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SA4: plumbing, heating and air-conditioning companies in Swansea
SA4 (Swansea) has 34 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 46 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, SA4 had ≈6 nights above 18 °C in 2026 (9 times the 1991–2020 average of 0.7).
SA4
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ALTAN PLUMBING & HEATING LTD, incorporated 2021, status Active.
Plumbing, heating and air-conditioning companies
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| AMICO HOLDINGS LTD | 43210 · electrical installation | 2019 | Active | SA4 |
| BUTLER & EDWARDS ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2017 | Active | SA4 |
| CEE CONTRACTORS LTD | 43210 · electrical installation | 2012 | Active | SA4 |
| CHARISMA CONSTRUCTION LTD | 43290 · other construction installation | 2022 | Active | SA4 |
| DC ELECTRICAL (SWANSEA) LTD | 43210 · electrical installation | 2014 | Active | SA4 |
| DJTM ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2016 | Active | SA4 |
| DLE ELECTRICAL LTD | 43210 · electrical installation | 2024 | Active | SA4 |
| DRAIGMOR LIMITED | 43210 · electrical installation | 1971 | Active | SA4 |
| ECO ENERGY ELECTRICAL ENGINEERING SOLUTIONS LIMITED | 43210 · electrical installation | 2006 | Active - Proposal to Strike off | SA4 |
| FAIRRAY TECHNICAL LTD | 43210 · electrical installation | 2025 | Active | SA4 |
| GOWER COMPOSITE DECKING AND CARPENTRY LTD | 43290 · other construction installation; 81300 | 2021 | Active - Proposal to Strike off | SA4 |
| GOWER ENERGY LTD | 43290 · other construction installation | 2019 | Active - Proposal to Strike off | SA4 |
| GREEN DREAM CONCEPTS LTD | 43290 · other construction installation; 43390; 81300 | 2023 | Active | SA4 |
| GREENSAVE SYSTEMS LTD | 43290 · other construction installation | 2025 | Active - Proposal to Strike off | SA4 |
| HARTZ ELECTRIX LTD | 43210 · electrical installation; 33140 | 2023 | Active | SA4 |
| HUTCHINSON PHILLIPS ELECTRICAL LTD | 43210 · electrical installation | 2017 | Active | SA4 |
| J D ELECTRICAL (SWANSEA) LTD | 43210 · electrical installation | 2024 | Active | SA4 |
| J&R ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2016 | Active | SA4 |
| JAMES DRYLINING LTD | 43290 · other construction installation; 43310; 43390 | 2025 | Active | SA4 |
| JIMMYJACK SERVICES LIMITED | 43290 · other construction installation | 2010 | Active | SA4 |
| JOHN X - MECHWIND LTD | 43210 · electrical installation; 33140 | 2020 | Active | SA4 |
| JRJELECTRICAL SERVICES LTD | 43210 · electrical installation | 2022 | Active - Proposal to Strike off | SA4 |
| K.EVANS ELECTRICAL LIMITED | 43210 · electrical installation | 2023 | Active | SA4 |
| KC ELECTRICAL (WALES) LTD | 43210 · electrical installation | 2010 | Active | SA4 |
| LIGHTHOUSE ELECTRICAL SERVICES DIRECT LIMITED | 43210 · electrical installation; 33140 | 2006 | Active | SA4 |
| MART & SPARKS LTD | 43210 · electrical installation | 2023 | Active | SA4 |
| MERLIN FIRE SERVICES LIMITED | 43210 · electrical installation | 2016 | Active | SA4 |
| MUMBLES ELECTRIC GATES LTD | 43210 · electrical installation | 2026 | Active | SA4 |
| NOVASOL ENERGY LTD | 43210 · electrical installation | 2025 | Active | SA4 |
| PHASOR SERVICES LIMITED | 43210 · electrical installation | 2003 | Active | SA4 |
| PIONEER ELECTRICAL INSTALLATIONS LIMITED | 43210 · electrical installation | 2008 | Active | SA4 |
| PLAN A GLAZING & CONSTRUCTION SERVICES LIMITED | 43290 · other construction installation | 2018 | Active - Proposal to Strike off | SA4 |
| PRIME ROOFING SPECIALISTS LTD | 43290 · other construction installation; 43910 | 2024 | Active | SA4 |
| PROPERTY PERFORMANCE GROUP LTD | 43290 · other construction installation; 68320; 74909; 81100 | 2026 | Active | SA4 |
| RAINBOW SOLUTIONS WALES LIMITED | 43290 · other construction installation | 2003 | Active | SA4 |
| RAWELEC LTD. | 43210 · electrical installation | 2021 | Active | SA4 |
| RD SOLAR AND BUILDING LTD | 43210 · electrical installation | 2024 | Active | SA4 |
| SKY BLUE SOLAR LTD | 43210 · electrical installation | 2023 | Active | SA4 |
| SOLAIR SOLUTIONS LTD | 43210 · electrical installation | 2022 | Active | SA4 |
| TERRA ELECTRICAL SOLUTIONS LIMITED | 43210 · electrical installation | 2022 | Active - Proposal to Strike off | SA4 |
| TIDYBUILD LTD | 43290 · other construction installation | 2016 | Active | SA4 |
| TRC GROUNDWORKS & CONSTRUCTION LTD | 43290 · other construction installation | 2026 | Active | SA4 |
| WAYNE GRIFFITHS HOME REFURBISHMENTS LTD | 43290 · other construction installation | 2023 | Active | SA4 |
| WESTWINDS VENTILATION LTD | 43290 · other construction installation | 2019 | Active - Proposal to Strike off | SA4 |
| WHITEHURST ELECTRICAL LIMITED | 43210 · electrical installation | 2016 | Liquidation | SA4 |
| WILLIAMS ELECTRICAL SW LTD | 43210 · electrical installation | 2023 | Active | SA4 |
What homes around SA4 need
In SA4 last summer (2026) there were ≈6 nights that stayed above 18 °C — 9 times the 1991–2020 average of 0.7 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
3% of sampled postcodes in SA4 sit in a conservation area (on-record, 1,149 live postcodes).
In Wales 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 SA4, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in SA4, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in SA4, with that district's hot nights and planning rule.