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HA9: plumbing, heating and air-conditioning companies in London
HA9 (London) has 2 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 8 electrical and other installation companies (Companies House, 1 Sep 2026); 0 are MCS-certified for air-to-air yet. If the summer is the question, HA9 had ≈12 nights above 18 °C in 2026 (8 times the 1991–2020 average of 1.6).
HA9
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247 HEATING LONDON LTD, incorporated 2019, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| 247 HEATING LONDON LTD | 2019 | Active | HA9 |
| HNP SOLUTIONS LONDON LTD | 2025 | Active | HA9 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| ALBIO LTD | 43210 · electrical installation | 2019 | Active | HA9 |
| BOLT ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2019 | Active | HA9 |
| GHATE CONSTRUCTION GROUP LTD | 43290 · other construction installation; 41100; 41201; 71111 | 2020 | Active | HA9 |
| GUL INSTALLING LTD | 43290 · other construction installation | 2023 | Active | HA9 |
| LNG PAINTING AND DECORATION LTD | 43290 · other construction installation; 43341 | 2024 | Active | HA9 |
| REINNA LTD | 43290 · other construction installation | 2019 | Active | HA9 |
| RT STONE LTD | 43290 · other construction installation | 2019 | Active | HA9 |
| STEVE A ELECTRICS LTD | 43210 · electrical installation | 2025 | Active | HA9 |
What homes around HA9 need
In HA9 last summer (2026) there were ≈12 nights that stayed above 18 °C — 8 times the 1991–2020 average of 1.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
6% of sampled postcodes in HA9 sit in a conservation area (on-record, 1,002 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).
Companies House snapshot 1 Sep 2026, 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. Hot nights: ERA5-ARCO for HA9, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in HA9, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in HA9, with that district's hot nights and planning rule.