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GUARDIAN CONSULTANCY SERVICES LIMITED: plumbing, heating and air-conditioning company in Hertfordshire
GUARDIAN CONSULTANCY SERVICES LIMITED is an active limited company (no. 04659879), incorporated in 2003, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in SG4 (Hertfordshire), and 273 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
273 similar companies within 10 km. Hertfordshire
What homes around SG4 need
In SG4 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).
17% of sampled postcodes in SG4 sit in a conservation area (on-record, 905 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 |
|---|---|---|---|
| LINEHAN MECHANICAL AND ELECTRICAL LIMITED | 09344264 | SG4 | under 0.1 km |
| RESPOND PLUMBING AND HEATING LIMITED | 14745895 | SG4 | under 0.1 km |
| TYRER PLUMBING & HEATING LIMITED | 13838151 | SG1 | ≈2.5 km |
| D C HEATING SYSTEMS LTD | 14109296 | SG1 | ≈2.5 km |
| GAS CHASE LIMITED | 15898555 | SG1 | ≈2.5 km |
| FAST PLUMBERS LTD | 08469352 | SG1 | ≈2.9 km |
| JR PLUMBING, HEATING AND GAS LTD | 13222833 | SG1 | ≈2.9 km |
| GAS 24 LIMITED | 05035424 | SG1 | ≈3.0 km |
| ROOM RENOV8 LTD | 16310853 | SG1 | ≈3.0 km |
| BLUE PLANET PLUMBING AND HEATING LTD | 12953643 | SG4 | ≈3.1 km |
Company record
| Field | Value |
|---|---|
| Company number | 04659879 |
| Name | GUARDIAN CONSULTANCY SERVICES LIMITED |
| Status | Active |
| Incorporated | 10 Feb 2003 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | SG4 7PT |
| Outcode | SG4 |
| 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 04659879 |
Companies House record: GUARDIAN CONSULTANCY SERVICES LIMITED, company 04659879, 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.