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JOHNSON AIR CONDITIONING LTD: plumbing, heating and air-conditioning company in Cardiff
JOHNSON AIR CONDITIONING LTD is an active limited company (no. 14927641), incorporated in 2023, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in CF3 (Cardiff), and 261 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
261 similar companies within 10 km. Cardiff
What homes around CF3 need
In CF3 last summer (2026) there were ≈12 nights that stayed above 18 °C — 12 times the 1991–2020 average of 1.0 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
1% of sampled postcodes in CF3 sit in a conservation area (on-record, 921 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 |
|---|---|---|---|
| GOD OF GAS LTD | 15999259 | CF3 | ≈0.1 km |
| SWEET HEAT PLUMBING & HEATING LIMITED | 16351658 | CF3 | ≈0.3 km |
| CF3 PLUMBING & HEATING LTD | 17050637 | CF3 | ≈0.3 km |
| COOK’S HEATING AND COOLING LTD | 14844994 | CF3 | ≈0.4 km |
| FLAWLESS PLUMBING SERVICES LTD | 15822477 | CF3 | ≈0.6 km |
| NORTH PLUMBING AND HEATING CARDIFF LTD | 14998603 | CF3 | ≈0.6 km |
| EXTREME HEATING LTD | 11116161 | CF3 | ≈0.7 km |
| EXTREME HEATING MAINTENANCE LTD | 12023795 | CF3 | ≈0.7 km |
| RM ECOAIR SERVICES LTD | 16386188 | CF3 | ≈0.9 km |
| MDM SAFE HOME LIMITED | 12580203 | CF3 | ≈0.9 km |
Company record
| Field | Value |
|---|---|
| Company number | 14927641 |
| Name | JOHNSON AIR CONDITIONING LTD |
| Status | Active |
| Incorporated | 10 Jun 2023 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | CF3 4EH |
| Outcode | CF3 |
| 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 14927641 |
Companies House record: JOHNSON AIR CONDITIONING LTD, company 14927641, 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.