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H20 PLUMBING 'N' HEATING LIMITED: plumbing, heating and air-conditioning company in Cardiff
H20 PLUMBING 'N' HEATING LIMITED is an active limited company (no. 11352549), incorporated in 2018, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in CF5 (Cardiff), and 262 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
262 similar companies within 10 km. Cardiff
What homes around CF5 need
In CF5 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 CF5 sit in a conservation area (on-record, 1,444 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 |
|---|---|---|---|
| CARDIFF GAS & MAINTENANCE LTD | 12722037 | CF5 | ≈0.3 km |
| PROMECH SYSTEMS LTD | 12593797 | CF5 | ≈0.5 km |
| H.HERBERT PLUMBING SERVICES LTD | 13869649 | CF5 | ≈0.6 km |
| CYNNES CYF | 13313525 | CF5 | ≈0.9 km |
| MANFIELD HEATING LTD | 15791957 | CF5 | ≈0.9 km |
| RAVEN PLUMBING & HEATING LIMITED | 13885202 | CF5 | ≈1.0 km |
| CJ HEATING & RENEWABLES LIMITED | 16751609 | CF5 | ≈1.0 km |
| VORTEX TRANSPORT & PLUMBING SOLUTIONS LTD | 10737468 | CF5 | ≈1.2 km |
| AFFORDABLE WARMTH LTD | 11490632 | CF5 | ≈1.2 km |
| FOCUS MEP (FM) LTD | 15900426 | CF5 | ≈1.2 km |
Company record
| Field | Value |
|---|---|
| Company number | 11352549 |
| Name | H20 PLUMBING 'N' HEATING LIMITED |
| Status | Active |
| Incorporated | 9 May 2018 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | CF5 3HS |
| Outcode | CF5 |
| 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 11352549 |
Companies House record: H20 PLUMBING 'N' HEATING LIMITED, company 11352549, 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.