Harrow on the Hill: plumbing, heating and air-conditioning companies
Harrow on the Hill has 1 plumbing, heating and air-conditioning companies (SIC 43220) and 1 electrical and other installation companies registered here (Companies House, 1 Sep 2026); 0 are MCS-certified for air-to-air yet. If the office is in HA1, summer 2026 had ≈12 nights above 18 °C there (8 times the 1991–2020 average of 1.6).
SIC 43220
Open a company
AGR BUILDERS LIMITED, incorporated 2011, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| AGR BUILDERS LIMITED | 2011 | Active | HA1 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| ELECGUARD LTD | 43210 · electrical installation | 2014 | Active | HA1 |
Nearest plumbing companies within 25 km
8,738 plumbing companies (SIC 43220) have a registered office within 25 km. The nearest 10 are listed.
| Company | Number | District | Distance |
|---|---|---|---|
| LONDON PLUMBER LIMITED | 10016096 | HA1 | ≈0.4 km |
| ZOOM 247 LIMITED | 10643978 | HA1 | ≈0.4 km |
| MPH PLUMBING & HEATING SOLUTIONS LIMITED | 12849782 | HA1 | ≈0.4 km |
| ADVANCED COOLING & HEATING LTD | 13904954 | HA1 | ≈0.4 km |
| AJF HEATING MECHANICAL AND ELECTRICAL SERVICES LTD | 17142687 | HA1 | ≈0.4 km |
| DRUMLIN CONSTRUCTION LTD | 02871039 | HA2 | ≈0.5 km |
| RDM WORKS LTD | 11939067 | HA1 | ≈0.5 km |
| SOLIDIFY M&E LTD | 15553527 | HA1 | ≈0.5 km |
| STEFANUTUK LTD | 11835807 | HA1 | ≈0.5 km |
| SMARTFLOW HEATING & GAS LTD | 10622881 | HA1 | ≈0.6 km |
Heat and planning around Harrow on the Hill
In Harrow on the Hill 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). The figure is the household-weighted mean of 1 postcode districts where these offices are registered.
12% of sampled postcodes in Harrow on the Hill sit in a conservation area (954 live postcodes across 1 districts).
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, June–August, minimum at or above 18 °C, household-weighted across the districts where these offices are registered, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points, snapshot 25 Sep 2026. Distances are an equirectangular approximation to 0.1 km.
Better than a town directory that only lists names: each plumbing company links to its Companies House record and the local hot-night count.