Best Plumbing & Heating in Londonderry
Ranked by Google ratings — updated 26 October 2026
As of 26 October 2026, LocallyIrish.ie ranks 4 plumbing & heating in Londonderry, Co. Derry by customer rating. The top-rated is CJ O’Kane Plumbing & Heating Services, with 5.0 stars from 12 Google ratings. Elmwood Boiler Services follows with 4.7 from 34 Google ratings.
How we rank
Each business is scored on its average rating weighted by how many ratings it has, so a handful of perfect scores cannot outrank hundreds of near-perfect ones. Reviews left on LocallyIrish.ie and the business's Google rating are counted together; the rating shown on each entry is labelled with its source. A Google rating needs at least 5 ratings to count. Businesses without enough ratings are listed separately, unranked. Paid listings cannot buy a higher position. The list refreshes hourly.
CJ O’Kane Plumbing & Heating Services
Elmwood Boiler Services
Maiden City Sweep & Heating Services
PV Boiler Services
Also in Londonderry — not enough ratings to rank yet
GMC plumbing and heating ltd
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The Shower Doctor
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Thompson NI
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All Emergency Plumbing
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Acm Plumbing & Heating
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Mnheatingservices
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S and E
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S and E Plumbing and Heating
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The Home Service
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AquaFix Leak Detection
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Trace Source
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Eco-Heating - Heat Pump Services
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Maiden City Boiler Service
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Original Heating Limited
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E R M Mechanical Services Ltd
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Bateson Bros Ltd
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Tom Stevenson Plumbing & Heating
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Heating Parts Warehouse
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EMD Plumbing & Heating
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CSP Mechanical
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JenBe Boiler Services
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P lynch Plumbing & heating
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Clearflow
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