Aberystwyth: plumbing, heating and air-conditioning companies
Aberystwyth has 21 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 SY23, summer 2026 had ≈4 nights above 18 °C there (9 times the 1991–2020 average of 0.5).
SIC 43220
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ABER HEATING ENGINEER'S LTD, incorporated 2012, status Active.
Plumbing, heating and air-conditioning companies
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| AFAN ELECTRICAL LIMITED | 43210 · electrical installation | 2002 | Active | SY23 |
| EMJ ELECTRICAL LTD | 43210 · electrical installation | 2013 | Active | SY23 |
| TME ELECTRICAL CONTRACTING LTD | 43210 · electrical installation | 2002 | Active | SY23 |
| TME ELECTRICAL LTD | 43210 · electrical installation | 2018 | Active | SY23 |
| PADARN ALARMS LTD | 43210 · electrical installation | 2015 | Active | SY23 |
| PADARN SYSTEMS LTD | 43210 · electrical installation | 2024 | Active | SY23 |
| CELTIC ELECTRICAL LTD | 43210 · electrical installation | 2024 | Active | SY23 |
| STR ROOFING & SOLAR CYF | 43210 · electrical installation; 43910 | 2026 | Active | SY23 |
| FIRE ALARM & ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2026 | Active | SY23 |
| ELECTRICAL ESTIMATES LTD | 43210 · electrical installation | 2019 | Active | SY23 |
| SONNY VAUGHAN ELECTRICAL LTD. | 43210 · electrical installation | 2018 | Active | SY23 |
| BUILDING CONTROLS MAINTENANCE HOLDINGS LIMITED | 43290 · other construction installation | 2024 | Active | SY23 |
| DINAS HOME IMPROVEMENTS LIMITED | 43290 · other construction installation | 2023 | Active | SY23 |
| TOM JEWELL CARPENTRY & BUILDING LTD | 43290 · other construction installation; 43320 | 2023 | Active | SY23 |
| LES JONES ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2026 | Active | SY23 |
| TRYDAN AJ ELECTRICAL LTD | 43210 · electrical installation | 2025 | Active | SY23 |
| BRIGHTWIRES LTD | 43210 · electrical installation | 2025 | Active | SY23 |
| CBS MID WALES LIMITED | 43290 · other construction installation; 43390; 43910 | 2015 | Active | SY23 |
| TRYDAN WILL DAVEY ELECTRICAL LTD | 43210 · electrical installation | 2023 | Active | SY23 |
| WWEC LTD | 43210 · electrical installation | 2019 | Active | SY23 |
| RHODRI JENKINS LIMITED | 43290 · other construction installation | 2013 | Active | SY23 |
| RWJ HIRE LIMITED | 43210 · electrical installation | 2013 | Active | SY23 |
| AL FENCING GROUP LTD | 43290 · other construction installation | 2025 | Active | SY23 |
| AL GROUNDWORKS LIMITED | 43290 · other construction installation | 2023 | Active | SY23 |
| HAYWARD ELECTRICAL (WALES) LIMITED | 43210 · electrical installation | 2012 | Active - Proposal to Strike off | SY23 |
Heat and planning around Aberystwyth
In Aberystwyth last summer (2026) there were ≈4 nights that stayed above 18 °C — 9 times the 1991–2020 average of 0.5 (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.
20% of sampled postcodes in Aberystwyth sit in a conservation area (982 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.