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ALPHA PLUMBERS LTD: plumbing, heating and air-conditioning company in St Albans
ALPHA PLUMBERS LTD is an active limited company (no. 15737219), incorporated in 2024, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in AL4 (St Albans), and 245 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
245 similar companies within 10 km. St Albans
What homes around AL4 need
In AL4 last summer (2026) there were ≈11 nights that stayed above 18 °C — 7 times the 1991–2020 average of 1.5 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
8% of sampled postcodes in AL4 sit in a conservation area (on-record, 787 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 |
|---|---|---|---|
| HIGHFIELD MECHANICAL SERVICES LTD | 09607792 | AL4 | ≈0.6 km |
| ELITE AC LTD | 13139403 | AL4 | ≈0.6 km |
| ADVANCED DRAINAGE SOLUTIONS LIMITED | 05681686 | AL4 | ≈0.7 km |
| SEYMOUR PLUMBING LTD | 11633938 | AL4 | ≈0.7 km |
| OWL VENT LTD | 14925989 | AL4 | ≈0.7 km |
| NONPAREIL SOLUTIONS LIMITED | 07249228 | AL4 | ≈2.1 km |
| HERTFORDSHIRE PLUMBING & HEATING LTD | 08074812 | AL4 | ≈2.1 km |
| FIRST PLUMBING LTD | 14582300 | AL5 | ≈3.0 km |
| HARPENDEN PLUMBING AND HEATING LIMITED | 10022268 | AL5 | ≈3.0 km |
| CK PLUMBERS LTD | 13896481 | AL5 | ≈3.1 km |
Company record
| Field | Value |
|---|---|
| Company number | 15737219 |
| Name | ALPHA PLUMBERS LTD |
| Status | Active |
| Incorporated | 23 May 2024 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | AL4 8PR |
| Outcode | AL4 |
| 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 15737219 |
Companies House record: ALPHA PLUMBERS LTD, company 15737219, 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.