Home / Installers / London
HEAT GAIN LIMITED: plumbing, heating and air-conditioning company in London
HEAT GAIN LIMITED is an active limited company (no. 15156543), incorporated in 2023, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in SE25 (London), and 1,640 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
1,640 similar companies within 10 km. London
What homes around SE25 need
In SE25 last summer (2026) there were ≈10 nights that stayed above 18 °C — 5 times the 1991–2020 average of 1.9 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
10% of sampled postcodes in SE25 sit in a conservation area (on-record, 637 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 |
|---|---|---|---|
| D&T REFRIGERATION LIMITED | 10355806 | SE25 | under 0.1 km |
| FRONCZAK ENTERPRISE LIMITED | 16985166 | SE25 | under 0.1 km |
| INSTALLATION PERFECTION LTD. | 10615601 | SE25 | ≈0.1 km |
| COPA BUILDING SERVICES LIMITED | 17234537 | SE25 | ≈0.1 km |
| VESEMIR LTD | 15836847 | SE25 | ≈0.4 km |
| ANG CONSTRUCT LTD | 12121020 | SE25 | ≈0.4 km |
| GASTECTOR HEATING AND PLUMBING LTD | 14546861 | SE25 | ≈0.5 km |
| MCKAY JW HOME SOLUTIONS LIMITED | 10517064 | SE25 | ≈0.5 km |
| ATOZ ENGINEERING LTD | 11547945 | SE25 | ≈0.6 km |
| ALBASEM UK LIMITED | 14500206 | SE25 | ≈0.6 km |
Company record
| Field | Value |
|---|---|
| Company number | 15156543 |
| Name | HEAT GAIN LIMITED |
| Status | Active |
| Incorporated | 22 Sep 2023 |
| SIC | 43220 · plumbing, heat and air-conditioning installation; 43999 |
| Registered office postcode | SE25 6AQ |
| Outcode | SE25 |
| 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 15156543 |
Companies House record: HEAT GAIN LIMITED, company 15156543, 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.