Here at Calgas, as experienced gas engineers, we not only specialise in boiler services but unvented hot water systems too. We operate in Essex, North and East London and provide some of the most competitive prices in the area. Not only are our team of engineers Gas Safe registered, but we are also fully qualified to work with unvented heating systems.

As skilled gas engineers with many years of experience in the trade, we emphasise to our customers the importance of leaving unvented cylinder repairs and installations to ourselves, the professionals. If installed incorrectly, unvented hot water systems can be highly dangerous and in the wrong hands, prove potentially fatal.

Outstanding Service

Calum is my “go-to” person when it comes to heating and plumbing, he is reliable and his services are always reasonably priced.

Rob Groves, Stanford Le Hope
Amazing Service

I cannot recommend Calum highly enough, his work is neat and tidy and his prices are very reasonable.

An outstanding service by Calgas. From my first callout for an emergency boiler repair, to general plumbing to fitting a brand new boiler and heating system, Callum has always been 100% efficient, reliable and effective in all aspects of his job. I cannot recommend him and his company enough from small to major plumbing and heating jobs. Sam Brookes, Victoria Park, London E9.
Sam, Hackney

Calum is the best plumber I had and the only one you will ever need.

Mrs. G, Stanford-le-Hope

Having repaired, serviced and installed many unvented Megaflo, Potterton and Glad Hill systems, we have the necessary experience and expertise to repair and install your unvented water heating system. No matter what the issue is, whether it is a problem with your hot water, water pressure, or even if your system requires servicing, we’re the perfect people for the job.

For efficiency we always carry a range of spare parts with us when on a call out, ranging from cold water valves to immersions. Should we not have the part that your system requires, it can easily be ordered and installed within 48 hours. However, most parts can be ordered and fitted within only 24!

For reliable, honest and professional unvented cylinder services, please don’t hesitate to call us on 07585 660494. We can provide you with an over the phone quotation or a free home visit and quotation at a time convenient for you.


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