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21 DEGREES HEATING LIMITED: plumbing, heating and air-conditioning company in Harrow
21 DEGREES HEATING LIMITED is an active limited company (no. 05140422), incorporated in 2004, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in HA1 (Harrow), and 1,892 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
1,892 similar companies within 10 km. Harrow
What homes around HA1 need
In HA1 last summer (2026) there were ≈12 nights that stayed above 18 °C — 8 times the 1991–2020 average of 1.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
12% of sampled postcodes in HA1 sit in a conservation area (on-record, 954 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 |
|---|---|---|---|
| HUGGINS & SQUIRE LIMITED | 01195904 | HA1 | under 0.1 km |
| MOTACUS PLUMBING & HEATING LIMITED | 12712518 | HA1 | under 0.1 km |
| FIF PLUMBING AND HEATING LIMITED | 14732486 | HA1 | under 0.1 km |
| NIBIRU COOLING LIMITED | 17342843 | HA1 | under 0.1 km |
| B S P PLUMBING & HEATING LIMITED | 04585089 | HA1 | ≈0.1 km |
| IJ HEATING & GAS LIMITED | 12075091 | HA1 | ≈0.1 km |
| PRO PLUMBING HEATING & BOILERS LTD | 12614534 | HA1 | ≈0.1 km |
| S F SERVICES LONDON LIMITED | 14625078 | HA1 | ≈0.1 km |
| A LEVEL PROPERTY LTD | 15947690 | HA1 | ≈0.1 km |
| JNOAD LIMITED | 01922719 | HA1 | ≈0.1 km |
Company record
| Field | Value |
|---|---|
| Company number | 05140422 |
| Name | 21 DEGREES HEATING LIMITED |
| Status | Active |
| Incorporated | 28 May 2004 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | HA1 2BY |
| Outcode | HA1 |
| 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 05140422 |
Companies House record: 21 DEGREES HEATING LIMITED, company 05140422, 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.