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Here at Assert Heating Services we understand the importance of impeccable heating services. We are fully insured and all projects undertaken by Assert Heating, regardless the type of work, size or client, are guaranteed for 30 days. Our clients’ satisfaction is paramount to us, as well as delivering high quality, diversified heating services. Extensive projects such as installations are guaranteed and come with a full manufacturer’s warranty.

Over the years, we managed to build our reputation as a trustworthy, reliable gas safe heating company by delivering impeccable heating and plumbing services.

In case of repairs/replacements using genuine manufacturer parts, we will make sure to pass on the warranty to our clients. Our gas safe engineers are all fully trained and skilled in a variety of areas from boiler installations to gas safety checks. We aim to complete all work to a precise, efficient standard whilst paying attention to all details.

Assert Heating Services strive to deliver the highest quality of service we can offer our customers and we wish to maintain our industry standards throughout, whilst offering second to none customer service. Assert Heating is dedicated to upholding the highest level of quality gas and heating services.


We offer extensive gas service solutions. From gas safety checks, gas safety certifications to gas leak repairs and other gas services in London.

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Our team of plumbing engineers work fast and efficiently and can carry out a range of services from routine leaks to advanced system problems.

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Our team of gas safe heating engineers carry out boiler repairs, install state of the art heating systems and implement system upgrades on a daily basis.

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Our rates

Boiler repairs starting from £79 – for all new and existing customers.

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Book an engineer

Get in touch with us today and book your next visit.

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Plumber in London