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S.J. DYER LIMITED: plumbing, heating and air-conditioning company in Borehamwood
S.J. DYER LIMITED is an active limited company (no. 08890078), incorporated in 2014, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in WD6 (Borehamwood), and 1,219 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
1,219 similar companies within 10 km. Borehamwood
What homes around WD6 need
In WD6 last summer (2026) there were ≈11 nights that stayed above 18 °C — 7 times the 1991–2020 average of 1.5 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
3% of sampled postcodes in WD6 sit in a conservation area (on-record, 1,073 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 |
|---|---|---|---|
| M. & J. LOSSOS & CO. LIMITED | 00345370 | WD6 | under 0.1 km |
| GASCO&BUILT LTD. | 05722683 | WD6 | under 0.1 km |
| CAST HEATING & PLUMBING LTD | 06405759 | WD6 | under 0.1 km |
| BLUE WATER SYSTEMS LIMITED | 08179757 | WD6 | under 0.1 km |
| G & S HEATING ENGINEERING LIMITED | 08876786 | WD6 | under 0.1 km |
| P C PLUMBING CONTRACTORS LTD | 09222151 | WD6 | under 0.1 km |
| PITTVILLE BUILDING COMPANY LTD | 10327636 | WD6 | under 0.1 km |
| REEVES GROUP LTD | 10425241 | WD6 | under 0.1 km |
| M CRAWLEY LIMITED | 10706187 | WD6 | under 0.1 km |
| BLUE WATER RENEWABLES LTD | 13973436 | WD6 | under 0.1 km |
Company record
| Field | Value |
|---|---|
| Company number | 08890078 |
| Name | S.J. DYER LIMITED |
| Status | Active |
| Incorporated | 12 Feb 2014 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | WD6 1QQ |
| Outcode | WD6 |
| 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 08890078 |
Companies House record: S.J. DYER LIMITED, company 08890078, 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.