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JLM HEAT SOURCE LTD: plumbing, heating and air-conditioning company in Gravesend
JLM HEAT SOURCE LTD is an active limited company (no. 17255964), incorporated in 2026, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in DA13 (Gravesend), and 286 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
286 similar companies within 10 km. Gravesend
What homes around DA13 need
In DA13 last summer (2026) there were ≈10 nights that stayed above 18 °C — 4 times the 1991–2020 average of 2.3 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
9% of sampled postcodes in DA13 sit in a conservation area (on-record, 376 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 |
|---|---|---|---|
| MARK'S GAS-SAFETY.COM LIMITED | 11569340 | DA13 | under 0.1 km |
| LPS PLUMBING SERVICES LTD | 14540733 | DA13 | under 0.1 km |
| LUKE SCOTT STOVES LTD | 15924900 | DA13 | ≈0.1 km |
| INSPIRED BATHROOMS LIMITED | 16041688 | DA13 | ≈0.8 km |
| RELIABLE LOCAL PLUMBER LTD | 07211642 | DA13 | ≈0.8 km |
| M S COOLING LTD | 17323397 | DA13 | ≈0.8 km |
| ENIGMA AIR CONDITIONING LTD | 17211938 | TN15 | ≈2.0 km |
| GDHS PLUMBING & HEATING LTD | 08731626 | DA13 | ≈2.4 km |
| RELIABLE PLUMBER LIMITED | 05359987 | TN15 | ≈2.7 km |
| OAKHURST PROPERTY SERVICES LTD | 05449287 | TN15 | ≈2.7 km |
Company record
| Field | Value |
|---|---|
| Company number | 17255964 |
| Name | JLM HEAT SOURCE LTD |
| Status | Active |
| Incorporated | 2 Jun 2026 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | DA13 0TQ |
| Outcode | DA13 |
| 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 17255964 |
Companies House record: JLM HEAT SOURCE LTD, company 17255964, 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.