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NJWCO LTD: plumbing, heating and air-conditioning company in St Columb
NJWCO LTD is an active limited company (no. 16296420), incorporated in 2025, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in TR9 (St Columb), and 21 similar companies have a registered office within 10 km. If you need an MCS-certified air-to-air installer, MCS lists 0 installers certified for air-to-air heat pumps yet (checked 25 Sep 2026), so no company here can offer the £2,500 grant route today.
Active
Within 10 km
21 similar companies within 10 km. St Columb
What homes around TR9 need
In TR9 last summer (2026) there were ≈9 nights that stayed above 18 °C — 11 times the 1991–2020 average of 0.8 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
9% of sampled postcodes in TR9 sit in a conservation area (on-record, 286 live postcodes).
In England 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).
Hot nights: ERA5-ARCO, June–August, minimum at or above 18 °C, 2026 against the 1991–2020 mean, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points, snapshot 25 Sep 2026. Noise limit from the decision contract, checked 25 Sep 2026.
Nearest similar companies
| Company | Number | District | Distance |
|---|---|---|---|
| HARRIS SERVICES CORNWALL LIMITED | 08955935 | TR9 | ≈1.0 km |
| PLC MECHANICAL SERVICES LIMITED | 11249348 | TR9 | ≈4.1 km |
| BARTUR CONSTRUCTION LTD | 16562634 | PL26 | ≈6.7 km |
| MEP SOUTH WEST LTD | 14080340 | TR7 | ≈7.7 km |
| TREVINE CLIMATE LTD | 17313262 | TR8 | ≈8.0 km |
| M & J KEAST PLUMBING & HEATING LIMITED | 10124633 | PL26 | ≈8.1 km |
| CHY HEATING LIMITED | 17314263 | TR7 | ≈8.2 km |
| C & J PLUMBING & HEATING SOUTH WEST LTD | 08042876 | PL30 | ≈8.2 km |
| KOZYKOALA RENEWABLES LTD | 15030904 | PL26 | ≈8.2 km |
| KERNOW THERMAL LTD | 16869167 | PL26 | ≈8.2 km |
Company record
| Field | Value |
|---|---|
| Company number | 16296420 |
| Name | NJWCO LTD |
| Status | Active |
| Incorporated | 5 Mar 2025 |
| SIC | 43220 · plumbing, heat and air-conditioning installation; 43210 · electrical installation |
| Registered office postcode | TR9 6BG |
| Outcode | TR9 |
| Nation | England |
| Air-to-air signal | not yet observed, checked 25 Sep 2026 |
| F-Gas | not yet observed, checked 25 Sep 2026 |
| MCS air-to-air | not yet observed, checked 25 Sep 2026 |
| Retrieved | 25 Sep 2026 |
| Dataset | https://download.companieshouse.gov.uk/BasicCompanyDataAsOneFile-2026-09-01.zip |
| Companies House page | Company 16296420 |
Companies House record: NJWCO LTD, company 16296420, status Active, 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. Snapshot 1 Sep 2026, retrieved 25 Sep 2026. The 10 km count is equirectangular to 0.1 km. MCS air-to-air confirmed in this catalogue: 0, checked 25 Sep 2026.
Better than a reviews catalogue: the Companies House record, the district hot-night count and the MCS air-to-air observation are on one page.