Boiler Replacement

Boiler Options

A boiler replacement is a big decision and involves a financial investment in your heating system. Depending on your heating and hot water requirements along with your budget, there are several options to choose from. There’s the conventional gas boilers, oil and LPG boilers.

We’ve listed below the various different options available to you which should assist you in deciding which boiler replacement solution fits your circumstances the best.


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Condensing Boilers

These are perhaps the most popular option for the majority of households. Since 2005 it has been illegal to install a non condensing boiler in UK homes. Unlike older boilers, modern condensing boilers are manufactured to reuse heat from the flue gases. By reusing wasted heat, condensing boilers are around 90% efficient.

In fact, if you install a new condensing boiler you could save up to as much as £305 a year in heating costs, the Energy Saving Trust estimates. Although savings will depend on the efficiency of the boiler you’re replacing.

condensing boilers
Combi Boilers

Did you know that more than half of the boilers sold in the UK are Combi boilers? Combi boilers are very popular due to their space saving design. A central heating boiler and water heater in one, Combi boilers don’t require a water tank or a hot water cylinder and heat water on demand, which is fed straight from the cold water mains supply. Combi boilers deliver instant, unlimited hot water and are a good choice if you take a lot of showers.

Perhaps the biggest disadvantage of a Combi though is the lack of a back up immersion heater. If the boiler breaks down you won’t have any heating or hot water. Also, if you have a large home with several bathrooms, a combi boiler won’t meet your needs.

Pros – Instant unlimited hot water. Great for smaller homes with low hot water demands, there’s no hot water cylinder and no cold water tank.

Cons – If the boiler breaks down you won’t have any hot water or heat then they don’t work well with power showers because they can’t heat hot water quickly enough. It takes ages to run a bath if you have a Combi boiler.

System Boilers

Like Combi boilers, System boilers don’t require a water tank in the loft. Central heating and hot water is provided via a sealed hot water storage cylinder, which you’ll usually find housed in an airing cupboard. System boilers are the perfect solution for households with more than one bathroom and a high water demand. They are also easy to install and service, with most of their components built into the boiler.

Pros – Ideal if your household has a high demand for hot water. The pump is inside the boiler, providing more economical running costs. They can be teamed with a solar thermal system to heat water more efficiently.

Cons – The cylinder must be well insulated to prevent heat loss and energy waste. They take up more room than a Combi and if you want a powerful shower you’ll need to have a booster pump which can be a bit noisy.


Get A Free Estimate

We are more than happy to give advice on which solution is most suitable for your needs, depending on your requirements. Why not ask us to pop around and discuss the various options available to you. Better yet, our advice is free!

Call us on 01722 212050