Hertford: plumbing, heating and air-conditioning companies
Hertford has 70 plumbing, heating and air-conditioning companies (SIC 43220) and 100 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 SG14, summer 2026 had ≈11 nights above 18 °C there (7 times the 1991–2020 average of 1.6).
SIC 43220
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ACUMEN MECHANICAL ELECTRICAL CONSTRUCTION LTD, incorporated 2020, status Active.
Plumbing, heating and air-conditioning companies
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| MBI INDUSTRIAL SERVICES LTD | 43210 · electrical installation; 43290 · other construction installation | 2024 | Active | SG14 |
| AMOLEC ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2021 | Active | SG14 |
| BADGER CONTROLS LIMITED | 43210 · electrical installation | 2001 | Active | SG14 |
| BRIXTON TRADE SERVICES LTD | 43210 · electrical installation | 2025 | Active | SG14 |
| BROADWATER ELECTRICAL LTD | 43210 · electrical installation | 2021 | Active | SG14 |
| CERROMAR SOLUTIONS LTD | 43290 · other construction installation; 43390 | 2020 | Active | SG14 |
| CHASE AUTOMATION LTD | 43290 · other construction installation | 2020 | Active | SG14 |
| CNM PROJECT LTD | 43210 · electrical installation; 43290 · other construction installation; 80200 | 2023 | Active | SG14 |
| CUSTOM BUILD ELECTRICAL LIMITED | 43210 · electrical installation | 2024 | Active | SG14 |
| D K L ELECTRICAL LIMITED | 43210 · electrical installation | 2010 | Active | SG14 |
| DPK MAINTENANCE LIMITED | 43290 · other construction installation | 2022 | Active | SG14 |
| ELITE VENTILATION ENGINEERING LIMITED | 43210 · electrical installation | 2019 | Active | SG14 |
| FRONT LINE CONTRACTORS UK LIMITED | 43290 · other construction installation | 2024 | Active | SG14 |
| GRANGE STABLES LIMITED | 43290 · other construction installation | 2018 | Active | SG14 |
| GROUND SOURCE DRAINAGE LIMITED | 43290 · other construction installation | 2023 | Active | SG14 |
| GROUNDSOURCE GROUP LIMITED | 43290 · other construction installation | 2021 | Active | SG14 |
| HARRISON HAYES VENTILATION LIMITED | 43290 · other construction installation | 2015 | Active | SG14 |
| HAYWINDOWS LIMITED | 43290 · other construction installation | 2020 | Active | SG14 |
| ICN ELECTRICAL LTD | 43210 · electrical installation | 2014 | Active | SG14 |
| INDUSTRIAL SUPPORT LIMITED | 43210 · electrical installation | 2017 | Active | SG14 |
| INSUP LIMITED | 43210 · electrical installation | 2025 | Active | SG14 |
| INT ELECTRICAL LTD | 43210 · electrical installation | 2023 | Active | SG14 |
| INTEGRITYAPPLIANCEINSTALLATION LTD | 43210 · electrical installation | 2023 | Active | SG14 |
| INTOR DESIGN LIMITED | 43210 · electrical installation | 2006 | Active | SG14 |
| J H ELECTRICAL INSTALLATIONS LIMITED | 43210 · electrical installation | 2019 | Active | SG14 |
| JF SERVICES & CONTRACTING LTD | 43290 · other construction installation; 42990 | 2025 | Active | SG14 |
| JLB CONSTRUCTION LIMITED | 43290 · other construction installation | 2026 | Active | SG14 |
| JW ELECTRICAL SOLUTIONS LIMITED | 43210 · electrical installation | 2010 | Active | SG14 |
| MODUS PROPERTY SERVICES LIMITED | 43290 · other construction installation | 2012 | Active | SG14 |
| OLSEEN ROOFING LTD | 43210 · electrical installation | 2015 | Active | SG14 |
| ONYX ELECTRICAL SOLUTIONS LIMITED | 43210 · electrical installation | 2022 | Active | SG14 |
| P M P ROOFING SERVICES LTD | 43210 · electrical installation | 2015 | Active | SG14 |
| PREFERRED ACOUSTICS AND DESIGN LIMITED | 43290 · other construction installation | 2022 | Active | SG14 |
| PREMIER ROOFING (LONDON) LTD | 43210 · electrical installation | 2014 | Active | SG14 |
| R S DRAINAGE SOLUTIONS LIMITED | 43290 · other construction installation | 2025 | Active | SG14 |
| RH SPLICERS LTD | 43210 · electrical installation | 2012 | Active | SG14 |
| SHARP STONE GRANITE LIMITED | 43210 · electrical installation | 2018 | Active | SG14 |
| SJ ELECTRICAL CONTRACTORS LIMITED | 43210 · electrical installation | 2019 | Active | SG14 |
| SMARTLINE KITCHENS LTD | 43290 · other construction installation | 2019 | Active | SG14 |
| THE HERTFORD GROUP LTD | 43290 · other construction installation | 2018 | Active | SG14 |
| DATUM POINT ELECTRICAL LTD | 43210 · electrical installation | 2020 | Active | SG14 |
| TITAN GROUP LTD | 43210 · electrical installation | 2019 | Active | SG14 |
| ONEZONE LONDON LTD | 43210 · electrical installation | 2012 | Active | SG14 |
| MBI CONTRACTORS LTD | 43210 · electrical installation; 43290 · other construction installation | 2017 | Active | SG14 |
| CURTECH SERVICES LIMITED | 43210 · electrical installation | 2007 | Active | SG14 |
| KMPM LIMITED | 43290 · other construction installation | 2017 | Active | SG14 |
| PETER ROBINSON ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2014 | Active | SG14 |
| EASTERN SERVICES UK LIMITED | 43210 · electrical installation | 1997 | Active | SG14 |
| MM ELECTRICS LIMITED | 43210 · electrical installation | 2024 | Active | SG14 |
| EVERYONE'S ENERGY UK LIMITED | 43290 · other construction installation | 2019 | Active | SG13 |
| EVERYONE’S ENERGY SOUTH LTD | 43290 · other construction installation; 33190 | 2023 | Active | SG13 |
| AMWELL ELECTRICAL LIMITED | 43210 · electrical installation; 46520 | 1975 | Active | SG13 |
| DOI GROUP LIMITED | 43290 · other construction installation; 43390 | 1997 | Active | SG13 |
| KINGSWAY COMMERCIAL INTERIORS LIMITED | 43290 · other construction installation | 2001 | Active | SG13 |
| CUMMINGS SERVICES LIMITED | 43290 · other construction installation | 2024 | Active | SG13 |
| ALSTROM LIMITED | 43290 · other construction installation | 2017 | Active | SG13 |
| BBD ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2017 | Active | SG13 |
| NEXUM FIRE & SECURITY LIMITED | 43210 · electrical installation | 2026 | Active | SG13 |
| JKN ELECTRICAL LIMITED | 43210 · electrical installation | 2020 | Active | SG13 |
| BE TECHNICAL SERVICES LTD | 43210 · electrical installation | 2025 | Active | SG13 |
| BULLRIG ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2026 | Active | SG13 |
| HOME ENHANCE LTD | 43210 · electrical installation; 43390 | 2026 | Active | SG13 |
| PREMIERE ELECTRO-MECHANICAL SERVICES LIMITED | 43210 · electrical installation | 2005 | Active | SG13 |
| C.LINGI ELECTRICAL LTD | 43210 · electrical installation | 2023 | Active | SG13 |
| COJO INTERIORRSS LIMITED | 43210 · electrical installation; 33200; 46690; 71122 | 2019 | Active | SG14 |
| SDT GROUP LTD | 43210 · electrical installation; 41100; 41202; 43999 | 2025 | Active | SG13 |
| TOPSEC LIMITED | 43290 · other construction installation; 41202; 43120; 43999 | 2025 | Active | SG13 |
| BE.ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2014 | Active | SG14 |
| DRAGHICI BUILD LTD | 43290 · other construction installation | 2025 | Active | SG13 |
| EPPING SOLUTIONS LTD | 43210 · electrical installation | 2017 | Active | SG13 |
| JONES ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2015 | Active | SG14 |
| NEW IMAGE INSTALLATION LTD | 43290 · other construction installation; 43330 | 2023 | Active | SG14 |
| OAKSBUILD LIMITED | 43290 · other construction installation | 2019 | Active | SG13 |
| PRIME PROTECTION UK LTD | 43290 · other construction installation; 81100 | 2014 | Active | SG14 |
| ALPIN ENGINEERING LTD | 43210 · electrical installation | 2024 | Active | SG14 |
| DMG DESIGN SERVICES LTD | 43210 · electrical installation | 2024 | Active | SG13 |
| HEATHER LONDON LIMITED | 43290 · other construction installation; 41100; 43390; 81300 | 2022 | Active | SG14 |
| POTENTIAL ENERGY RENEWABLES LTD | 43210 · electrical installation | 2024 | Active | SG13 |
| STOW SPARKS CO LTD | 43210 · electrical installation | 2025 | Active | SG14 |
| HG ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2026 | Active | SG14 |
| MGL PROJECTS LIMITED | 43290 · other construction installation; 43390; 71111 | 2012 | Active | SG13 |
| PREMIERE STREET LIGHTING LIMITED | 43210 · electrical installation | 2003 | Active | SG13 |
| MEADOWSON LIMITED | 43290 · other construction installation | 1977 | Active | SG13 |
| REDFORD ELECTRICAL LTD | 43210 · electrical installation | 2019 | Active | SG14 |
| VERVE ELECTRICAL SOLUTIONS LIMITED | 43210 · electrical installation | 2023 | Active | SG13 |
| E-LECTRIK ENGINEERING LTD | 43210 · electrical installation | 2024 | Active | SG13 |
| FOSTER ELECTRICS LTD | 43210 · electrical installation | 2024 | Active | SG14 |
| J&S ELECTRICAL INSTALLATIONS LTD | 43210 · electrical installation | 2025 | Active | SG14 |
| RK AND SONS LTD | 43290 · other construction installation; 41100; 47540 | 2019 | Active - Proposal to Strike off | SG14 |
| HERTFORDSHIRE DEVELOPMENTS LIMITED | 43290 · other construction installation | 2018 | Active - Proposal to Strike off | SG14 |
| ENERGYSAVE ELECTRICAL LTD | 43210 · electrical installation | 2010 | Liquidation | SG14 |
| T W PROPERTY SERVICES LIMITED | 43290 · other construction installation | 2004 | Liquidation | SG14 |
| R L ELECTRIX LIMITED | 43210 · electrical installation | 2012 | Active - Proposal to Strike off | SG14 |
| GAS SPECIAL PROJECTS LTD | 43290 · other construction installation | 2021 | Active - Proposal to Strike off | SG13 |
| INSTALL & MAINTAIN ELECTRICAL LIMITED | 43210 · electrical installation | 2019 | Active - Proposal to Strike off | SG13 |
| HERTS ELECTRICAL CONTRACTORS LIMITED | 43210 · electrical installation | 2005 | Voluntary Arrangement | SG13 |
| AMYB INSTALLATION LTD | 43210 · electrical installation | 2019 | Active - Proposal to Strike off | SG14 |
| CA ELECTRICAL SOLUTIONS LTD | 43210 · electrical installation | 2016 | Active - Proposal to Strike off | SG13 |
| MGV GROUP LTD | 43290 · other construction installation | 2021 | Active - Proposal to Strike off | SG14 |
| WATERS ELECTRICAL CONTRACTOR LIMITED | 43210 · electrical installation | 2016 | Active - Proposal to Strike off | SG13 |
Heat and planning around Hertford
In Hertford last summer (2026) there were ≈11 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 2 postcode districts where these offices are registered.
35% of sampled postcodes in Hertford sit in a conservation area (1,153 live postcodes across 2 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.