Home / Installers / Harpenden
HERTS AIR CONDITIONING LTD: plumbing, heating and air-conditioning company in Harpenden
HERTS AIR CONDITIONING LTD is an active limited company (no. 16429081), incorporated in 2025, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in AL5 (Harpenden), and 372 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
372 similar companies within 10 km. Harpenden
What homes around AL5 need
In AL5 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).
30% of sampled postcodes in AL5 sit in a conservation area (on-record, 1,057 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 |
|---|---|---|---|
| QUANTECH AIR CONDITIONING LTD | 17203544 | AL5 | under 0.1 km |
| JINWOO PROPERTY SERVICES LIMITED | 09616366 | AL5 | ≈0.6 km |
| IGM PLUMBING, HEATING & LEAK DETECTION LIMITED | 14655480 | AL5 | ≈0.6 km |
| ROSS PLUMBING LIMITED | 06060000 | AL5 | ≈0.8 km |
| HIGHVIEW PLUMBING AND HEATING LIMITED | 08589428 | AL5 | ≈1.0 km |
| STONE GRANGE MECHANICAL SERVICES LIMITED | 11334907 | AL5 | ≈1.0 km |
| SGM RENEWABLES LTD | 14535094 | AL5 | ≈1.0 km |
| AYRTON LAWRENCE LTD | 16032072 | AL5 | ≈1.0 km |
| HURLEYS HOME RENOVATIONS LTD | 16369549 | AL5 | ≈1.0 km |
| PROFLAME HEATING LTD | 17024809 | AL5 | ≈1.0 km |
Company record
| Field | Value |
|---|---|
| Company number | 16429081 |
| Name | HERTS AIR CONDITIONING LTD |
| Status | Active |
| Incorporated | 5 May 2025 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | AL5 4AT |
| Outcode | AL5 |
| 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 16429081 |
Companies House record: HERTS AIR CONDITIONING LTD, company 16429081, 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.