Hemel Hempsted: plumbing, heating and air-conditioning companies
Hemel Hempsted has 1 plumbing, heating and air-conditioning companies (SIC 43220) and 0 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 HP2, summer 2026 had ≈10 nights above 18 °C there (8 times the 1991–2020 average of 1.3).
SIC 43220
Open a company
ENVIRONMENTAL COOLING (UK) LIMITED, incorporated 2004, status Liquidation.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| ENVIRONMENTAL COOLING (UK) LIMITED | 2004 | Liquidation | HP2 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| No SIC 43210 or 43290 company in this town | — | — | — | — |
Nearest plumbing companies within 25 km
2,808 plumbing companies (SIC 43220) have a registered office within 25 km. The nearest 10 are listed.
| Company | Number | District | Distance |
|---|---|---|---|
| BIRDSALL NETWORKS LIMITED | 01210655 | HP2 | under 0.1 km |
| BIRDSALL AIR CONDITIONING LTD. | 02834478 | HP2 | under 0.1 km |
| BIRDSALL GROUP LIMITED | 05932214 | HP2 | under 0.1 km |
| AIR CONDITIONING LONDON LIMITED | 09047912 | HP2 | under 0.1 km |
| BIRDSALL DECARBONISATION LIMITED | 16020609 | HP2 | under 0.1 km |
| BIRDSALL TECHNICAL SERVICES LIMITED | 16324442 | HP2 | under 0.1 km |
| TOTAL ABILITY LIMITED | 08282748 | HP2 | ≈0.4 km |
| SALIX MECHANICAL LTD | 14667789 | HP2 | ≈0.4 km |
| RAPID RINSE DRAINAGE & GUTTERING LTD | 15961764 | HP2 | ≈0.4 km |
| RED & BLUE AIR CONDITIONING LTD | 15836398 | HP2 | ≈0.5 km |
Heat and planning around Hemel Hempsted
In Hemel Hempsted 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). The figure is the household-weighted mean of 1 postcode districts where these offices are registered.
0% of sampled postcodes in Hemel Hempsted sit in a conservation area (987 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.