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JJA MECHANICAL LIMITED: plumbing, heating and air-conditioning company in Derby
JJA MECHANICAL LIMITED is an active limited company (no. 16448968), incorporated in 2025, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in DE74 (Derby), and 117 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
117 similar companies within 10 km. Derby
What homes around DE74 need
In DE74 last summer (2026) there were ≈7 nights that stayed above 18 °C — 8 times the 1991–2020 average of 0.9 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
11% of sampled postcodes in DE74 sit in a conservation area (on-record, 341 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 |
|---|---|---|---|
| TREVOR COLLINGTON AND SONS LIMITED | 04976847 | DE74 | ≈0.7 km |
| HEATINGFORCE LTD | 16534148 | DE74 | ≈2.5 km |
| LOCKWOOD MAINTENANCE LTD | 17361870 | LE12 | ≈3.8 km |
| FLOW POWER SOLUTIONS LIMITED | 11815084 | DE74 | ≈3.9 km |
| SD BATHROOMS LTD | 15444114 | DE74 | ≈4.5 km |
| HEATING CARE PRO LTD | 16231753 | DE74 | ≈4.5 km |
| B CANTY LIMITED | 13887330 | DE74 | ≈4.6 km |
| R H MOSS & CO LIMITED | 07731136 | NG10 | ≈4.6 km |
| JB & CO (NOTTINGHAM) LTD | 16429655 | NG10 | ≈4.9 km |
| SOUND PROPERTY DEVELOPMENTS LTD | 06325845 | NG10 | ≈5.1 km |
Company record
| Field | Value |
|---|---|
| Company number | 16448968 |
| Name | JJA MECHANICAL LIMITED |
| Status | Active |
| Incorporated | 13 May 2025 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | DE74 2YB |
| Outcode | DE74 |
| 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 16448968 |
Companies House record: JJA MECHANICAL LIMITED, company 16448968, 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.