Are you in the market for a new combi boiler and wondering which options are the best? Choosing the right combi boiler is essential for efficient heating, hot water supply, and overall energy savings. In this comprehensive guide, we’ll introduce you to some of the best new combi boilers available on the market today.
Table of Contents
We’ll explore their features, performance, energy efficiency ratings, and user reviews to help you make an informed decision. Whether you prioritize energy efficiency, reliability, or advanced features, our guide will provide you with valuable insights to ensure you find the perfect combi boiler that meets your heating needs and fits your budget. Get ready to discover the top contenders in the world of combi boilers and make a confident choice for your home or business.
What are the best combi boilers to buy?
The best combi boilers to buy are Worcester Bosch, Viessmann, Vaillant, Alpha and Baxi. Know more about these boilers on this page.
Worcester Bosch Combi Boiler Reviews – (Best)
One of the UK’s most well-known and trusted boiler manufacturers, Worcester-Bosch remains a favourite among professional Boiler installers and heating engineers.
Why did Let’s Heat think Worcester-Bosch deserved the number one spot?
- Which? Best Buy Award for 10-years running
- 10-year guarantee
- Availability of parts is second to none
- Excellent customer reviews & aftercare
- High-efficiency A-rated combi boilers
Model: Worcester Bosch Greenstar i Review
The Worcester-Bosch Greenstar i is officially Worcester’s best selling combi boiler range having sold and installed more than 1 million of them in the UK alone.
Suitable for small to medium sized homes on a budget the Greenstar i is the brand’s entry level offering and the range includes the 30i i.e. 30kW and the less powerful Greenstar 25i at 25kW.
Although not the brand’s best offering, it still boasts some great features, not least of which is an A-rating for efficiency, a user-friendly digital display and a reassuring ‘Which?’ Best Buy Award.
Model: Greenstar CDi Compact Boiler Review
The CDi Compact is Worcester Bosch’s compact boiler, designed to be the ideal size to fit into small spaces, such as kitchen cupboards.
Available with multiple power outputs including 28kW, 32kW and 36kW, this combi boiler can still provide heating and hot water for properties with varying demands but offers the dimensions required to save as much space as possible.
Model: Worcester Bosch 2000 Reviews
The Worcester-Bosch 2000 is the brand’s latest entry-level offering and officially the brands quietest ever boiler.
Its compact design makes it suitable for installation within small spaces such as kitchen cupboards and is available within 25kW or 30kW it has enough power for flats and small homes.
Boasting A-rating efficiency, a user-friendly digital display and a reassuring Which? Best Buy Award and a contemporary and stylish case, it’s a superb option for small property dwellers on a budget.
Model: Worcester Bosch 8000 Style Review
The Worcester-Bosch 8000 offers the same contemporary design and feel as it’s a cheaper brother, the 2000 but with cutting edge features and superior power outputs, it is ideal for larger homes with more than one bathroom.
It’s the most powerful and connected wall-hung boiler to date, capable of delivering up to 50kW’s, and with optional smart technology that will top up the boiler for you when low pressure is detected.
Want a quote for a Worcester-Bosch Boiler & Installation?
With us here at Let’s Heat you can get an online quote now to see how much we can install it for: Get Quote Now!
And please remember that whoever you use to install your boiler, please ensure that they are gas safe registered, as we are and that they have a great review score for their workmanship see our 4.9 Trustpilot ratings here!
Read about: Top UK Heat Only Boilers
Viessmann Combi Boiler Reviews – (2nd Best Condensing boilers)
Dominating the European boiler market, Viessmann is a relatively new entrant to the UK market, but thanks to their prestigious German engineering, reliability and superb customer support they have seen huge growth and popularity within a very short period of time.
Major benefits of Viessmann boilers include:
- Technically brilliant boilers e.g. they use stainless steel heat exchangers
- 10-year guarantee
- Excellent customer reviews and aftercare
- High-efficiency A-rated combi boilers
Model: Viessmann Vitodens 050-W Gas Combi Boiler Reviews
The Viessmann 050-W is the brand’s entry-level combi boiler, offering all of the essentials Viessmann are renowned for on a budget, including the Inox-Radial heat exchanger.
Available with multiple size outputs including 29kW and 35kW it is suitable for small and medium-sized properties, while its dimensions make it quite a compact size for a wall-mounted combi boiler.
Model: Viessmann Vitodens 100-W Gas Combi Boiler Review
The Viessmann Vitodens 100-W is the best selling combi boiler from the award-winning brand and has an impeccable reputation.
The boiler is an upgrade on the 050-W featuring superior internal parts and components with fewer plastic parts than the 050-W, as well as the signature stainless steel Inox-Radial heat exchanger.
The updated 2021 model also features a new and improved stylish exterior casing, hydrogen-ready technology and an upgraded backlit LCD touchscreen display.
The latest Vitodens 100 also includes an updated LCD touchscreen display with integrated Wi-fi, allowing you to control, diagnose the boiler and enable remote access to Viessmann support so that they can assist from afar and diagnose faults.
Read about: Worcester Bosch Greenstar 8000 Life Combi Boiler Review
Model: Viessmann Vitodens 111-W Combi Boiler Reviews
If your property has high hot water demands e.g. multiple bathrooms but you don’t have the space or necessary requirements to install a system boiler with a separate hot water storage tank, the 111-W may be the solution.
The Vitodens 111-W is a storage combi – essentially it’s like a usual combi boiler – and has its own internal hot water storage tank, allowing it to deliver a ludicrous 18 litres of hot water per minute.
Want a quote for a Viessman Boiler & Installation?
With us here at Let’s Heat you can get an online quote now to see how much we can install it for: Get Quote Now!
And please remember that whoever you use to install your boiler, please ensure that they are gas safe registered, as we are <> and that they have a great review score for their workmanship see our 4.9 Trustpilot rating here!
Read about: Different Types Of Reliable Boiler Systems
Vaillant Combi Boilers (3rd Best Condensing Boilers)
Made in the UK, Vaillant is another German-owned brand that has earned a reputation for reliability & high-quality engineering.
Among installers, they are credited with being one of the easiest boilers to repair.
Due to their superb reputation, Vaillant is the second-largest manufacturer of boilers in Europe today.
Model: Vaillant EcoTec Pro Review
The EcoTec Pro is one of Vaillant’s most popular combi boilers and previously held the Which? Best Buy Award in 2016.
It has been awarded Quiet Mark certification, only given to the quietest models and as ‘Eco’ name suggests, one of the brands most energy efficient boilers to date.
Ideal for small to medium-sized properties with the kW model’s coming in three different outputs to suit all, including 24kW, 28kW and 30kW along with a 2-year guarantee, with an additional 7 to 10 years available when you book a Vaillant Advance installer.
Model: Vaillant EcoFit Pure Reviews
Similar to the Worcester-Bosch CDi Compact, the EcoFit is Vaillant’s compact offering, helping to save space and is compact enough to fit in a kitchen cupboard.
It’s designed to be flexible, with a rear flue option allowing you more versatility on where to install it.
It’s also equipped with energy-saving capabilities and when you don’t require so much heat, it reduces its maximum output by 20%, helping to save energy and reduce your heating bills.
Want a quote for a Vaillant Boiler & Installation?
With us here at Let’s Heat you can get an online quote now to see how much we can install it for: Get Quote Now!
And please remember that whoever you use to install your boiler, please ensure that they are gas safe registered, as we are and that they have a great review score for their workmanship see our 4.9 Trustpilot ratings here!
Read about: Boiler installation in Cardiff
Alpha Combi Boiler Reviews – (4th Best Condensing Boilers)
The Alpha Boilers are a recent entrant to the UK heating market, but their reputation has quickly risen to become a brand known for reliability & affordability.
Major benefits of Alpha boilers include:
- Technically brilliant boilers e.g. they use stainless steel heat exchangers
- 10-year guarantee
- Excellent customer reviews & aftercare
- High efficiency A-rated Combi boilers
Model: Alpha E-Tec Review
The Alpha E-Tec is Alpha Innovations most popular condensing Combi boiler and although it is considered a budget-friendly brand, it uses a stainless steel heat exchanger, which is usually only seen in premium brands.
The E-Tec is also offered with a very generous 10-year warranty, which is again typically only available with market leading brands, such as Worcester Bosch.
The Alpha E-Tec is ideal for households on a budget who care about securing a Combi boiler built to last.
Read about: Boilers On Finance
Want a quote for an Alpha Boiler & Installation?
With us here at Let’s Heat you can get an online quote now to see how much we can install it for: Get Quote Now!
And please remember that whoever you use to install your boiler, please ensure that they are gas safe registered, as we are and that they have a great review score for their workmanship see our 4.9 trustpilot rating here!
Read more: New Boiler Quote
Baxi Combi Boiler Reviews – (5th Best Condensing Boilers)
Baxi is a British based boiler manufacturer with a lot of history and a reputation for offering excellent customer service and having a well-established nationwide network of Baxi gas installers and training centres.
Even though they are not typically viewed as a premium choice brand, Baxi does have some great condensing boilers on offer, with generous warranties and award-winning customer service.
Major benefits of Baxi boilers include:
- Made in the UK
- Excellent customer reviews and aftercare
- High efficiency A-rated combi boilers
- 7 year no-quibble warranty
Model: Baxi 600 Combi Boiler Review
The Baxi 600 was engineered based on the feedback provided by installers and similar to other smaller models on the market, it’s designed to be installed in small spaces.
The Baxi 600 is available in a good selection of power outputs, ranging from 24kW to 36kW, making it an ideal boiler for small and medium-sized households.
The 600 also benefits from some very innovative features including EasyFill – a spring-loaded single lever, allowing to top up the pressure easier than ever. Baxi boilers are also available with the sense smart room thermostat, allowing you to easily control your heating via an accompanying smartphone app.
Want a quote for a Baxi Boiler & Installation?
With us here at Let’s Heat you can get an online quote now to see how much we can install it for: Get Quote Now!
And please remember that whoever you use to install your boiler, please ensure that they are gas safe registered, as we are and that they have a great review score for their workmanship see our 4.9 Trustpilot rating here!
Read more about:
BOILER REPLACEMENT AND INSTALLATION GUIDE
FAQ’s
What are the best combi boilers to buy?
1- Worcester Bosch
2- Viessmann
3- Vaillant
4- Baxi
5- Alpha
Which boiler brand is the most reliable?
Top 10 best boiler brands
#1 Viessmann Boilers.
#2 Worcester Bosch.
#3 Valliant Boilers.
#4 Baxi Boilers.
#5 Alpha Boilers.
#6 Ideal Boilers.
#7 Glow Worm Boilers.
#8 Potterton Boilers.
How do I choose a new combi boiler?
When choosing a new combi boiler, consider factors such as the size of your property, the number of occupants, hot water demand, and energy efficiency ratings. It’s advisable to consult with a heating professional who can assess your specific requirements and recommend the most suitable combi boiler for your situation.
What is the best size combi boiler?
The best size combi boiler depends on the specific heating and hot water demands of your property. Factors such as the number of bathrooms, showers, and radiators, as well as your hot water usage patterns, should be considered. A heating professional can assess your needs and recommend the appropriate size of combi boiler for optimal performance and efficiency.