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What are the top 5 most energy-efficient gas boilers available for installation in the UK?

Top 5 most energy-efficient gas boilers

In today’s environmentally conscious world, finding sustainable and energy-efficient solutions is a top priority for many homeowners. Gas boilers are a popular choice for heating homes, but not all models are created equal. In this blog, we’ll take a closer look at our top 5 gas boilers known for their energy efficiency, reliability, and affordability. We’ll explore the features of each model and provide insights into their performance and maintenance requirements. Whether you’re looking to reduce your carbon footprint or save money on energy bills, these gas boilers are worthy of consideration.

Worcester Bosch Greenstar 8000

Worcester Bosch is one of the most well-known boiler brands in the UK, and their Greenstar 8000 range is a great option when searching for an energy-efficient boiler. Available in both combi and system models, it has an efficiency rating of 94%, making it one of the most energy-efficient boilers on the market. Along with a user-friendly control panel and modern design, it also has integrated wireless connectivity to work with the Bosch EasyControl smart thermostat. The Greenstar 8000 is great for larger homes, powering up to 20 radiators, and comes with a 12-year warranty when installed by a Worcester Bosch accredited installer (which we can offer).

Ideal Logic Max

The Ideal Logic Max is available in both combi and system models and is A-rated with an efficiency rating of 94%. It is designed to be compact and will easily fit in a cupboard, making it perfect for small to medium size homes. The Logic Max comes with a system filter which enhances the longevity of the boiler and a 10-year warranty. Also available as an add-on is the Ideal weather compensation kit, which allows the boiler to measure the outside temperature and adjust the water flow appropriately, making your boiler even more efficient.

Glow Worm Energy

Glow Worm is a highly reputable brand that produces some of the most energy-efficient gas boilers on the market. The Glow Worm Energy also has an efficiency rating of 94% and is available in both combi and system models. The Energy uses an aluminium heat exchanger, which is designed to last longer and reduce your energy bill, along with a modulating Grundfos pump, which lowers running costs by adapting to the heating and hot water demands in your home. It is ‘quiet mark’ approved thanks to its ultra-quiet operation and comes in a variety of wattages to suit different-sized homes. The Glow Worm Energy also comes with a 10 Year warranty for enhanced peace of mind.

Vaillant ecoTEC exclusive with Green iQ

The Vaillant ecoTEC exclusive with Green iQ is a high-performance boiler that combines energy efficiency with advanced technology. With an efficiency rating of up to 94%, it is one of the most efficient boilers available. The Green iQ technology allows the boiler to intelligently adapt to the heating and hot water demands of your home, ensuring optimal performance while reducing energy consumption. This boiler is available in both combi and system models, making it suitable for a wide range of homes. It features a user-friendly control panel and can be integrated with the Vaillant vSMART smart thermostat for even greater control and energy savings. The ecoTEC exclusive also comes with up to a 10-year warranty, providing peace of mind for homeowners.

Viessmann Vitodens 100

The Viessmann Vitodens 100 is a reliable and energy-efficient boiler that is designed to deliver exceptional performance. With an efficiency rating of up to 94%, it can help you save on energy costs while reducing your carbon footprint. Available in both combi and system models, the Vitodens 100 offers versatility for different heating setups. It features a compact design, making it ideal for homes with limited space. The Vitodens 100 is equipped with the Inox-Radial heat exchanger, which provides reliable and efficient heat transfer. It also has a user-friendly control panel and can be paired with the Viessmann Vitotrol smart thermostat. It comes with a 7-year warranty, extendable up to 12 years.

How to choose the right boiler for your home

When choosing a new boiler for your home, as well as energy efficiency, there are a few other things you should take into consideration: Capacity is important as it determines the amount of hot water and heat that your boiler can produce, so you’ll need to think about the size of your home and the demand you will put on the boiler. Also, pay attention to the warranty offered, as warranties can range from 5-12 years depending on the make and model – warranties are often extended when the boiler is installed by brand-accredited engineers such as Prime Time Boilers. Finally, consider the boiler’s connectivity; it is becoming increasingly common for boilers to come with integrated wireless technology allowing your heating to be controlled by a smartphone. If you are considering a smart home, it could be worth choosing an option with this functionality already built in.

For more help on choosing a new boiler, give our customer service team a call on 0800 043 0440 (landline) or 01992 677 676 (mobile), they will be able to advise you on options.


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