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Last updated on December 13th, 2023 at 10:49 am

Wondering about the best combi boiler in the UK for 2023? You’re not alone! We’ll guide you through what to look for, what to sidestep, and why we believe Viessmann is the cream of the crop for your new home combi boiler.

Your boiler might be an overlooked, rarely-thought-of box in the corner of an unused room. It works quietly and diligently, providing warmth to your home, even though you might often ignore it.

Your boiler is committed to keeping your home warm and cozy. A new gas combi boiler is your home’s unsung hero.

We know a bit about cars to make an informed purchase. But how do we know what makes a boiler the best? Is it the brand? Size? Efficiency? Maybe even awards (yes, they do exist for boilers!)?

We’ve hinted that our top pick is Viessmann boilers. But the story doesn’t end there. There are a plethora of boiler options out there, including tough contenders like Worcester Bosch, Vaillant, BAXI, and others.

What Are The Key Feature of A Combi Boiler?

A combi boiler, short for combination boiler, is a compact and highly efficient heating appliance that provides both hot water for taps and central heating for your home. Unlike traditional systems, combi boilers heat water directly from the mains when you need it, eliminating the need for a separate water storage tank or cylinder.

This design not only saves space but also ensures a constant supply of hot water on demand, making them popular for smaller homes. Combi boilers are energy-efficient, as they heat water only when necessary, reducing energy waste and providing convenience in a single unit.

How Did We Pick Our Top List Of Boilers?

To decide which boiler won our 2023 awards we looked at a number of factors:

  1. Warranty duration: This gives us an idea of how long the boiler is expected to serve you.
  2. Brand credibility: Based on what real customers have to say about them.
  3. Trustpilot ratings: We look at what folks are saying over on Trustpilot.
  4. Recognition and awards: Any noteworthy trophies in their cabinet? Particularly, those prestigious Which? Best Buy Awards?
  5. Customer support: How good are they at helping out when you need them the most?
  6. Price brackets: We consider what they’re charging for their boilers.
  7. Efficiency: How well does the boiler perform in terms of energy use and energy efficiency?

Best Combi Boilers of 2023 (Brand Rankings)

Here are our top picks for the finest combi boiler brands in the UK as of 2023. These are the brands that really stand out:

  1. Viessmann Combi Boilers – Top of the pack
  2. Alpha Combi Boilers – Close second
  3. Vaillant Combi Boilers – A reliable choice
  4. Worcester Bosch Combi Boilers – Always dependable
  5. Ideal Combi Boilers – Lives up to its name
  6. BAXI Combi Boilers – Solid option at number six

Viessmann Combi Boiler – Warmable’s Best Boiler

Viessmann, a big name in the European boiler market and a leader in commercial boiler installations, is bringing their top-notch German engineering to the UK’s home boilers. Ready for a worry-free boiler upgrade?

Here’s why we think Viessmann has the best combi boilers:

  • They’ve bagged the Which? Best Buy Award and are named the UK’s “most dependable boiler”.
  • They offer a 10-year warranty.
  • Their boilers boast top-of-the-line German engineering, with no plastic or rubber bits (like some others).
  • They use a unique Inox Radial Stainless Steel Heat exchanger, not the aluminum ones in lesser brands.
  • Their boilers have special Lamda combustion control to get the most efficiency.
  • They’re hydrogen ready – all set for the fuel of the future.
  • They’ve got a great stock of parts, so replacements are easy.
  • Their customer reviews and aftercare are top-notch.

Looking for a new, professionally installed Which? Best Buy boiler? Get in touch with Warmable today!

Choose Warmable For Combi Boiler Installation

When it comes to installing a combi boiler, Warmable is your trusted partner. Our experienced team specialises in seamless and efficient combi boiler installations tailored to your home’s unique needs. We understand the importance of reliable hot water and heating, and that’s why we offer top-notch service.

With Warmable, you can expect expert guidance on selecting the right combi boiler, precise installation that maximises energy efficiency, and a commitment to safety. We take pride in our work, ensuring your home remains warm and comfortable all year round. Make the smart choice – choose Warmable for your combi boiler installation needs.

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Andrew Speer

Andrew Speer is the co-founder of Warmable drawing on more than 15 years of experience working in property and home repairs industry in the UK