Hatfield, Hertfordshire: plumbing, heating and air-conditioning companies
Hatfield, Hertfordshire has 1 plumbing, heating and air-conditioning companies (SIC 43220) and 0 electrical and other installation companies registered here (Companies House, 1 Sep 2026); 0 are MCS-certified for air-to-air yet. If the office is in AL9, summer 2026 had ≈11 nights above 18 °C there (7 times the 1991–2020 average of 1.5).
SIC 43220
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A T HEATING MODULES LTD, incorporated 2017, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| A T HEATING MODULES LTD | 2017 | Active | AL9 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| No SIC 43210 or 43290 company in this town | — | — | — | — |
Nearest plumbing companies within 25 km
4,163 plumbing companies (SIC 43220) have a registered office within 25 km. The nearest 10 are listed.
| Company | Number | District | Distance |
|---|---|---|---|
| MANSELLS HEATING LTD | 14515384 | AL10 | ≈0.3 km |
| CHEROKEE CONSULTING LIMITED | 04908719 | AL9 | ≈0.4 km |
| C & A ENGINEERING SERVICES LTD | 12317900 | AL9 | ≈0.5 km |
| WLD PROPERTIES LIMITED | 10748303 | AL9 | ≈0.5 km |
| VAL PROPERTY MAINTENANCE LTD | 14051550 | AL10 | ≈0.5 km |
| ESH PLUMBING & HEATING LTD | 12120591 | AL10 | ≈0.6 km |
| SUREFLOW (2023) LTD | 14612026 | AL9 | ≈0.7 km |
| SCOTT-ENGLISH PLUMBING SERVICES LIMITED | 13697155 | AL10 | ≈0.8 km |
| BAKER SMITH LIMITED | 06057811 | AL9 | ≈0.8 km |
| ASP PLUMBING AND HEATING SERVICES LIMITED | 10269917 | AL9 | ≈0.8 km |
Heat and planning around Hatfield, Hertfordshire
In Hatfield, Hertfordshire last summer (2026) there were ≈11 nights that stayed above 18 °C — 7 times the 1991–2020 average of 1.5 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities). The figure is the household-weighted mean of 1 postcode districts where these offices are registered.
11% of sampled postcodes in Hatfield, Hertfordshire sit in a conservation area (428 live postcodes across 1 districts).
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).
Companies House snapshot 1 Sep 2026, 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. Hot nights: ERA5-ARCO, June–August, minimum at or above 18 °C, household-weighted across the districts where these offices are registered, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points, snapshot 25 Sep 2026. Distances are an equirectangular approximation to 0.1 km.
Better than a town directory that only lists names: each plumbing company links to its Companies House record and the local hot-night count.