Home / Installers / Harrow
C&J PLUMBING LTD: plumbing, heating and air-conditioning company in Harrow
C&J PLUMBING LTD is an active limited company (no. 15099412), incorporated in 2023, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in HA1 (Harrow), and 1,805 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
1,805 similar companies within 10 km. Harrow
What homes around HA1 need
In HA1 last summer (2026) there were ≈12 nights that stayed above 18 °C — 8 times the 1991–2020 average of 1.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
12% of sampled postcodes in HA1 sit in a conservation area (on-record, 954 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 |
|---|---|---|---|
| I.P. PLUMBING & HEATING LTD | 14568488 | HA1 | ≈0.3 km |
| ELECTROPLUMECH MEP SERVICES LTD | 16883011 | HA1 | ≈0.4 km |
| IJ HEATING AND PLUMBING LTD | 14689278 | HA1 | ≈0.4 km |
| DS KELLY SERVICES LIMITED | 09969297 | HA1 | ≈0.5 km |
| ADVANCE HEATING & ELECTRICALS LTD | 07823692 | HA1 | ≈0.5 km |
| BMI PLUMBING LTD | 11933940 | HA1 | ≈0.5 km |
| FROST LINE REFRIGERATION LTD | 12008881 | HA1 | ≈0.5 km |
| GALAXY HEATING AND COOLING LIMITED | 13725692 | HA1 | ≈0.5 km |
| AIRAIX LIMITED | 14191820 | HA1 | ≈0.5 km |
| ECO FIT ENERGY LTD | 17293924 | HA1 | ≈0.5 km |
Company record
| Field | Value |
|---|---|
| Company number | 15099412 |
| Name | C&J PLUMBING LTD |
| Status | Active |
| Incorporated | 28 Aug 2023 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | HA1 1UW |
| Outcode | HA1 |
| 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 15099412 |
Companies House record: C&J PLUMBING LTD, company 15099412, 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.