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DPH MECHANICAL LTD: plumbing, heating and air-conditioning company in Watford
DPH MECHANICAL LTD is an active limited company (no. 10233653), incorporated in 2016, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in WD18 (Watford), and 779 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
779 similar companies within 10 km. Watford
What homes around WD18 need
In WD18 last summer (2026) there were ≈10 nights that stayed above 18 °C — 8 times the 1991–2020 average of 1.3 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
6% of sampled postcodes in WD18 sit in a conservation area (on-record, 712 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 |
|---|---|---|---|
| FLOW SPEED PLUMBING LTD | 16898075 | WD18 | under 0.1 km |
| GASTON PLUMBING LTD | 14777770 | WD18 | ≈0.1 km |
| EVA PLUMBING LTD | 13986659 | WD18 | ≈0.2 km |
| MIRABOLIS LTD | 10159674 | WD18 | ≈0.2 km |
| RENEWABLE ENERGY HEATWORKS LTD | 16582072 | WD18 | ≈0.3 km |
| ATLAN ENGINEERING LTD | 17087943 | WD18 | ≈0.3 km |
| PR PLUMBING & BUILDING SOLUTIONS LTD | 17250196 | WD18 | ≈0.4 km |
| JK INSPIRATION LTD | 14203666 | WD18 | ≈0.4 km |
| LIGHTHOUSE ELECTRICAL & PLUMBING LTD | 16996456 | WD18 | ≈0.6 km |
| AGCOOLINGSERVICES LTD | 17218067 | WD18 | ≈0.6 km |
Company record
| Field | Value |
|---|---|
| Company number | 10233653 |
| Name | DPH MECHANICAL LTD |
| Status | Active |
| Incorporated | 15 Jun 2016 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | WD18 7RZ |
| Outcode | WD18 |
| 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 10233653 |
Companies House record: DPH MECHANICAL LTD, company 10233653, 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.