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A.S.L. LIMITED: plumbing, heating and air-conditioning company in Guildford
A.S.L. LIMITED is an active limited company (no. 03648095), incorporated in 1998, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in GU1 (Guildford), and 185 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
185 similar companies within 10 km. Guildford
What homes around GU1 need
In GU1 last summer (2026) there were ≈9 nights that stayed above 18 °C — 5 times the 1991–2020 average of 1.7 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
25% of sampled postcodes in GU1 sit in a conservation area (on-record, 1,040 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 |
|---|---|---|---|
| JACOB AND JACOB HEATING LTD | 10949745 | GU1 | ≈0.1 km |
| ELITE AIRCON INSTALLATIONS LTD | 14940809 | GU1 | ≈0.2 km |
| TEMPEST AIR CONDITIONING LTD | 16512664 | GU1 | ≈0.8 km |
| LJH HEATING AND PLUMBING LTD | 14714121 | GU1 | ≈0.9 km |
| DK PLUMBING & HEATING (GUILDFORD) LTD | 13312711 | GU4 | ≈0.9 km |
| J J RADFORD PLUMBING & PROPERTY MAINTENANCE LTD | 10947364 | GU4 | ≈1.1 km |
| CHEE HEATING AND PLUMBING LTD | 14689141 | GU4 | ≈1.4 km |
| NAB PLUMBING AND HEATING LIMITED | 09211677 | GU2 | ≈1.4 km |
| CALIBRE ENERGY SOLUTIONS LTD | 10980789 | GU2 | ≈1.6 km |
| ECOFLAME PLUMBING & HEATING LIMITED | 07315746 | GU2 | ≈1.6 km |
Company record
| Field | Value |
|---|---|
| Company number | 03648095 |
| Name | A.S.L. LIMITED |
| Status | Active |
| Incorporated | 12 Oct 1998 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | GU1 1RB |
| Outcode | GU1 |
| 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 03648095 |
Companies House record: A.S.L. LIMITED, company 03648095, 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.