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ZEMEX LTD: plumbing, heating and air-conditioning company in Cardiff
ZEMEX LTD is an active limited company with a proposal to strike off (no. 10295210), incorporated in 2016, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in CF23 (Cardiff), and 272 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 - Proposal to Strike off
Within 10 km
272 similar companies within 10 km. Cardiff
What homes around CF23 need
In CF23 last summer (2026) there were ≈10 nights that stayed above 18 °C — 14 times the 1991–2020 average of 0.7 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
7% of sampled postcodes in CF23 sit in a conservation area (on-record, 908 live postcodes).
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).
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 |
|---|---|---|---|
| HEAT TEC SW LTD | 13506785 | CF23 | ≈0.4 km |
| TCB CONSTRUCTION CARDIFF LTD | 16424405 | CF23 | ≈0.5 km |
| CELTIC COOLING AND HEATING LIMITED | 04956373 | CF23 | ≈0.8 km |
| PIPERITE PLUMBING LTD | 08969426 | CF23 | ≈0.9 km |
| SOUTH WALES FIRE SPRINKLERS LIMITED | 10487398 | CF23 | ≈1.0 km |
| GRAY .S.G LTD | 17194670 | CF23 | ≈1.0 km |
| NORTH PLUMBING AND HEATING CARDIFF LTD | 14998603 | CF3 | ≈1.1 km |
| COOKMECH LTD | 15551299 | CF23 | ≈1.2 km |
| CF3 PLUMBING & HEATING LTD | 17050637 | CF3 | ≈1.3 km |
| SWEET HEAT PLUMBING & HEATING LIMITED | 16351658 | CF3 | ≈1.3 km |
Company record
| Field | Value |
|---|---|
| Company number | 10295210 |
| Name | ZEMEX LTD |
| Status | Active - Proposal to Strike off |
| Incorporated | 25 Jul 2016 |
| SIC | 43220 · plumbing, heat and air-conditioning installation; 43999 |
| Registered office postcode | CF23 9NN |
| Outcode | CF23 |
| Nation | Wales |
| 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 10295210 |
Companies House record: ZEMEX LTD, company 10295210, status Active - Proposal to Strike off, 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.