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J H VENTILATION SERVICES LTD: plumbing, heating and air-conditioning company in Portsmouth
J H VENTILATION SERVICES LTD is an active limited company (no. 07647801), incorporated in 2011, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in PO4 (Portsmouth), and 362 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
362 similar companies within 10 km. Portsmouth
What homes around PO4 need
In PO4 last summer (2026) there were ≈27 nights that stayed above 18 °C — 9 times the 1991–2020 average of 2.9 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
16% of sampled postcodes in PO4 sit in a conservation area (on-record, 740 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 |
|---|---|---|---|
| TENSEN SOLAR LIMITED | 15834243 | PO4 | ≈0.3 km |
| P.M GAS HEATING & PLUMBING LIMITED | 11405181 | PO4 | ≈0.3 km |
| AQUAFIX 24/7 LTD | 16306659 | PO4 | ≈0.3 km |
| MAXI SOLUTIONS LIMITED | 15293326 | PO5 | ≈0.4 km |
| R-GAS HEATING LTD | 15358021 | PO5 | ≈0.5 km |
| PBS PLUMBING & BUILDING LTD | 16369041 | PO5 | ≈0.5 km |
| AQUAHEAT 4 U LTD | 16748375 | PO5 | ≈0.6 km |
| TAWSON LIMITED | 14491594 | PO5 | ≈0.7 km |
| GASWORKS MAINTENANCE LTD | 09528771 | PO5 | ≈0.8 km |
| DAVIES & DAVIES PLUMBING AND HEATING LTD | 11485677 | PO5 | ≈0.8 km |
Company record
| Field | Value |
|---|---|
| Company number | 07647801 |
| Name | J H VENTILATION SERVICES LTD |
| Status | Active |
| Incorporated | 25 May 2011 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | PO4 0QZ |
| Outcode | PO4 |
| 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 07647801 |
Companies House record: J H VENTILATION SERVICES LTD, company 07647801, 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.