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COSY CASTLE LTD: plumbing, heating and air-conditioning company in Sheffield
COSY CASTLE LTD is an active limited company (no. 15526875), incorporated in 2024, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in S7 (Sheffield), and 343 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
343 similar companies within 10 km. Sheffield
What homes around S7 need
In S7 last summer (2026) there were ≈3 nights that stayed above 18 °C — 15 times the 1991–2020 average of 0.2 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
24% of sampled postcodes in S7 sit in a conservation area (on-record, 302 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 |
|---|---|---|---|
| DAA'D ENGINEERING SERVICES LTD | 12998508 | S7 | ≈0.2 km |
| MH PROPERTY SOLUTION LTD | 14654683 | S7 | ≈0.2 km |
| JC PLUMBING & HEATING SOLUTIONS LTD | 13093111 | S8 | ≈0.5 km |
| HEATING INSTALLATIONS LIMITED | 12826206 | S2 | ≈0.5 km |
| SHEFFIELD BATHROOM COMPANY LTD | 14848211 | S2 | ≈0.5 km |
| DUBIK PLUMBING & BATHROOMS LTD | 15922381 | S2 | ≈0.5 km |
| MPK ENGINEERS LIMITED | 14737853 | S8 | ≈0.6 km |
| OSBORNE (UK) LIMITED | 06148324 | S2 | ≈0.6 km |
| SAFETASK LIMITED | 02226769 | S7 | ≈0.6 km |
| HALLAMSHIRE ENERGY SERVICES LTD | 08557957 | S2 | ≈0.6 km |
Company record
| Field | Value |
|---|---|
| Company number | 15526875 |
| Name | COSY CASTLE LTD |
| Status | Active |
| Incorporated | 27 Feb 2024 |
| SIC | 43220 · plumbing, heat and air-conditioning installation; 46740 |
| Registered office postcode | S7 1DH |
| Outcode | S7 |
| 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 15526875 |
Companies House record: COSY CASTLE LTD, company 15526875, 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.