Conwy: plumbing, heating and air-conditioning companies
Conwy has 9 plumbing, heating and air-conditioning companies (SIC 43220) and 13 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 LL32, summer 2026 had ≈3 nights above 18 °C there (6 times the 1991–2020 average of 0.5).
SIC 43220
Open a company
CRL GROUP LTD, incorporated 1980, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| NRJ HEATING LIMITED | 2013 | Active | LL32 |
| G & W JONES LIMITED | 2010 | Active | LL32 |
| WHELAN SERVICES LTD | 2024 | Active | LL31 |
| CRL GROUP LTD | 1980 | Active | LL32 |
| STEVE BARRETT HEATING AND GAS SERVICES LTD | 2021 | Active | LL31 |
| KYLE JAMES PLUMBING HEATING AND RENEWABLES LIMITED | 2026 | Active | LL31 |
| DPB TM LTD | 2018 | Active | LL32 |
| FLUSH HEATING LTD | 2022 | Active | LL32 |
| I S M HEATING SERVICES LIMITED | 2016 | Active | LL22 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| PRECISION PIPEFITTING LIMITED | 43290 · other construction installation | 2026 | Active | LL32 |
| WYNEX REPAIR LTD | 43290 · other construction installation | 2018 | Active | LL32 |
| NICK HILL ELECTRICAL LTD | 43210 · electrical installation | 2021 | Active | LL32 |
| SWAINSON ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation | 2020 | Active | LL31 |
| LJ INSTALLS LIMITED | 43290 · other construction installation | 2022 | Active | LL32 |
| STC RENEWABLES LIMITED | 43290 · other construction installation | 2024 | Active | LL31 |
| ALEXANDER GRACE BATHROOM DESIGNS LTD | 43290 · other construction installation | 2021 | Active | LL31 |
| LEVANTAS ENERGY LTD | 43210 · electrical installation | 2026 | Active | LL31 |
| NORTH WALES FIRE SUPPRESSION SYSTEMS LTD | 43290 · other construction installation | 2025 | Active | LL32 |
| THOMAS JONES (LLANDUDNO) LIMITED | 43290 · other construction installation | 1958 | Active | LL30 |
| LEIGHS PROPERTY SERVICES (NORTH WEST) LTD | 43290 · other construction installation | 2019 | Active | LL32 |
| DULYN CONSTRUCTION LTD | 43290 · other construction installation; 41202; 42110; 42990 | 2025 | Active | LL32 |
| WARM HOMES ENERGY GROUP LTD | 43210 · electrical installation; 96090 | 2021 | Active | LL32 |
Heat and planning around Conwy
In Conwy last summer (2026) there were ≈3.3 nights that stayed above 18 °C — 7 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 4 postcode districts where these offices are registered.
11% of sampled postcodes in Conwy sit in a conservation area (1,885 live postcodes across 4 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.