Penarth: plumbing, heating and air-conditioning companies
Penarth has 11 plumbing, heating and air-conditioning companies (SIC 43220) and 25 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 CF64, summer 2026 had ≈10 nights above 18 °C there (14 times the 1991–2020 average of 0.7).
SIC 43220
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A GRIGORIOU PLUMBING & HEATING LTD, incorporated 2026, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| CLEAN GEN SOLUTIONS LTD | 2024 | Active | CF64 |
| AIR CONDITIONING CARDIFF LTD | 2026 | Active | CF64 |
| TIMELESS BATHROOMS LTD | 2025 | Active | CF64 |
| BIG BEAR REFRIGERATION LTD | 2021 | Active | CF64 |
| STURDY PLUMBING COMPANY LIMITED | 1968 | Active | CF64 |
| DRAGON GAS & ELECTRICS LTD | 2019 | Active | CF64 |
| CELTIC PLUMBING AND HEATING LTD | 2002 | Active | CF64 |
| A GRIGORIOU PLUMBING & HEATING LTD | 2026 | Active | CF64 |
| GENTILE PLUMBING AND HEATING LIMITED | 2024 | Active | CF64 |
| GAS SAFETY CARDIFF LTD | 2019 | Active - Proposal to Strike off | CF64 |
| GREEN ECO-OPTIONS LIMITED | 2012 | Active - Proposal to Strike off | CF64 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| ELB CONTRACTORS LTD | 43290 · other construction installation | 2015 | Active | CF64 |
| DWKI LTD | 43290 · other construction installation; 43320 | 2023 | Active | CF64 |
| THOR DEVELOPMENTS (UK) LIMITED | 43210 · electrical installation; 41202 | 2015 | Active | CF64 |
| BOLT ELECTRICAL SOLUTIONS LTD | 43210 · electrical installation | 2026 | Active | CF64 |
| CBR SOLUTIONS LIMITED | 43210 · electrical installation | 2026 | Active | CF64 |
| METRON WROUGHT IRONWORK LIMITED | 43290 · other construction installation | 2021 | Active | CF64 |
| SMART HOUSE ARCHI.TECH LIMITED | 43290 · other construction installation | 2019 | Active | CF64 |
| DRAGON ELECTRICS LTD | 43210 · electrical installation | 2018 | Active | CF64 |
| SADLER CARPENTRY LIMITED | 43290 · other construction installation | 2026 | Active | CF64 |
| GREEN MODULAR CONSTRUCTION SOLUTIONS LTD | 43290 · other construction installation | 2021 | Active | CF64 |
| D HARRIS ELECTRICAL LTD | 43210 · electrical installation | 2019 | Active | CF64 |
| MKH DECORATORS LTD. | 43290 · other construction installation | 2025 | Active | CF64 |
| FRANKIE'S CONSTRUCTION LTD | 43210 · electrical installation | 2026 | Active | CF64 |
| THOR ELECTRICAL INSTALLATIONS LIMITED | 43210 · electrical installation | 2025 | Active | CF64 |
| CP ELECTRICAL & RENEWABLES LTD | 43210 · electrical installation | 2025 | Active | CF64 |
| J & D ELECTRICAL LIMITED | 43210 · electrical installation | 2015 | Active | CF64 |
| MWJ ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2024 | Active | CF64 |
| ALEXANDER CONSTRUCTORS LTD | 43290 · other construction installation; 41100; 41202; 68100 | 2023 | Active | CF64 |
| JMW ENERGY SERVICES LIMITED | 43210 · electrical installation; 35110 | 2025 | Active | CF64 |
| S&L ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2018 | Active | CF64 |
| L&T ELECTRICAL LTD | 43210 · electrical installation | 2024 | Active | CF64 |
| M MURPHY GROUP LIMITED | 43290 · other construction installation | 2018 | Active | CF64 |
| CHANNEL ELECTRICAL SYSTEMS LIMITED | 43210 · electrical installation | 2017 | Active | CF64 |
| WHILL ELECTRICAL AND MECHANICAL LTD | 43210 · electrical installation | 2019 | Active - Proposal to Strike off | CF64 |
| OLEC ELECTRICAL LIMITED | 43210 · electrical installation | 2014 | Active - Proposal to Strike off | CF64 |
Heat and planning around Penarth
In Penarth last summer (2026) there were ≈10 nights that stayed above 18 °C — 14 times the 1991–2020 average of 0.7 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities). The figure is the household-weighted mean of 1 postcode districts where these offices are registered.
18% of sampled postcodes in Penarth sit in a conservation area (923 live postcodes across 1 districts).
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, 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.