Treorchy: plumbing, heating and air-conditioning companies
Treorchy has 4 plumbing, heating and air-conditioning companies (SIC 43220) and 20 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 CF42, summer 2026 had ≈5 nights above 18 °C there (30 times the 1991–2020 average of 0.2).
SIC 43220
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CALGAR PLUMBING AND HEATING LTD, incorporated 2022, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| CALGAR PLUMBING AND HEATING LTD | 2022 | Active | CF42 |
| LEWIS.PLUMBING.HEATING LTD | 2024 | Active | CF42 |
| CARTREF SOLUTIONS LTD | 2026 | Active | CF42 |
| C STRINATI INSTALLATIONS LTD | 2015 | Active - Proposal to Strike off | CF42 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| DEMA FIRE & SECURITY LTD | 43210 · electrical installation | 2019 | Active | CF42 |
| DIRECT FIRE & SECURITY SOLUTIONS LTD. | 43210 · electrical installation | 2024 | Active | CF42 |
| ECOSHIELD WINDOWS LTD | 43290 · other construction installation | 2024 | Active | CF42 |
| A.E.S ADVANCED ELECTRICAL SYSTEMS LTD | 43210 · electrical installation | 2020 | Active | CF42 |
| ALLSORTS SOLUTIONS LTD | 43210 · electrical installation; 43999 | 2020 | Active | CF42 |
| CDJ ELECTRICAL LTD | 43210 · electrical installation | 2016 | Active | CF42 |
| CONCEPT CARPENTRY SERVICES LIMITED | 43290 · other construction installation; 43320 | 2025 | Active | CF42 |
| KES ELECTRICAL SERVICES SOUTH WALES LIMITED | 43210 · electrical installation | 2024 | Active | CF42 |
| MDS HEATING INSTALLATIONS LIMITED | 43210 · electrical installation | 2024 | Active | CF42 |
| PRO RENEWABLE UK LTD | 43290 · other construction installation | 2023 | Active | CF42 |
| SOUTH WALES VENT SYSTEMS LTD | 43290 · other construction installation | 2022 | Active | CF42 |
| R C T CONSTRUCTION & MAINTENANCE LIMITED | 43290 · other construction installation | 2016 | Active | CF42 |
| WISE RENEWABLE ENERGY LTD | 43210 · electrical installation | 2021 | Active | CF42 |
| A C K L SERVICES LIMITED | 43210 · electrical installation | 2024 | Active | CF42 |
| REAL WINDOWS LIMITED | 43290 · other construction installation | 2004 | Active | CF42 |
| LEWYS ELECTRICAL LTD | 43210 · electrical installation | 2026 | Active | CF42 |
| NJ ELECTRICAL & SON LTD | 43210 · electrical installation | 2025 | Active | CF42 |
| MEGASAVE DEVELOPMENTS LIMITED | 43290 · other construction installation; 41100 | 2018 | Active | CF42 |
| COUNTY POWER ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation; 35300 | 2023 | Active | CF42 |
| AAW ELECTRICAL LTD | 43210 · electrical installation | 2017 | Active - Proposal to Strike off | CF42 |
Heat and planning around Treorchy
In Treorchy last summer (2026) there were ≈5 nights that stayed above 18 °C — 30 times the 1991–2020 average of 0.2 (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.
2% of sampled postcodes in Treorchy sit in a conservation area (309 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.