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Written by Bernard Morgan (Engineer). Published: May 22, 2018. Updated: May 14, 2026

Ideal vs Viessmann Boilers

Ideal and Viessmann boilers are two established manufacturers offering a wide range of models to the UK market. As an independent boiler installation company, we have looked at the current boiler ranges from the two manufacturers.

In this guide, we compare these ranges based on the following criteria: product range, quality of components, customer service, accolades and market share.

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Viessmann vs Ideal – A Guide >

About Ideal Heating

Ideal Heating was founded as the National Radiator Company in 1906 in Kingston upon Hull. The company is now well known and is today part of the French HVAC company Groupe Atlantic.

Ideal is noted for producing one of the first British boilers, the Ideal Cookanheat. A boiler that was revolutionary in combining an open fire, central heating boiler, cooking oven and hot cupboard all in one unit. The company also pioneered moving boilers from basements to kitchens.

From the 1920s onwards, Ideal led the way in introducing central heating into lower-priced homes in the UK. Its Autocrat, Elite, and Concord ranges throughout the decades were very popular. In more recent years, Ideal Heating has been noted for its Classic and Logic boiler ranges.

All of the boilers Ideal offers to the UK market are manufactured at its Hull site, where they have been since the company’s inception in 1906.

Ideal Heating has been the recipient of many recent awards. These include Good Housekeeping Reader Recommended products in 2019, 2020 and 2021. And Energy Saving Trust Endorsed Products.

About Viessmann

Headquartered in Allendorf, Germany, Viessmann was founded in 1917. It’s now a fourth-generation family company.

Viessmann entered the UK market in 1989 and has its UK head office in Telford, Shropshire. From this office, the company offers a comprehensive product range. This includes gas boilers, oil boilers, air and ground source heat pumps, steam boilers, and biomass boilers.

Viessmann also operates in 72 countries across the world. In the UK, Viessmann trains approximately 2,500 installers, contractors and architects on its products each year.

All of the boilers Viessmann offer for sale to the UK market are manufactured and assembled at Viessmann’s manufacturing facility. This is in its Allendorf headquarters.

Viessmann’s Vitodens range was awarded Which? Best Buy for three years in a row. Viessmann has also been the recipient of global awards, including the following:

Red Dot Award: Product Design
Trophée des Usines
iF product design award
Number 1 Trade Partner
Good Practice Energy Efficiency

Ideal vs Viessmann boiler review

Ideal boiler range 2024

Ideal’s boiler range in 2024 comprises combi boilers, system boilers and heat-only boilers. Below, we have looked at a few specifications of each boiler in the current range.

Logic Max Boiler

Efficiency: 91%
LPG Conversion: Select models.
Warranty: 10 years
Combi: 24kW, 30kW, 35kW
Combi Hot Water Flow Rate: 9.9, 12.4 and 14.5 litres/minute
System: 15kw, 18kW, 24kW and 30kW
Regular: 12kW, 15kW, 18kW, 24kW and 30kW
Prices (boiler only – average prices from plumbers merchants in mid-January 2024)
- Combi available from £1,289
- System available from £ 1,291
- Regular available from £1,262

Vogue Max

Efficiency: 91%
LPG Conversion: Select models.
Warranty: 12 years
Combi: 26kW, 32kW, 40kW
Combi Hot Water Flow Rate: 10.6, 13.1 and 16.4 litres/minute
System: 15kw, 18kW, 26kW and 32kW
Prices (boiler only – average prices from plumbers merchants in mid-January 2024)
- Combi available from £1,638
- System available from £ 1,332

Vogue Gen2

Efficiency: 91%
LPG Conversion: Select models.
Warranty: 10 years
Combi: 26kW, 32kW, 40kW
Combi Hot Water Flow Rate: 10.6, 13.1 and 16.4 litres/minute
System: 15kw, 18kW, 26kW and 32kW
Prices (boiler only – average prices from plumbers merchants in mid-January 2024)
- Combi available from £1,477
- System available from £ 1,266

Logic+ Boiler

Efficiency: 91%
LPG Conversion: Select models.
Warranty: 7 years
Combi: 24kW, 30kW, 35kW
Combi Hot Water Flow Rate: 9.9, 12.4 and 14.5 litres/minute
System: 15kw, 18kW, 24kW and 30kW
Regular: 12kW, 15kW, 18kW, 24kW and 30kW
Prices (boiler only – average prices from plumbers merchants in mid-January 2024)
- Combi available from £1,145
- System available from £ 1,305
- Regular available from £1,203

See Ideal Logic+ Boiler full review.

Mexico HE Boiler

Efficiency: 91%
Warranty: 7 years
Regular: 15kW and 18kW
Prices (boiler only – average prices from plumbers merchants in mid-January 2024)
- Regular available from £1,351

Viessmann boiler range 2024

Viessmann’s boiler range in 2024 also comprises combi, system and heat-only boilers. Below, we have looked at a few specifications of each boiler in the current range.

Vitodens 050-W

Efficiency: 91%
LPG Conversion: Yes
Warranty: 10 years
Combi: 25kW, 30kW, 35kW
Combi Hot Water Flow Rate: 10.2, 12.2 and 14.3 litres/minute
System: 19kw, 25kW and 32kW
Prices (boiler only – average prices from plumbers merchants in mid-January 2024)
- Combi available from £1,059
- System available from £ 1,049

Vitodens 100-W

Efficiency: 94%
LPG Conversion: Yes
Warranty: 12 years
Combi: 26kW, 30kW, 35kW
Combi Hot Water Flow Rate: 13.3, 15.6 and 17 litres/minute
System: 11kw, 19kW, 25kW and 32kW
Regular: 11kW, 16kW, 19kW, 25kW and 32kW
Prices (boiler only – average prices from plumbers merchants in mid-January 2024)
- Combi available from £1,425
- System available from £ 1,237
- Regular available from £1, 208

Vitodens 111-W

Efficiency: 98%
LPG Conversion: Yes
Warranty: 10 years
Storage Combi: 25kW and 32kW
Hot Water Flow Rate: 20.1 and 21.2 litres/minute
Prices (boiler only – average prices from plumbers merchants in mid-January 2024)
- Storage Combi available from £1,983

Vitodens 200-W

Efficiency: 98%
LPG Conversion: Yes
Warranty: 10 years
Combi: 30kW and 35kW
Combi Hot Water Flow Rate: 15.7 and 17 litres/minute
System: 11kw, 19kW, 25kW and 32kW
Prices (boiler only – average prices from plumbers merchants in mid-January 2024)
- Combi available from £1,983
- System available from £ 1,694

Comparison of two similar boilers

To get more granular in our comparison of the Ideal vs Viessmann boilers, we have undertaken a side-by-side comparison. The boilers we are comparing here are the Ideal Vogue Max Combi 32kW and the Viessmann Vitodens 100-W 30kW.

Ideal Vogue Max Combi 32kW

Price (installed): From £3,449 (inc. VAT)

Specs & Features

Suitable for homes with up to 15 radiators, one bathroom and en-suite
Utilises brass components
Easy-to-read pressure gauge
Compatible with Ideal smart controls
Compatible with Ideal’s weather compensation kit
3.5in full colour large backlit LCD display with plain text and graphics
Frost protection
Energy Saving Trust Endorsed Product
13.1 litres/minute hot water flow rate
91% efficient / A rated

The Vogue Max Combi is a premium boiler from Ideal. If you are familiar with older boilers from Ideal, you will see that they have had a significant overhaul in their boiler designs.

Beyond the aesthetics of their boilers, Ideal has also invested heavily in technology to increase the efficiency of the range. This investment has paid off, with the Vogue Max Combi becoming an Energy Saving Trust-endorsed product.

This 32kW boiler offers a great hot water flow rate of 13.1 litres a minute when tested at 35℃. This makes it a good boiler for larger family homes such as a 3-bedroom semi-detached home with one bathroom, en-suite and up to 15 radiators.

This boiler uses brass components, which are more durable than plastic alternatives. This is why this is a premium boiler. The main premium component utilised in this boiler is the heat exchanger. Unlike other boilers in the Ideal range, the Vogue Max Combi is fitted with a stainless steel exchanger. This is an improvement as stainless steel outperforms aluminium. Aluminium heat exchangers are prone to corrosion, which, over time, has a massive impact on the efficiency of a boiler.

To increase the efficiency of this boiler, it is compatible with Ideal’s weather compensation kit. This addition to the system allows the boiler to measure the temperature outside and adjust accordingly.

The warranty on the Vogue Max Combi is excellent, coming with a 10-year warranty as standard, extendable to 12 years. However, to extend this warranty, the boiler installation is subject to certain specific terms and conditions.

Read the full Ideal Vogue Max review here >

Viessmann Vitodens 100-W 30kW

Price (installed): From £3,206 (inc. VAT)

Viessmann Vitodens 100-W Features

Suitable for homes with up to 15 radiators, one bathroom and en-suite
Ideal for installing in living areas due to an operating volume of just 35dB
Combined PRV (Pressure Release Valve) and condensate connection
Built-in Shock Arrestors for quiet operation, and to avoid water hammer problems
User-friendly control via backlit LCD touchscreen
Compatible with smart thermostats
Straightforward access from the front, so no need to leave space at the side for maintenance
Very easy to site and install for the engineer
Awarded Which? Best Buy status from 2017 to 2020
15.6 litres a minute hot water flow rate
94% efficient / A rated
12-year warranty

The Viessmann Vitodens 100-W has surged in popularity since first being awarded Which? Best Buy status in 2017.

Like the Vogue Max Combi, the Viessmann Vitodens 100-W is available in multiple power outputs: 26kW, 30kW, and 35kW. Viessmann does not offer a 32kW output on the Vitodens 100-W so we are looking at the 30kW, the nearest comparable product.

This boiler version offers a great hot water flow rate of 15.6 litres a minute when tested at 35℃. So a little more than the Vogue Max. This boiler is suitable for similar properties to the Vogue Max Combi 32kW — homes such as a 3-bedroom semi-detached home with one bathroom, en-suite and up to 15 radiators.

With a 94% efficiency rating, this boiler is one of the highest-efficiency condensing gas boilers available. Although a small difference to the Vogue Max, this will add up over time. It’s a saving of £3 in every £100 spent. And this is without using efficiency-boosting technology such as smart thermostats.

Both of these boilers are equipped with stainless steel heat exchangers. Viessmann is renowned for the quality of their heat exchangers. They are constructed from Inox – the highest grade of stainless steel available. This greatly contributes to the efficiency of the Vitodens 100-W and ensures safe operation and long service life. Unsurprisingly, Viessmann offers a 10-year guarantee against leaks resulting from corrosion on the heat exchanger.

We expect you to be able to enjoy trouble-free winters for the next decade at the very minimum if choosing the Vitodens 100-W.

The Vitodens 100-W comes with a 12-year warranty when installed by a Viessmann-trained installer.

To find out our more detailed thoughts on this boiler, see our Viessmann Vitodens 100-W combi boiler review.

After-Sales Service

With Ideal having a UK headquarters and a long history, its expected that they have better customer service than Viessmann. However, in our experience, this is not the case.

Viessmann are a larger company and are based in Europe, but they have invested heavily in the UK. They have a dedicated UK headquarters and distribution centre. This is where all the customer service operations are based.

Viessmann used to have issues with the availability of parts for its boilers in the UK. However, this is something that the company has worked hard to remedy.

Viessmann parts are now stocked all over the UK. They are at every Plumbase location and their network of engineers are based across the UK. This means if your boiler runs into any problems, parts are readily available and a Viessmann engineer can be at your doorstep within 24 – 48 hours.

We have never encountered any issues with the availability of parts for current Ideal boilers. These are also available at all Plumbase locations and other merchants.

But whilst the availability of parts is good, we have come across several complaints of poor customer service from Ideal.

Our Verdict

So, Ideal vs Viessmann boilers, who wins?

Both Ideal Heating and Viessmann offer excellent boilers. Ideal has a larger range of models that stretch to mid-tier or budget up to premium. This means they may have more options available to more people.

But when choosing one brand over another, we would choose Viessmann. This comes down to several factors, these are:

Efficiency
Viessmann offers much greater levels of efficiency across models in its 2024 boiler range. The 200-W, which is more expensive than the 100-W is 98% efficient.
Quality of components
This is close. Ideal has invested in the quality of components in several of its boilers such as the Vogue Max. But, these high-quality components aren’t found across their range. In contrast, all Viessmann boilers feature the same high-quality brass components and stainless steel heat exchangers.
All components manufactured by Viessmann
All of the components in Viessmann boilers are produced by Viessmann. All in the same manufacturing facility in Allendorf, Germany. Ideal utilises parts from third-party suppliers in many of its boilers. This means they are not engineered to work together as well as the Viessmann components.
Investment in innovation
Over the past few years, Viessmann has invested in innovation. This shows with the futureproof technologies available in the current boiler range. This includes integration with renewable energy, weather compensation and integration with smart thermostats.
Engineered for ease of servicing
Viessmann’s investment has seen excellent improvements in the configuration of its boilers. This makes them easier to service than Ideal boilers. Whilst this only affects the engineer, as soon as the boiler is out of warranty, it will result in higher labour costs.

Ideal vs Viessmann Boilers

More information:

About Ideal Heating

About Viessmann