6 Best Condensing Boilers Of 2024: Your Guide To Energy Efficiency & Savings

As many households are trying to become more energy efficient and reduce their energy bills, it makes sense to install a condensing boiler.

For a start, these new-age systems play a crucial role in the UK government’s national energy strategies. In line with the 2005 Boiler Plus regulations, they help reduce greenhouse gas emissions, enhance energy security, and lower energy consumption. 

The best condensing boiler currently on the market is the Worcester Bosch Greenstar 4000 gas condensing boiler. It is highly efficient with modern features and a great warranty.

This article will look at the 6 best condensing boilers available in the UK and explore their many benefits.

The Top 6 Condensing Boilers Of 2024

These are the top-selling and best condensing boilers currently available on the UK market:

Overview

The Worcester Bosch Greenstar 4000 is one of the top-selling condensing boilers in the UK, and our top pick for the best condensing boiler.

This gas boiler is ideal for small-to-medium homes with a single bathroom. Thanks to its design, it works well in low water-pressure areas. It is highly efficient and comes with a Quick Tap function which helps you to save water.

It can also connect wirelessly with the Bosch EasyControl, making temperature management a breeze.

Overview

The Vitodens 050-W is a wall-mounted gas boiler that is perfect for smaller homes or apartments. It has an LED display and touch buttons, making it easy to use. 

What we really like about this boiler is how quietly it runs. This, coupled with its compact size makes it perfect for installation in living spaces. 

It is compatible with Viessman boiler smartphone apps through its wireless capabilities, making home heating control easier than ever before. 

Overview

This gas-fired, wall-mounted boiler is made of high-quality stainless steel. The Viessmann Vitodens 100-W is ideal for homes or apartments with limited space.

Considering the quality of the boiler and its warranty, it is an affordable option. It can be integrated with smart technology so you can optimise your heating while reducing your energy bills. 

Thanks to its compact size and silent operation it can be installed inside the bathroom or another living space without causing disruption to your routine – it will simply (and silently) do its job. 

Overview

Easy to install and available in 24kW, 30kW and 36kW, the Baxi 800 runs on natural gas and LPG. This low-cost boiler features a heated condensate trap to prevent frozen condensate pipes in winter.

It’s compatible with Baxi uSense, the brand’s smart control that can be paired with your Baxi app. This allows you to operate your heating no matter where you are. 

We also really like the EasyFill function, which allows you to top up your boiler to restore pressure without having to call a heating engineer. 

The reason it is fourth on our list is its lower efficiency, however, its other features make it a strong contender.

Overview

This ErP A-rated condensing boiler features stainless steel heat exchangers and premium high-quality components.

It can be wall-hung in almost any room thanks to its silent operation and compact design. 

The ecoTEC plus gas boiler can withstand fluctuating gas quality thanks to its IoniDetect function. This means it will continue to operate optimally, even when gas quality drops. 

It can connect with the sensoCOMFORT system control, allowing homeowners or tenants to take charge of their home’s temperature. This control system will also ensure that the boiler is always running efficiently, which can save you money on your electricity bill. 

It has a lower efficiency rating than other boilers on our list, but its affordable price has earned it fifth place.

Overview

Featuring a unique stainless steel heat exchanger, this condensing combi boiler has a combined condensate and pressure relief valve connection. It also features a zinc-plated expansion vessel to prevent corrosion.

It’s been approved by Good Homes, so you can rest easy knowing it’s a quality boiler. 

This boiler is very easy to use thanks to the large LCD screen and touch button controls, allowing you to set your heating preferences at the push of a button.

Alpha boilers are premium quality at affordable prices, and the E-TEC Plus NX is no exception. 

How We Chose the Best Condensing Boilers

Here’s a quick breakdown of the factors we considered when selecting the 6 top condensing boilers.

 

How to Choose the Right Condensing Boiler for Your Needs 

Choosing the right condensing boiler for your home will depend on several factors:

• Home size and heating requirements: Consider how many bathrooms and faucets you have, as well as the number of radiators. This will greatly influence which boiler you select as you’ll have to consider the boiler output.
  A well-insulated home will require less heating than an older, draughty home. 
• Boiler efficiency rating: You want a boiler with a high ErP rating as the more efficient a boiler is, the lower your energy bills will be since less heat is being lost. 
• Budget: You should not only consider the cost of the boiler, but also the installation costs, maintenance costs, and how an efficient boiler can help you save in the long run. 
• Features: Are you looking for a user-friendly boiler that you can simply install and start enjoying hot water, or are you looking for something compatible with smart home devices like a smart thermostat? The features you want in a boiler will determine which is right for you. 

Costs of Condensing Boilers

As is evident from our list of the top 6 condensing boilers above, they can cost from £1,050 to £2,500.

Several factors affect the cost of condensing boilers, including:

• Brand and model: Top-tier condensing boiler brands with advanced features cost more than “regular” boilers.
• Boiler output: Boilers with higher output and capable of heating large spaces come with a higher price tag.
• Installation: Labour costs and additional materials and add-ons will increase the final price of these systems.

Condensing boilers tend to be more expensive than traditional boilers when initially purchased.

However, homeowners see a significant return on their initial investment after installing these energy-efficient heating options. Some studies show that, on average, homeowners recoup their initial investment over three or five years in the form of cost savings.

Financing options

UK homeowners have access to several financing options to make installing a condensing boiler more affordable, including:

• Government grants and incentives. Homeowners can take advantage of the UK government’s Boiler Upgrade Scheme to fund the installation of a new condensing boiler. The Warmer Homes Scotland initiative also provides funding to replace old, energy-hungry radiators.
• Green energy loans. Some UK banks and lenders offer preferential loan rates for energy-saving home improvements.
• Boiler scrappage schemes. These schemes provide homeowners with funding to install environmentally friendly heating devices.

FAQs

What are the disadvantages of condensing boilers?

• Higher upfront costs. Generally, the initial purchase prices of condensing boilers are higher than other types of boilers.
• More complex installation. Condensing boiler installations can be more complicated and require additional wiring, plumbing, and labour.
• Higher maintenance requirements. Condensing boilers require more regular maintenance.

Why are condensing boilers considered the safer option?

A non-condensing boiler is designed to take air from within the room, which can cause loose objects to potentially be sucked into it. On the other hand, modern condensing boilers get their air directly from the outside, reducing this risk. Additionally, condensing boilers are designed to remove all their wastewater via condensation water pipes, reducing the risk of exposure to harmful vapours.

Conclusion

Many UK households have started installing condensing boilers for their home heating needs.

These boilers, available in regular, combi, or system boilers, capture the heat of their exhaust flue gases to supply households with warm water and central heating. These energy-friendly boilers boast energy efficiency of 90% or above. Helping UK households use less energy, these boilers also help the environment and reduce monthly energy bills.

Consider your household heating needs and budget to choose the condensing boiler that best fits your heating system requirements. Contact Eco Happy for a free, no-obligation quote on a condensing boiler installation and start reaping the benefits today.