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SUSTAIN HEAT LIMITED: plumbing, heating and air-conditioning company in Watford
SUSTAIN HEAT LIMITED is an active limited company (no. 15421029), incorporated in 2024, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in WD24 (Watford), and 659 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
659 similar companies within 10 km. Watford
What homes around WD24 need
In WD24 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).
2% of sampled postcodes in WD24 sit in a conservation area (on-record, 531 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 |
|---|---|---|---|
| SUSTAIN HOMES LIMITED | 12888787 | WD24 | under 0.1 km |
| ABTAP LIMITED | 04807591 | WD24 | under 0.1 km |
| P. J. HEATING AND PLUMBING LIMITED | 06689444 | WD24 | ≈0.2 km |
| LDF GAS SOLUTIONS LTD | 17078543 | WD24 | ≈0.3 km |
| MI PRO SERVICES LIMITED | 09258941 | WD24 | ≈0.3 km |
| SAVE YOUR ENERGY LTD | 07308920 | WD24 | ≈0.4 km |
| ROBERTS HEATING LTD | 14314094 | WD24 | ≈0.4 km |
| AVENUE HEATING LTD | 11120402 | WD24 | ≈0.5 km |
| GAS ECO HEAT LTD | 17253181 | WD24 | ≈0.5 km |
| WATFORD GROUP LTD | 07598186 | WD24 | ≈0.6 km |
Company record
| Field | Value |
|---|---|
| Company number | 15421029 |
| Name | SUSTAIN HEAT LIMITED |
| Status | Active |
| Incorporated | 17 Jan 2024 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | WD24 7XA |
| Outcode | WD24 |
| 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 15421029 |
Companies House record: SUSTAIN HEAT LIMITED, company 15421029, 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.