Home / Installers / London
SIS SYSTEMY UK LTD.: plumbing, heating and air-conditioning company in London
SIS SYSTEMY UK LTD. is an active limited company with a proposal to strike off (no. 15527049), incorporated in 2024, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in SE1 (London), and 3,698 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
3,698 similar companies within 10 km. London
What homes around SE1 need
In SE1 last summer (2026) there were ≈10 nights that stayed above 18 °C — 5 times the 1991–2020 average of 1.9 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
32% of sampled postcodes in SE1 sit in a conservation area (on-record, 1,996 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 |
|---|---|---|---|
| KYDD AC & REFRIGERATION LTD | 15053740 | SE1 | ≈0.1 km |
| J PEARSON TRADING LTD | 15074774 | SE1 | ≈0.5 km |
| REC ADVANCED MECHANICAL LTD | 17149915 | SE1 | ≈0.5 km |
| MITIE BUILT ENVIRONMENT LIMITED | 00972457 | SE1 | ≈0.6 km |
| MITIE TECHNICAL SERVICES LIMITED | 02798048 | SE1 | ≈0.6 km |
| J C A ENGINEERING LTD | 04433957 | SE1 | ≈0.6 km |
| CLIMATEMP TECHNICAL SERVICES LTD | 07117719 | SE1 | ≈0.6 km |
| H2O SURREY QUAYS LIMITED | 08475874 | SE1 | ≈0.6 km |
| FAIR HEAT LIMITED | 09408296 | SE1 | ≈0.6 km |
| CODDAN REFURBISHMENT AND RENOVATION CONTRACTORS LTD | 05639035 | EC3R | ≈0.7 km |
Company record
| Field | Value |
|---|---|
| Company number | 15527049 |
| Name | SIS SYSTEMY UK LTD. |
| Status | Active - Proposal to Strike off |
| Incorporated | 27 Feb 2024 |
| SIC | 43220 · plumbing, heat and air-conditioning installation; 41100; 43330; 43390 |
| Registered office postcode | SE1 2RE |
| Outcode | SE1 |
| 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 15527049 |
Companies House record: SIS SYSTEMY UK LTD., company 15527049, 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.