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SONTAG & SONS PLUMBING LTD: plumbing, heating and air-conditioning company in Harlow
SONTAG & SONS PLUMBING LTD is an active limited company (no. 12784040), incorporated in 2020, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in CM20 (Harlow), and 266 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
266 similar companies within 10 km. Harlow
What homes around CM20 need
In CM20 last summer (2026) there were ≈11 nights that stayed above 18 °C — 7 times the 1991–2020 average of 1.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
9% of sampled postcodes in CM20 sit in a conservation area (on-record, 627 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 |
|---|---|---|---|
| KFK BUILDING SERVICES LTD | 15198736 | CM20 | ≈0.5 km |
| CHILL OUT AC LTD | 17348860 | CM20 | ≈0.7 km |
| ADAPT PLUMBING AND HEATING SERVICES LTD | 15220837 | CM17 | ≈0.8 km |
| SLATE MEC LTD | 15724059 | CM17 | ≈0.8 km |
| FTB GAS AND HEATING LTD | 16962000 | CM17 | ≈0.8 km |
| R1 GAS LIMITED | 12415178 | CM17 | ≈0.8 km |
| FITTER HOME LIMITED | 07959377 | CM20 | ≈0.9 km |
| CASCADE SYSTEMS (UK) LIMITED | 02430636 | CM20 | ≈0.9 km |
| PODEK LIMITED | 12447047 | CM17 | ≈0.9 km |
| EVE HEATING AND PLUMBING LTD | 15459168 | CM20 | ≈1.1 km |
Company record
| Field | Value |
|---|---|
| Company number | 12784040 |
| Name | SONTAG & SONS PLUMBING LTD |
| Status | Active |
| Incorporated | 31 Jul 2020 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | CM20 3DW |
| Outcode | CM20 |
| 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 12784040 |
Companies House record: SONTAG & SONS PLUMBING LTD, company 12784040, 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.