Home / Installers / Harrow
HA3: plumbing, heating and air-conditioning companies in Harrow
HA3 (Harrow) has 96 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 179 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, HA3 had ≈12 nights above 18 °C in 2026 (8 times the 1991–2020 average of 1.6).
HA3
Open a company
ACC MECHANICAL LTD, incorporated 2019, status Active - Proposal to Strike off.
Plumbing, heating and air-conditioning companies
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| A R INSTALLATION LTD | 43210 · electrical installation | 2019 | Active | HA3 |
| A SPARK INVEST LTD | 43290 · other construction installation; 68320; 98000 | 2026 | Active | HA3 |
| AA AUTO ELECTRICS LTD | 43210 · electrical installation; 29310 | 2023 | Active - Proposal to Strike off | HA3 |
| AA ELECTRICIAN LTD | 43210 · electrical installation | 2025 | Active | HA3 |
| AC ELECTRICAL CONTRACTS (UK) LTD | 43210 · electrical installation | 2008 | Active | HA3 |
| ACE ELECTRICIANS LIMITED | 43210 · electrical installation | 2017 | Active | HA3 |
| ACS CONSTRUCTION & SERVICES LTD | 43290 · other construction installation; 41201; 41202; 81299 | 2019 | Active | HA3 |
| ADROIT BESPOKE LTD | 43290 · other construction installation; 41100 | 2023 | Active | HA3 |
| AKSHAR SERVICES LTD | 43210 · electrical installation | 2016 | Active | HA3 |
| ALEX&CO LTD | 43210 · electrical installation; 41100 | 2017 | Active | HA3 |
| ALFA SPRINKLER LTD | 43290 · other construction installation | 2025 | Active | HA3 |
| ALIVAS ELECTRICAL SERVICES LTD | 43210 · electrical installation; 41100 | 2025 | Active | HA3 |
| ALKHATEEB GROUP LIMITED | 43290 · other construction installation; 49420 | 2024 | Active | HA3 |
| ALPHA AIR HANDLING SERVICES LTD | 43210 · electrical installation; 71129 | 2021 | Active | HA3 |
| ALPHA ELECTRIX LTD | 43210 · electrical installation | 2019 | Active | HA3 |
| ARDELELEANU LTD | 43290 · other construction installation; 41201; 41202 | 2020 | Active | HA3 |
| ASH CONSTRUCTION SOLUTIONS LIMITED | 43290 · other construction installation | 2015 | Active | HA3 |
| ASICON LTD | 43290 · other construction installation; 41201; 41202 | 2026 | Active | HA3 |
| AVRAMY CONSTRUCTION LTD | 43290 · other construction installation | 2025 | Active | HA3 |
| AVS PROJECTS LIMITED | 43210 · electrical installation | 2019 | Active | HA3 |
| BATHING CARE LTD | 43290 · other construction installation | 2023 | Active | HA3 |
| BC COMMS LIMITED | 43290 · other construction installation; 61900 | 2018 | Active | HA3 |
| BESPOKE COMPONENTS LIMITED | 43290 · other construction installation | 2024 | Active | HA3 |
| BHARTI ENTERPRISE LTD | 43290 · other construction installation | 2010 | Active | HA3 |
| BIM CONSTRUCTION LTD | 43290 · other construction installation | 2023 | Active | HA3 |
| BROOKE ELECTRICAL INSTALLATIONS LIMITED | 43210 · electrical installation | 2021 | Active | HA3 |
| BUILDING WAY LIMITED | 43290 · other construction installation; 41201; 41202 | 2023 | Active | HA3 |
| C & A ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2008 | Active | HA3 |
| C&T CONSTRUCTION LTD | 43290 · other construction installation; 41201; 41202; 43999 | 2023 | Active | HA3 |
| CARCEA LTD | 43290 · other construction installation; 43390 | 2013 | Active | HA3 |
| CDF RENEWAL LTD | 43210 · electrical installation; 43290 · other construction installation | 2019 | Active | HA3 |
| CG POWER SERVICES LTD | 43210 · electrical installation; 43390 | 2025 | Active | HA3 |
| CHADLEY ELECTRICAL LTD | 43210 · electrical installation; 33140 | 2024 | Active | HA3 |
| CHERRY & JERRY UK LTD | 43210 · electrical installation | 2022 | Active | HA3 |
| CIP PLASTERING & DECORATING LTD | 43290 · other construction installation; 43310 | 2023 | Active | HA3 |
| CIUREA LIMITED | 43290 · other construction installation; 42110; 43999 | 2025 | Active | HA3 |
| COJO DRYLINING LTD | 43290 · other construction installation | 2022 | Active - Proposal to Strike off | HA3 |
| COLIEMORE ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2018 | Active | HA3 |
| COMPLETEHOME PROJECTS LTD | 43290 · other construction installation; 41201; 41202 | 2022 | Active | HA3 |
| CONSTRUCTION DM LTD | 43290 · other construction installation | 2024 | Active | HA3 |
| CORVEX NETWORK LTD | 43210 · electrical installation | 2026 | Active | HA3 |
| DASHLA ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2014 | Active - Proposal to Strike off | HA3 |
| DDP94 LTD | 43290 · other construction installation; 41202 | 2026 | Active | HA3 |
| DEEA LIMITED | 43290 · other construction installation | 2008 | Active - Proposal to Strike off | HA3 |
| DHAN FIRE AND ELECTRICAL LIMITED | 43210 · electrical installation; 84250 | 2021 | Active | HA3 |
| DHYAN ENTERPRISES LIMITED | 43210 · electrical installation | 2014 | Active | HA3 |
| DIMA DRYLINING TEAM LTD | 43290 · other construction installation | 2016 | Active | HA3 |
| DIP TILING LTD | 43290 · other construction installation; 41201; 41202; 43320 | 2025 | Active | HA3 |
| DLG CONSTRUCT LTD | 43290 · other construction installation; 41202; 49410 | 2026 | Active | HA3 |
| DOMESTIC INSTALLATIONS LDN LIMITED | 43290 · other construction installation | 2022 | Active | HA3 |
| DOWNTOWN CONSTRUCTIONS LIMITED | 43290 · other construction installation; 41202; 43390 | 2023 | Active | HA3 |
| DUDUTA CONSTRUCTION LTD | 43290 · other construction installation | 2025 | Active | HA3 |
| DWELLING INTERIORS LIMITED | 43290 · other construction installation | 2007 | Active | HA3 |
| E.R.M ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2025 | Active - Proposal to Strike off | HA3 |
| EAGLE EYE ELECTRICAL LTD | 43210 · electrical installation; 33140 | 2019 | Active | HA3 |
| EAGLE LIGHTING ELECTRICAL LTD | 43210 · electrical installation | 2021 | Active | HA3 |
| ELEC.IP LIMITED | 43210 · electrical installation | 2024 | Active | HA3 |
| ENTIRE FIRE SAFETY LTD | 43210 · electrical installation; 43290 · other construction installation; 33140; 84250 | 2025 | Active | HA3 |
| ERAC CONSTRUCTION LTD | 43210 · electrical installation; 43341; 43910 | 2023 | Active | HA3 |
| ESCALADE SOLUTIONS LTD | 43210 · electrical installation | 2021 | Active | HA3 |
| EXTENDOPEDIA LTD | 43290 · other construction installation; 41201; 47990; 71111 | 2025 | Active | HA3 |
| FIELDBROOK LIMITED | 43290 · other construction installation | 2001 | Active | HA3 |
| FIRST TILES SERVICES LTD | 43290 · other construction installation | 2023 | Active | HA3 |
| FIXOD LIMITED | 43290 · other construction installation | 2026 | Active | HA3 |
| FORUM CONSULTANCY LIMITED | 43290 · other construction installation; 41100; 43120; 43130 | 2020 | Active | HA3 |
| FUTTURE LTD | 43210 · electrical installation; 41202 | 2015 | Active - Proposal to Strike off | HA3 |
| FVS ELECTRICAL LIMITED | 43210 · electrical installation | 2021 | Active | HA3 |
| G&M CLEANING CONSTRUCTION LTD | 43290 · other construction installation; 43341; 81299 | 2022 | Active | HA3 |
| GABRIEL DANIEL ELECTRICALS LTD | 43210 · electrical installation | 2017 | Active | HA3 |
| GG DECORATORS LTD | 43290 · other construction installation | 2023 | Active | HA3 |
| GOLDMMR SRI LTD | 43290 · other construction installation; 41202 | 2021 | Active | HA3 |
| GREENWAY ENERGY LTD | 43210 · electrical installation | 2023 | Active | HA3 |
| GROUND WORKER SOLUTIONS LTD | 43290 · other construction installation; 43999 | 2024 | Active | HA3 |
| HARROW FIRE SYSTEM LIMITED | 43210 · electrical installation; 80200 | 2020 | Active | HA3 |
| HIRANI ELECTRICAL LTD | 43210 · electrical installation | 2024 | Active | HA3 |
| HO ELECTRICAL LTD | 43210 · electrical installation | 2025 | Active | HA3 |
| HOMETECT LTD | 43210 · electrical installation; 80200 | 2022 | Active | HA3 |
| HOMIX LTD | 43290 · other construction installation; 41202; 43341 | 2025 | Active | HA3 |
| IC TECHNICAL SOLUTION LTD | 43210 · electrical installation; 43290 · other construction installation; 43999 | 2024 | Active | HA3 |
| ICAB BUILDERS LTD | 43290 · other construction installation; 43390 | 2018 | Active | HA3 |
| ISOTOPE JSC LIMITED | 43210 · electrical installation; 27120; 43910; 46520 | 2025 | Active | HA3 |
| JC INSTALLS LIMITED | 43210 · electrical installation | 2016 | Active | HA3 |
| JMJ PVT LTD LIMITED | 43290 · other construction installation | 2026 | Active | HA3 |
| JSN PROPERTY SERVICES LTD | 43290 · other construction installation; 43390; 43999 | 2024 | Active | HA3 |
| JSPARK ELECTRICS LTD | 43210 · electrical installation | 2024 | Active | HA3 |
| KELLEHER'S ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2024 | Active | HA3 |
| KIM ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2025 | Active | HA3 |
| KINGSTON FIRE AND ELECTRICAL LTD | 43210 · electrical installation | 2009 | Active | HA3 |
| KK CONSTRUCT LTD | 43290 · other construction installation; 41202 | 2025 | Active | HA3 |
| KUVARJI & SONS LTD | 43210 · electrical installation; 41100 | 2013 | Active | HA3 |
| LG FENCING LIMITED | 43290 · other construction installation | 2020 | Active | HA3 |
| LINEIT LTD | 43290 · other construction installation; 43390 | 2025 | Active | HA3 |
| LTP ELECTRIC LTD | 43210 · electrical installation | 2024 | Active | HA3 |
| M M S CONTRACTS (LONDON) LIMITED | 43210 · electrical installation | 2011 | Liquidation | HA3 |
| MAGNUS FIRE LTD | 43210 · electrical installation; 43999 | 2017 | Active | HA3 |
| MATART LTD | 43290 · other construction installation | 2021 | Active | HA3 |
| MAXAMAZE LED LTD | 43210 · electrical installation | 2024 | Active | HA3 |
| MAXIN LANDSCAPES LTD | 43290 · other construction installation; 41202; 81300 | 2020 | Active | HA3 |
| MAYCOR BUILDING SERVICES LIMITED | 43290 · other construction installation; 41100; 43390; 81100 | 2017 | Active - Proposal to Strike off | HA3 |
| MCMANAMON ELECTRICAL LTD | 43210 · electrical installation | 2021 | Active - Proposal to Strike off | HA3 |
| MEPANI ELECTRICAL (LONDON) LIMITED | 43210 · electrical installation | 2024 | Active | HA3 |
| MEPANI ELECTRICAL LIMITED | 43210 · electrical installation | 1997 | Active | HA3 |
| MIDTOWN SOLUTION LTD | 43210 · electrical installation; 80200 | 2026 | Active | HA3 |
| MIKE BUSSELL LIMITED | 43210 · electrical installation | 2014 | Active | HA3 |
| MISTRY ELECTRICAL TESTING LIMITED | 43210 · electrical installation | 2014 | Active | HA3 |
| MIX LIGHTING LTD | 43210 · electrical installation | 2015 | Active | HA3 |
| MJ&S ELECTRICAL LTD | 43210 · electrical installation | 2016 | Active | HA3 |
| MM BUILDING SOLUTIONS LTD | 43290 · other construction installation | 2023 | Active | HA3 |
| MNC ECO ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2022 | Active | HA3 |
| MSPC CONSTRUCTION LTD | 43290 · other construction installation; 41202; 43320; 43999 | 2022 | Active | HA3 |
| NECULA LTD | 43290 · other construction installation | 2014 | Active | HA3 |
| NIC CIVIL ENGINEERING LTD | 43290 · other construction installation; 42990 | 2023 | Active | HA3 |
| NORTH STAR LONDON LTD | 43210 · electrical installation; 43290 · other construction installation; 41202; 47599 | 2016 | Active | HA3 |
| NOZALARI LIMITED | 43210 · electrical installation | 2026 | Active | HA3 |
| O CLARKS LTD | 43210 · electrical installation | 2014 | Active | HA3 |
| OMKO LTD | 43290 · other construction installation; 41202 | 2025 | Active | HA3 |
| OVA ELECTRICAL LIMITED | 43210 · electrical installation | 2017 | Active | HA3 |
| OVIPROCONSTRUCT LTD | 43290 · other construction installation; 41201; 41202; 43999 | 2020 | Active | HA3 |
| PAMASH CONTRUCTION LTD | 43290 · other construction installation; 41202 | 2025 | Active | HA3 |
| PCN ELECTRICAL LTD | 43210 · electrical installation; 41202 | 2018 | Active - Proposal to Strike off | HA3 |
| PDM1 LTD | 43290 · other construction installation; 43999 | 2025 | Active - Proposal to Strike off | HA3 |
| PHOTOSYMPHONY LTD | 43210 · electrical installation; 59200; 68100 | 2012 | Active | HA3 |
| POWER ELECTRICAL CONNECTION LTD | 43210 · electrical installation | 2021 | Active | HA3 |
| POWER RANGERS LTD | 43210 · electrical installation | 2017 | Active | HA3 |
| POWER UP ELECTRICIANS LTD | 43210 · electrical installation | 2023 | Active - Proposal to Strike off | HA3 |
| PRECISION POINT ENGINEERING LTD | 43290 · other construction installation; 41201; 71129 | 2024 | Active | HA3 |
| PREM ELECTRICALS LTD | 43210 · electrical installation | 2011 | Active | HA3 |
| PRISACARIU LTD | 43290 · other construction installation; 43390 | 2013 | Active | HA3 |
| R K BUILDER & SHOPFITTERS LTD | 43290 · other construction installation | 2025 | Active | HA3 |
| R&C ELECTRICAL AND PROPERTY SERVICES LTD | 43210 · electrical installation; 81299; 96090 | 2025 | Active | HA3 |
| RAJVAR FACILITY MANAGEMENT LTD | 43290 · other construction installation; 81100 | 2025 | Active | HA3 |
| RAJVAR TECHNOLOGIES LIMITED | 43210 · electrical installation | 2007 | Active | HA3 |
| RAMA ELECTRICAL LIMITED | 43210 · electrical installation | 2016 | Active | HA3 |
| RANHAR ENGINEERING LIMITED | 43210 · electrical installation | 2018 | Active | HA3 |
| RBD ELECTRICAL LTD | 43210 · electrical installation | 2020 | Active | HA3 |
| RIGHT MECHANICAL SOLUTIONS LTD | 43290 · other construction installation | 2012 | Active | HA3 |
| ROBERT ENGLISH ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2006 | Active - Proposal to Strike off | HA3 |
| RONIK ELECTRICAL LIMITED | 43210 · electrical installation | 2015 | Active | HA3 |
| ROSS ELECTRICAL (UK) SERVICES LIMITED | 43210 · electrical installation | 2011 | Active | HA3 |
| ROX INTERIORS LIMITED | 43290 · other construction installation; 43320; 43342; 43390 | 2009 | Active | HA3 |
| RUS CONSTRUCTION LTD | 43210 · electrical installation; 43999 | 2021 | Active | HA3 |
| S6MKE LIMITED | 43210 · electrical installation | 2016 | Active | HA3 |
| SANJ ELECTRICAL TECHNOLOGY LTD | 43210 · electrical installation | 2025 | Active | HA3 |
| SAVANI ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2015 | Active | HA3 |
| SEC CONTRACTING LTD | 43210 · electrical installation | 2020 | Active | HA3 |
| SHADOW UTILITIES LTD | 43210 · electrical installation | 2013 | Active | HA3 |
| SHAM BUILDING LIMITED | 43290 · other construction installation; 41202; 43999 | 2021 | Active | HA3 |
| SHOBBY CONSTRUCT LTD | 43290 · other construction installation | 2025 | Active | HA3 |
| SILVERBACK FIT LTD | 43290 · other construction installation; 93130 | 2018 | Active - Proposal to Strike off | HA3 |
| SLF LOCKSMITHS AND CARPENTRY LTD | 43290 · other construction installation | 2022 | Active | HA3 |
| SMART BRIGHT LIGHT LTD | 43210 · electrical installation; 47540; 61100; 62020 | 2024 | Active | HA3 |
| SMART CORD ELECTRICALS LTD | 43210 · electrical installation | 2018 | Active | HA3 |
| SOLARTRIC SOLUTIONS LTD | 43210 · electrical installation; 43290 · other construction installation | 2025 | Active | HA3 |
| SP FIRE LIMITED | 43210 · electrical installation; 84250 | 2017 | Active | HA3 |
| SPENRIG SERVICES LIMITED | 43210 · electrical installation; 43999 | 2024 | Active | HA3 |
| SSC ASSETS LTD | 43210 · electrical installation | 2022 | Active | HA3 |
| SSG BUILDERS LTD | 43290 · other construction installation | 2015 | Active | HA3 |
| STELLASELLER LTD | 43290 · other construction installation | 2018 | Active - Proposal to Strike off | HA3 |
| STR&DRA LTD | 43290 · other construction installation; 41201; 41202; 42110 | 2024 | Active | HA3 |
| SUPER CONSTRUCTION LIMITED | 43290 · other construction installation; 68209 | 2015 | Active | HA3 |
| TGS BUILDING LTD | 43290 · other construction installation | 2019 | Active - Proposal to Strike off | HA3 |
| THREE WAYS ELECTRICAL SOLUTIONS LTD | 43210 · electrical installation; 43390; 43999 | 2009 | Active | HA3 |
| TIMOTHEUS ENGINEERING LTD | 43210 · electrical installation; 43290 · other construction installation | 2025 | Active | HA3 |
| TML UTILITY LTD | 43290 · other construction installation; 42110 | 2022 | Active | HA3 |
| TONY G ELECTRICAL LTD | 43210 · electrical installation | 2024 | Active | HA3 |
| UGO SPARKK LTD | 43210 · electrical installation; 41202 | 2025 | Active | HA3 |
| UNIQ ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2021 | Active | HA3 |
| UNISCO LIMITED | 43290 · other construction installation | 2005 | Active | HA3 |
| UNITED BROTHERS 24 LTD | 43290 · other construction installation; 49390 | 2024 | Active | HA3 |
| UNIVERSAL INTERIORS (UK) LIMITED | 43290 · other construction installation | 2005 | Active | HA3 |
| V A ELECTRICAL & CONTRACTORS LIMITED | 43210 · electrical installation | 2018 | Active | HA3 |
| V.N.ELECTRICALS LTD | 43210 · electrical installation; 82990 | 2017 | Active | HA3 |
| VALNEX LTD | 43210 · electrical installation; 33190; 33200; 47890 | 2024 | Active | HA3 |
| VASPA LIMITED | 43290 · other construction installation; 43342 | 1987 | Active | HA3 |
| VNT CONSTRUCTION LTD | 43290 · other construction installation; 43999 | 2026 | Active | HA3 |
| YLYUTZA URSACHI LTD | 43290 · other construction installation | 2023 | Active | HA3 |
| ZATILA CONSTRUCT LTD | 43290 · other construction installation; 41201; 41202 | 2023 | Active | HA3 |
| ZDIRCEA CONSTRUCTION LTD | 43290 · other construction installation; 43310; 81210 | 2020 | Active | HA3 |
| ZENIT EDGE LTD | 43290 · other construction installation | 2025 | Active | HA3 |
What homes around HA3 need
In HA3 last summer (2026) there were ≈12 nights that stayed above 18 °C — 8 times the 1991–2020 average of 1.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
4% of sampled postcodes in HA3 sit in a conservation area (on-record, 1,261 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 HA3, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in HA3, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in HA3, with that district's hot nights and planning rule.