Castle Cary: plumbing, heating and air-conditioning companies
Castle Cary has 7 plumbing, heating and air-conditioning companies (SIC 43220) and 9 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 BA7, summer 2026 had ≈5 nights above 18 °C there (7 times the 1991–2020 average of 0.7).
SIC 43220
Open a company
BART MECHANICAL SERVICES LIMITED, incorporated 2007, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| BART MECHANICAL SERVICES LIMITED | 2007 | Active | BA7 |
| GBHEATINGTECH LTD | 2022 | Active | BA7 |
| KEVAN DAVIS PLUMBING & HEATING LTD | 2006 | Active | BA7 |
| MARK FERRETT PLUMBING AND HEATING LTD | 2015 | Active | BA7 |
| SIMON MESSENGER PLUMBING & HEATING LTD | 2013 | Active | BA7 |
| 21 DEGREES C LIMITED | 2006 | Active | BA7 |
| MCH INSTALLATIONS LIMITED | 2006 | Active | BA7 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| ARL ELECTRICAL SERVICES LTD | 43210 · electrical installation | 2019 | Active | BA7 |
| CASTLE ELECTRICAL SERVICES SOUTH WEST LTD | 43210 · electrical installation | 2016 | Active | BA7 |
| CHAPEL HEATING LIMITED | 43210 · electrical installation | 2003 | Active | BA7 |
| P J DUCTWORK SERVICES LIMITED | 43290 · other construction installation | 2005 | Active | BA7 |
| CONTROLLED CLIMATE LIMITED | 43290 · other construction installation | 2003 | Active | BA7 |
| HUTCHINS ELECTRICAL CONTRACTORS LIMITED | 43210 · electrical installation | 2015 | Active | BA7 |
| MAINSTONES ELECTRICAL LIMITED | 43210 · electrical installation | 2012 | Active | BA7 |
| B HOPKINS CONTRACTORS LTD | 43290 · other construction installation; 77320 | 2023 | Active | BA7 |
| POWER SOURCE RECRUITMENT LTD LTD | 43210 · electrical installation | 2025 | Active - Proposal to Strike off | BA7 |
Heat and planning around Castle Cary
In Castle Cary last summer (2026) there were ≈5 nights that stayed above 18 °C — 7 times the 1991–2020 average of 0.7 (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.
27% of sampled postcodes in Castle Cary sit in a conservation area (202 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.