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GSW GAS LTD: plumbing, heating and air-conditioning company in Hemel Hempstead
GSW GAS LTD is an active limited company (no. 14825506), incorporated in 2023, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in HP1 (Hemel Hempstead), and 223 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
223 similar companies within 10 km. Hemel Hempstead
What homes around HP1 need
In HP1 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).
5% of sampled postcodes in HP1 sit in a conservation area (on-record, 676 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 |
|---|---|---|---|
| LAWLER HEATING AND PLUMBING LIMITED | 13638560 | HP1 | ≈0.2 km |
| ACTIVE HEATING & RENEWABLES LTD | 06979207 | HP1 | ≈0.5 km |
| ECO THERM HEATING LTD | 15202707 | HP1 | ≈0.7 km |
| SUBCITY PROPERTY SERVICES LTD | 08484513 | HP1 | ≈0.7 km |
| V & F GIDDINGS PROPERTY MAINTENANCE LIMITED | 04939224 | HP1 | ≈0.7 km |
| NICOLAS PLUMBING LTD | 13004330 | HP1 | ≈0.8 km |
| TRUE FLAME GAS SERVICES LIMITED | 04922750 | HP1 | ≈0.9 km |
| LUXE BATHROOM SPECIALISTS LIMITED | 12589002 | HP1 | ≈1.0 km |
| COURTNEY PROPERTY SERVICES LIMITED | 16760670 | HP1 | ≈1.0 km |
| INDEPENDENCE PLUMBING & HEATING LTD | 12396045 | HP1 | ≈1.2 km |
Company record
| Field | Value |
|---|---|
| Company number | 14825506 |
| Name | GSW GAS LTD |
| Status | Active |
| Incorporated | 25 Apr 2023 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | HP1 2PP |
| Outcode | HP1 |
| 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 14825506 |
Companies House record: GSW GAS LTD, company 14825506, 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.