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REACT4 LTD: plumbing, heating and air-conditioning company in Hemel Hempstead
REACT4 LTD is an active limited company with a proposal to strike off (no. 10761966), incorporated in 2017, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in HP2 (Hemel Hempstead), and 202 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 - Proposal to Strike off
Within 10 km
202 similar companies within 10 km. Hemel Hempstead
What homes around HP2 need
In HP2 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).
0% of sampled postcodes in HP2 sit in a conservation area (on-record, 987 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 |
|---|---|---|---|
| DONALD HEATING & PLUMBING SERVICES LIMITED | 15270246 | HP1 | ≈1.6 km |
| CLIMATE FACILITIES LTD | 16610420 | HP1 | ≈1.9 km |
| NICOLAS PLUMBING LTD | 13004330 | HP1 | ≈2.7 km |
| SLCOOLING LTD | 16489403 | HP2 | ≈2.7 km |
| HERITAGE HPR LTD | 11860420 | HP2 | ≈2.7 km |
| TRUE FLAME GAS SERVICES LIMITED | 04922750 | HP1 | ≈2.9 km |
| ACTIVE HEATING & RENEWABLES LTD | 06979207 | HP1 | ≈3.0 km |
| SUBCITY PROPERTY SERVICES LTD | 08484513 | HP1 | ≈3.0 km |
| LEON’S PLUMBING & CONSTRUCTION LIMITED | 15117571 | HP2 | ≈3.1 km |
| DC PRIME HEATING LIMITED | 16058698 | HP2 | ≈3.1 km |
Company record
| Field | Value |
|---|---|
| Company number | 10761966 |
| Name | REACT4 LTD |
| Status | Active - Proposal to Strike off |
| Incorporated | 9 May 2017 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | HP2 6EY |
| Outcode | HP2 |
| 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 10761966 |
Companies House record: REACT4 LTD, company 10761966, status Active - Proposal to Strike off, 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.