gas boiler guide : best high efficiency condensing gas boiler


High efficiency condensing gas boilers are a more efficient option to traditional boilers, but they might not be the best choice for everyone. Here we’ll explain what a high efficiency boiler is, how it works and whether you should consider getting one for your home.

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What is a high efficiency condensing gas boiler?

condensing gas boiler

A high efficiency condensing gas boiler is a type of condensing boiler that has a condensing element. This is a device that converts waste heat into water, so it can be used to produce hot water as well as heat the house. A high efficiency condensing gas boiler needs less fuel to do the same amount of work as other conventional boilers, which means you’ll need fewer deliveries and pay less in bills.

The main difference between an ordinary boiler and this type of model is its ability to recover wasted heat through their “condensate” system—which captures any vapour produced during operation and turns it back into water again for reuse. It’s like having a radiator or dehumidifier at home!

Are condensing gas boilers really more efficient?

You may be wondering if condensing boilers can really be more efficient than standard gas boilers. The answer is yes, but only if they’re used in the right way.

Condensing boilers are designed to capture heat that would normally escape up the chimney and use it to warm your home instead – this means you’ll save on your heating bills as well as reducing emissions from your boiler. Condensing boilers also produce less nitrogen dioxide than conventional gas boilers because they don’t give off fumes when there’s no fire burning (which means no need for venting).

In addition to these environmental benefits, condensing boilers often cost less to run than older models due to their improved efficiency and reduced running costs.

What are the disadvantages of a condensing gas boiler?

There are several disadvantages to low-pressure condensing boilers. They’re more expensive than standard boilers, and are not suitable for all homes. These units require a larger installation space than standard gas boilers, which can be an issue if you live in a tight spot or have limited available attic space. In addition, they’re more difficult to install and repair than standard models because of their complex internal designs. Lastly, low-pressure condensing boilers require specialized training to service them properly—they’re not just another type of boiler!

How efficient is a gas condensing boiler?

How efficient is a gas condensing boiler

A high efficiency condensing gas boiler is more efficient than other types of boilers, so you can save money on your fuel bills.

A gas condensing boiler has an energy efficiency rating of up to 92%, making it one of the most energy-efficient options available today. This means that 92% of the energy supplied to the appliance is converted into usable heat, rather than wasted as heat loss in other areas such as flues and ventilation systems. Compare this with standard non-condensing boilers which typically have an efficiency rating between 78% and 82%.

For comparison purposes, a gas combi boiler has an efficiency rating between 85% and 89%, while a regular gas boiler can reach anywhere from 75% to 85%.

How long do high efficiency boilers last?

The lifespan of a boiler depends on how well it is maintained, looked after and used. If you run your boiler all dcay every day, it will last longer than if you only use it occasionally. The same goes for the type of boiler: if it’s an older model which hasn’t been serviced regularly, then it will be more likely to break down sooner rather than later.

This is especially true when we’re talking about condensing boilers as these are relatively new technology so there’s not much history behind them yet!

Is a combi boiler cheaper to run than a condensing boiler?

combi boiler vs condensing boiler

A high efficiency condensing gas boiler is more expensive to buy than a normal boiler, but the running costs are much lower. This makes them more cost effective in the long term and the payback period is typically 8-12 years.

This means that if you’re on a budget, or just don’t have the money to fork out for both at once, then you may be better off buying separate boilers rather than installing one unit that does everything (combination).

What is the best gas condensing combi boiler?

best gas condensing combi boiler

The best gas condensing combi boilers are those that are most efficient and have the highest hot water output. They can be used for a wide range of applications, from domestic to commercial, but many people choose them for their superior efficiency and low running costs.

If you’re looking for an efficient gas boiler then we recommend the Gas Fired Integrated condensing Boiler. This boiler is extremely energy-efficient due to its 92% AFUE rating, which means that it will use less energy than most other condensing boilers on the market today. It’s also very quiet, with just 48dB noise level at 15m when in operation – much quieter than many other small space heaters or electric radiators!

What type of boiler is cheapest to run?

Boiler type

The following is a list of the types of boilers that are likely to be cheapest to run:

  • high efficiency condensing gas boiler – these are the most efficient and most expensive type. The gas and water vapour produced during combustion is collected, condensed and returned to the boiler. This means they’re extremely energy efficient and incredibly environmentally friendly, as they produce far less CO2 than other types of boiler. However, they cost a lot more up-front than other types of boiler too (you can expect to pay £5-£10k for one).
  • Gas combi boilers – these are like normal domestic boilers except they have an additional fuel input that allows them to switch between being fired by natural gas or LPG (liquefied petroleum gas). They tend not to be as efficient as condensing models but still operate at lower temperatures than regular boilers so can be cheaper to run overall.

are high efficiency condensing gas boilers worth it

As the name suggests, high efficiency condensing gas boilers are more efficient than standard gas boilers. The higher efficiency means that you will use less gas to heat your home and therefore pay less money to heat it. However, because they are more efficient and use less fuel, they also cost slightly more than standard boilers.

High efficiency condensing boilers are also more reliable than their standard equivalents. This is because the condensing element of the boiler removes moisture from the exhaust gases released by a central heating system which can otherwise cause corrosion and damage parts of a central heating system over time leading them to breakdown prematurely.

cast iron boiler vs high efficiency

High efficiency boilers are more efficient, but they can be more expensive to buy and run. High efficiency boilers have been around for a while, but their popularity is growing as more people become aware of the issues with cast iron boilers.

High efficiency condensing gas boilers are one example of this type of boiler. They’re made up of components that are designed to remove heat from the exhaust gases before they leave the appliance, which means less energy is wasted through radiation into unused areas and reduced concentrations of CO2 emissions into our atmosphere. The result? A boiler with an overall lower fuel consumption and carbon footprint!


In conclusion, high efficiency condensing gas boilers are an excellent option for anyone seeking a more efficient heating system. They are not only cheaper to run but also easier to maintain and repair as well. You should consider these factors when choosing which type of boiler is best for your home or business because it has been proven that they save money over time by being more efficient than traditional models.

If you are still not sure which type of boiler is best for your home, then we recommend that you contact us. We will be able to advise you on which type of boiler is best for your needs and provide information on its cost. WhatsApp: +86 188-3890-8339