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LIQUIDAIR LTD: plumbing, heating and air-conditioning company in St Albans
LIQUIDAIR LTD is an active limited company (no. 06903502), incorporated in 2009, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in AL3 (St Albans), and 467 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
467 similar companies within 10 km. St Albans
What homes around AL3 need
In AL3 last summer (2026) there were ≈10 nights that stayed above 18 °C — 8 times the 1991–2020 average of 1.3 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
33% of sampled postcodes in AL3 sit in a conservation area (on-record, 955 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 |
|---|---|---|---|
| NG MAINTENANCE SOLUTIONS LTD | 17352111 | AL3 | ≈1.0 km |
| HEYDON PIERRE LIMITED | 07919711 | LU1 | ≈1.0 km |
| PRESTIGE COOLING LTD | 13595731 | LU1 | ≈1.0 km |
| SB PLUMBING SERVICES LTD | 16836904 | AL3 | ≈1.1 km |
| NOBLE PLUMBING AND HEATING LTD | 11755667 | AL3 | ≈1.2 km |
| PORTLAND PLUMBING LTD | 13894231 | AL3 | ≈1.4 km |
| SSGAS LIMITED | 16220582 | LU1 | ≈2.1 km |
| CADDINGTON MAINTENANCE LTD | 15627368 | LU1 | ≈2.2 km |
| IDV PLUMBING AND HEATING LTD | 11720030 | AL3 | ≈2.2 km |
| CMW HEATING LIMITED | 12992329 | LU6 | ≈2.5 km |
Company record
| Field | Value |
|---|---|
| Company number | 06903502 |
| Name | LIQUIDAIR LTD |
| Status | Active |
| Incorporated | 12 May 2009 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | AL3 8QD |
| Outcode | AL3 |
| 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 06903502 |
Companies House record: LIQUIDAIR LTD, company 06903502, 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.