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HOLYWELL HEATING LTD: plumbing, heating and air-conditioning company in Northampton
HOLYWELL HEATING LTD is an active limited company (no. 16972426), incorporated in 2026, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in NN3 (Northampton), and 265 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
265 similar companies within 10 km. Northampton
What homes around NN3 need
In NN3 last summer (2026) there were ≈8 nights that stayed above 18 °C — 7 times the 1991–2020 average of 1.1 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
3% of sampled postcodes in NN3 sit in a conservation area (on-record, 1,315 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 |
|---|---|---|---|
| NORTHANTS BOILER SPECIALISTS LTD | 12703333 | NN3 | under 0.1 km |
| JOHNSONS PLUMBING AND HEATING LTD | 12393687 | NN3 | ≈0.9 km |
| HCB PLUMBING AND BATHROOMS LIMITED | 12390232 | NN3 | ≈1.4 km |
| JOE HARBER PLUMBING & HEATING LTD | 17152793 | NN3 | ≈1.4 km |
| ADVANCE HEATING AND PLUMBING LTD | 15325255 | NN3 | ≈1.4 km |
| NORTHANTS HOMES LIMITED | 15845315 | NN3 | ≈1.4 km |
| HEATON PLUMBING & HTG LTD | 17296482 | NN3 | ≈1.7 km |
| DMZCONSTRUCT LTD | 15904540 | NN3 | ≈1.7 km |
| CO2 GAS & HEATING LTD | 17242314 | NN3 | ≈1.7 km |
| S&T BUILDING & MAINTENANCE LTD | 17021979 | NN3 | ≈1.9 km |
Company record
| Field | Value |
|---|---|
| Company number | 16972426 |
| Name | HOLYWELL HEATING LTD |
| Status | Active |
| Incorporated | 19 Jan 2026 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | NN3 9EU |
| Outcode | NN3 |
| 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 16972426 |
Companies House record: HOLYWELL HEATING LTD, company 16972426, 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.