIGHTING LIMITED | 43210 · electrical installation | 2011 | Active | HA1 |
| BD LIGHTING LIMITED | 43210 · electrical installation | 2012 | Active | HA1 |
| CAMDEN CABLES LTD | 43210 · electrical installation | 2023 | Active | HA1 |
| CC SOURCING & SERVICES LIMITED | 43210 · electrical installation; 43999 | 2021 | Active | HA1 |
| HILLECTRICS LIMITED | 43210 · electrical installation | 2014 | Active | HA1 |
| JC ELECTRICS 35 LIMITED | 43210 · electrical installation | 2022 | Active | HA1 |
| JD WELL LIMITED | 43290 · other construction installation | 2013 | Active | HA1 |
| JH LIGHTING LIMITED | 43210 · electrical installation | 2014 | Active | HA1 |
| K.C. CONSTRUCTION LTD | 43290 · other construction installation; 41202; 43320; 47990 | 2018 | Active | HA1 |
| MJA ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2021 | Active | HA1 |
| NXT GEN ELECTRICAL LTD | 43210 · electrical installation | 2022 | Active | HA1 |
| P.GAILEY SERVICES LIMITED | 43210 · electrical installation | 2024 | Active | HA1 |
| S.J.R ELEC & MECH SERVICES LTD | 43210 · electrical installation | 2021 | Active | HA1 |
| SWORD ELECTRICAL LIMITED | 43210 · electrical installation | 2022 | Active | HA1 |
Heat and planning around Harrow
In Harrow last summer (2026) there were ≈11.7 nights that stayed above 18 °C — 7 times the 1991–2020 average of 1.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities). The figure is the household-weighted mean of 4 postcode districts where these offices are registered.
8% of sampled postcodes in Harrow sit in a conservation area (3,900 live postcodes across 4 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.