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KJW (PLUMBING & HEATING) LIMITED: plumbing, heating and air-conditioning company in Stevenage
KJW (PLUMBING & HEATING) LIMITED is an active limited company (no. 04717873), incorporated in 2003, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in SG1 (Stevenage), and 229 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
229 similar companies within 10 km. Stevenage
What homes around SG1 need
In SG1 last summer (2026) there were ≈9 nights that stayed above 18 °C — 6 times the 1991–2020 average of 1.5 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
7% of sampled postcodes in SG1 sit in a conservation area (on-record, 1,269 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 |
|---|---|---|---|
| IGNITE INSTALLATIONS LTD | 07490683 | SG1 | under 0.1 km |
| A.T.JAMES PLUMBING & HEATING LIMITED | 08212742 | SG1 | under 0.1 km |
| FOXCO PLUMBING & HEATING LIMITED | 15053636 | SG1 | under 0.1 km |
| S C DUNCAN STEVENAGE LTD | 12730551 | SG1 | ≈0.1 km |
| D G MAINTENANCE SERVICES LIMITED | 03771169 | SG1 | ≈0.2 km |
| HOMELEA MAINTENANCE LIMITED | 06818501 | SG1 | ≈0.2 km |
| G & Y PLUMBING & HEATING LIMITED | 06901100 | SG1 | ≈0.2 km |
| YT PLUMBING AND HEATING LIMITED | 10472724 | SG1 | ≈0.2 km |
| YT PLUMBING AND HEATING SERVICES LIMITED | 12679776 | SG1 | ≈0.2 km |
| HEAT ELITE LIMITED | 12854428 | SG1 | ≈0.2 km |
Company record
| Field | Value |
|---|---|
| Company number | 04717873 |
| Name | KJW (PLUMBING & HEATING) LIMITED |
| Status | Active |
| Incorporated | 1 Apr 2003 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | SG1 3AW |
| Outcode | SG1 |
| 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 04717873 |
Companies House record: KJW (PLUMBING & HEATING) LIMITED, company 04717873, 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.