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NR18: plumbing, heating and air-conditioning companies in Norwich
NR18 (Norwich) has 2 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 6 electrical and other installation companies (Companies House, 1 Sep 2026); 0 are MCS-certified for air-to-air yet. If the summer is the question, NR18 had ≈6 nights above 18 °C in 2026 (4 times the 1991–2020 average of 1.6).
NR18
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INDUSTRIAL DOMESTIC BOILER SERVICES LTD, incorporated 2015, status Active.
Plumbing, heating and air-conditioning companies
| Company | Incorporated | Status | District |
|---|---|---|---|
| INDUSTRIAL DOMESTIC BOILER SERVICES LTD | 2015 | Active | NR18 |
| PITCH AIR LIMITED | 2012 | Active | NR18 |
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| CD SERVICES (NORFOLK) LTD | 43290 · other construction installation | 2025 | Active | NR18 |
| FLOWLINE PLASTICS LTD | 43290 · other construction installation | 2009 | Active | NR18 |
| KC ELECTRICAL CONTRACTING LTD | 43210 · electrical installation | 2021 | Active | NR18 |
| MACROW HEATING LTD | 43290 · other construction installation | 2025 | Active | NR18 |
| TRADITIONAL RAINWATER SYSTEMS LTD | 43290 · other construction installation | 2018 | Active | NR18 |
| WALKER DESIGN AND INSTALLATION LIMITED | 43290 · other construction installation | 2010 | Active | NR18 |
What homes around NR18 need
In NR18 last summer (2026) there were ≈6 nights that stayed above 18 °C — 4 times the 1991–2020 average of 1.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
18% of sampled postcodes in NR18 sit in a conservation area (on-record, 709 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).
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 for NR18, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in NR18, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in NR18, with that district's hot nights and planning rule.