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Gas Boilers

At Assured Heating Essex, our preferred manufacturer of central heating gas boilers is the one we consider to be the most reliable and produce the most efficient boilers: Worcester Bosch. In fact, their range of gas boilers won the ‘Which?’ best buy award for 2012, 2013, 2014, 2015 and now 2016. Assured Heating Essex is a preferred installer of Worcester Bosch boiler systems within the Essex area.

Not only do they offer fantastic boiler efficiency with their range of gas and oil boilers, but the quality of their products make them the perfect choice for your new home boiler. Whatever your need, Worcester Bosch have a new boiler to suit your household. If you follow this link and answer a few simple questions, you will find the model best suited to your property and the household requirement’s.

New high efficiency boilers are all ‘A’ rated in the energy efficiency chart and provide an efficiency of at least 90%. This means for every £1 you spend on fuel, at least 90 pence will get converted into useful heat. Compare that to standard boiler systems that generally only manage a 50% to 60% boiler efficiency rating at best, and you can see where savings can be found.

It’s important that you get the correct type of boiler to suit your hot water and central heating requirements. There are many types of hot water boilers and central heating boilers with the most common boilers being known as combination boilers, open vent boilers or system boilers. The different system types are detailed below, and are all condensing boilers (condenser efficient boilers), meaning their efficiency is always no less than 90%.

These are an ingenious space-saving idea, and an increasingly popular choice in UK homes. They now account for well over half of all new domestic boilers installed in Britain every year. They provide central heating and hot water directly from the boiler, heating water on demand, and they don’t require a hot water cylinder or cold storage tank in the loft. These boilers can be more efficient as there’s minimal hot water wastage, although they are only as good as the cold water mains pressure coming into the property.

When people refer to “open vent boilers” they generally mean a conventional boiler. This type of system comprises of a boiler and separate hot water cylinder, with a separate system pump, separate diverter valve and a back-up immersion heater. There will be two tanks in the loft, one large, one small. With this type of system you will normally find a pump on the shower. These boilers are often chosen when replacing old like-for-like boiler systems in order to minimise disruption.

A system boiler works in a similar way to an open vent boiler with a separate boiler and cylinder, but without the small tank in the loft as the boiler houses an internal sealed expansion vessel. It also incorporates the system heating pump making installation relatively quick and easy. With System boilers there is also the added benefit that the major components will be covered by the boiler guarantee.

If a household requires a separate cylinder then this type of boiler would generally be used, as once flushed and filled with protective chemicals, the system will stay clean and will not suffer from air locks and sludge problems.

We are familiar with all brands of boilers and components found on a central heating system, old or new.

We also specialise in renewable heat technologies from solar thermal to underfloor heating.

Whether you’re interested in exploring ways to utilise greener energy technologies or you’re looking to reduce your energy bills or your energy emissions, we can to find ways of improving energy and cost efficiency in your home or office, we can also advise you with any government funded grants that may be available to you.

Our team of gas engineers are factory trained by Worcester Bosch. As a business we have partnered with Worcester Bosch for the following reasons.


Boilers installed every year.


Customer satisfaction.

  • Bosch are a recognised brand synonymous with high quality, reliability and amazing efficiency

  • It is a fact that we only find that a company lives up to its brand values when there is a problem or issue, Worcester Bosch customer service experience is operated in a similar way to John Lewis Partnership, they are simply put, ‘a pleasure to deal with on any matter’ which is an important factor when deciding which boiler you are going to choose to provide you with heating and hot water for many years to come.

  • We are able to offer you the longest guarantee on any Worcester Bosch Gas boiler

  • If you are looking for a heating company that is fully conversant in the latest technological developments,you need look no further; we will ensure that you benefit from increased efficiency and reliability from any gas or oil central heating system that we install.