Monmouth: plumbing, heating and air-conditioning companies
Monmouth has 13 plumbing, heating and air-conditioning companies (SIC 43220) and 27 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 NP25, summer 2026 had ≈9 nights above 18 °C there (14 times the 1991–2020 average of 0.6).
SIC 43220
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G J PLUMBING & HEATING SERVICES LIMITED, incorporated 2021, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| J OLIVER PLUMBING LIMITED | 2014 | Active | NP25 |
| UNITED TRADES (MONMOUTH) LIMITED | 2022 | Active | NP25 |
| G J PLUMBING & HEATING SERVICES LIMITED | 2021 | Active | NP25 |
| HEATLINE HEATING & PLUMBING LIMITED | 2017 | Active | NP25 |
| NOVIRA HEATING SOLUTIONS LTD | 2026 | Active | NP25 |
| OFF GRID HEATING LIMITED | 2014 | Active | NP25 |
| PRICE HEAT LIMITED | 2018 | Active | NP25 |
| WELLS PLUMBING SERVICES LIMITED | 2026 | Active | NP25 |
| MONNOW ECO PLUMB LTD | 2023 | Active | NP25 |
| K & T GREEN SERVICES LIMITED | 2014 | Active | NP25 |
| JB GROUP (SW) LTD | 2018 | Active | NP25 |
| NOVALUX CHP LIMITED | 2023 | Active | NP7 |
| PLUMB RIGHT CHOICE LIMITED | 2018 | Active - Proposal to Strike off | NP25 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| WYEFIELD WINDOWS & DOORS LIMITED | 43290 · other construction installation | 2022 | Active | NP25 |
| BOULTON ELECTRICALS LIMITED | 43210 · electrical installation | 2025 | Active | NP25 |
| C.R. GOUGH ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2024 | Active | NP25 |
| DJ SIMMONS KITCHENS & BATHROOMS LIMITED | 43290 · other construction installation | 2019 | Active | NP25 |
| MONNOW MARQUEES LIMITED | 43290 · other construction installation | 2019 | Active | NP25 |
| NIGHTINGALE ELECTRICAL LIMITED | 43210 · electrical installation | 2021 | Active | NP25 |
| OMNIORIGIN LIMITED | 43290 · other construction installation | 2025 | Active | NP25 |
| RF BRICKLAYING AND LANDSCAPE GARDENING LTD | 43290 · other construction installation; 43999; 81300 | 2023 | Active | NP25 |
| SEREN KITCHEN & PROPERTY DEVELOPMENTS LIMITED | 43290 · other construction installation | 2025 | Active | NP25 |
| TMB RENEWABLE SOLUTIONS LTD | 43210 · electrical installation | 2024 | Active | NP25 |
| TOM WALKER ELECTRICS LIMITED | 43210 · electrical installation | 2026 | Active | NP25 |
| QUATRO TILES LTD | 43290 · other construction installation | 2023 | Active | NP25 |
| MONNOW SITE SERVICES LTD | 43290 · other construction installation | 2021 | Active | NP25 |
| BRIS ELECTRICAL LTD | 43210 · electrical installation | 2020 | Active | NP25 |
| BWC GROUNDWORKS LTD | 43290 · other construction installation | 2016 | Active | NP25 |
| BCC ELECTRICAL LTD | 43210 · electrical installation | 2020 | Active | NP25 |
| JPR ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2022 | Active | NP25 |
| MJM ELECTRICAL (SOUTH WEST) LIMITED | 43210 · electrical installation | 2022 | Active | NP25 |
| SPJ POWER LTD | 43210 · electrical installation | 2025 | Active | NP25 |
| AMS FIRE SOLUTIONS LTD | 43210 · electrical installation | 2021 | Active | NP25 |
| BING BUILDING LTD | 43210 · electrical installation; 41100; 41202; 43120 | 2018 | Active | NP25 |
| ELECTRICAL MAINTENANCE SERVICES LTD | 43210 · electrical installation; 33140; 71129 | 2021 | Active | NP25 |
| HOME GENIUS LTD | 43210 · electrical installation | 2022 | Active | NP25 |
| COPPERBAND LTD | 43290 · other construction installation; 43999; 74909 | 2019 | Active | NP25 |
| SFS ELECTRICAL SERVICES LIMITED | 43210 · electrical installation | 2018 | Active | NP25 |
| NOVALUX SOLAR LIMITED | 43210 · electrical installation; 43910 | 2023 | Active | NP7 |
| SHIRE PAVING LTD | 43290 · other construction installation | 2019 | Active - Proposal to Strike off | NP25 |
Heat and planning around Monmouth
In Monmouth last summer (2026) there were ≈7.7 nights that stayed above 18 °C — 17 times the 1991–2020 average of 0.4 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities). The figure is the household-weighted mean of 2 postcode districts where these offices are registered.
20% of sampled postcodes in Monmouth sit in a conservation area (1,645 live postcodes across 2 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.