Jersey Web Directory · Plumbing & heating
Jersey, based in St Brelade
John Warrener Plumbing, Heating & Electrical Limited is a Jersey contractor for residential and commercial plumbing, heating and electrical work, established in 1987. Alongside its contracting work, a small works team led by Director Graeme Robertson takes on jobs from the smallest repairs to bathroom and heating refurbishments.
Independent listing, checked against John Warrener Ltd’s website on 21 October 2026. Not yet confirmed by the business.
At a glance
The small works team handles jobbing work, call outs for existing customers, routine maintenance, and electrical small works and contracts. The company is also a warranty agent for Aqualisa, Salamander, Mira, Hansgrohe and ACV.
Check this on John Warrener Ltd’s website ↗ (opens in a new tab)Services include underfloor heating, air source and ground source heat pumps, solar thermal heating, heat recovery, rain water harvesting and power flushing.
Check this on John Warrener Ltd’s website ↗ (opens in a new tab)For larger projects the company offers design and build, value engineering and site surveys of existing services. It also lists legionella risk assessments and domestic energy assessments.
Check this on John Warrener Ltd’s website ↗ (opens in a new tab)Go to the source
About this listing
We checked the details against John Warrener Ltd’s website (opens in a new tab) on 21 October 2026. Services and packages can change, so the links above take you straight to John Warrener Ltd for the latest information.
Jersey Web wrote this independent listing. It has not been confirmed by John Warrener Ltd, and it is not a review, recommendation or claim that John Warrener Ltd is a Jersey Web client.
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