About Viessmann
Viessmann is an award-winning German boiler brand renowned for its reliability and innovation. Named the "most reliable" boiler brand by consumer organisation Which?, Viessmann has a strong reputation for quality.
The brand was awarded the Which? Best Buy Award from 2017 to 2020 and has consistently improved the availability of spare parts since its introduction to the UK market.
They utilise best in class engineering combined with leading technology that's been delivering UK leading boilers now for almost a decade.
How much does a Viessmann boiler cost?
For a standalone Vitodens boiler, prices typically range from £1,000 to £2,500, depending on the model and size. These prices do not include Gas Safe installation or any additional labour costs.
With Gas Safe installation, you can expect to pay between £2,200 and £3,500. At Heatable, we can install your Viessmann boiler in as little as 24 hours, ensuring you receive prompt and professional service.
How much can a Viessmann boiler save you?
The amount you can save with a Viessmann boiler depends on the efficiency of your current boiler. By upgrading from an old G-rated boiler to a modern A-rated boiler like the Vitodens 100-W, you could save up to £540 per year on your energy bills.
Why get your Viessmann boiler installed with Heatable?
Upgrading your home with a brand-new Viessmann boiler from Heatable isn't just a significant improvement; it's a decision that comes with numerous benefits. When you choose us for your installation, you're selecting quality assured by our Gas Safe certified installation team.
Additionally, we stand by our workmanship with a comprehensive 24-month installation warranty. Our commitment to excellence extends beyond installation, as we pride ourselves on providing exceptional aftercare and support.
This dedication to quality service is why we became the first boiler industry member to be recognised as a Which? Trusted Trader. It's also the reason behind our thousands of 5-star reviews on the independent review platform, Trustpilot.
How long should a Viessmann boiler last?
Viessmann boilers are designed to have a lifespan of around 10 to 15 years, but with regular servicing and maintenance, they can last even longer, providing you with reliable heating for many years.
How long is a Viessmann boiler warranty?
The Viessmann range comes with either a 10 or 12-year parts and labour warranty, depending on the model.
Which Viessmann boiler do you need?
The right Viessmann boiler for you will depend on your specific heating needs and budget. If you're unsure which size is best for your home, we offer a free tool that can help you determine the most suitable boiler based on your requirements.
Top features include
- 10-12 years warranty
- Market leading gas efficiency
- Stainless steel heat exchangers
Viessmann boiler deals
Replacement boilers,redefined.
All-inclusive boiler installations
New boiler
Installation
Controls¹
Pipework
Flush
Flue
Filter
Recycling
Aftercare
We've been Which? Trusted boiler installers for 3 years running.
2023 • 2024 • 2025
Get a new boiler with up-to 4 years
APR²
APR²Next day boiler installations
If ordered before 3pm
Which? Trusted Traders. The first and only online boiler installation business to become a Which? Trusted Trader.
All-inclusive aftercare. Each and every installation gets our exclusive 12 month workmanship warranty.
5 star reviews. Across Trustpilot, Google and Reviews.io, we've got over 10,000 5 star reviews with an average rating of 4.9.
A safe choice. We're Gas Safe registered for boiler installations, and MCS certified for solar installations.
Boiler FAQ's
We install a whole range of new boilers, from leading UK brands.
Our most popular being Worcester Bosch boilers, which come fully installed with up-to 10 year guarantee protection. Prices start from £2,195 (for a combi boiler installation).
Vaillant closely follows, with boilers like the ecoTEC Plus being our most popular premium offering.
It depends on the type of boiler installation which you're getting.
On a new combi boiler installation, as standard, you'll get the boiler, all required flue accessories, a system flush, new Boiler Plus compliant controls, a magnetic boiler filter and any extras, such as a gas pipe upgrades and/or condensate pipe upgrades.
On a new regular/system boiler installation, as above, you'll get the boiler, flue accessories, flush, a magnetic boiler filter, gas and condense upgrades and we'll reconnect to your existing boiler controls and cylinder.
We also offer upgrades, such as smart thermostats to remotely control your new boiler, improved flushing options and more.
On average installing a new boiler takes between 1 to 2 days to complete.
If you are having your old boiler replaced in the same location and with the same type of boiler the process will be quicker (likely one day) compared to installing a different type of boiler in a new location.
So, to summarise:
Straight forward boiler replacement:
Takes 1 day
A boiler replacement, including a relocation:
Takes 1-2 days
A conversion from a regular to a combi:
Takes 1-2 days
Yes, we can certainly try to.
For our new boiler installations, Heatable works with a panel of lenders when offering boiler finance, so, if for whatever reason you didn't pass with our primary lender, we will pass it over to a secondary who will be able to assist.
Failing that, we have a range of other payment options available such as payment via credit card, Klarna, and more.
First, you'll go through some online questions to ascertain what type of boiler installation you require, and match you to suitable products.
Next, you'll choose a new boiler which suits your budget (prices start from £1,795).
Then, you'll choose whether to spread the cost of your new boiler with finance or pay using your card.
Once you've booked, you'll upload some images of your existing setup to make sure we order the correct materials, and to avoid delays on the day of your installation.
Once installed, we'll register your new boiler's warranty and sort all of the paperwork.
Yes, you can. All of our installations have finance options available.
You can spread the cost over 3, 5, or 10 years at a rate of 9.9% APR. Or, you can spread the cost with 0% APR up-to 4 years on certain packages.
Buy Now Pay Later boiler finance is also available.
The cost of a new boiler depends on a variety of factors, including the type of boiler you select, your location and the complexity of your installation.
But, the typical costs for installing a boiler are:
Combi boiler replacement:
£1,800 - £2,800
Regular boiler replacement:
£2,000 - £2,800
System boiler replacement:
£2,000 - £2,800
Conversion (regular to combi):
£2,600 - £3,500
This largely depends on the efficiency of your current boiler and how much energy you use. For example, you could save as much as £840 per year if you are upgrading from an old G-rated boiler to a modern A-rated boiler (along with a programmer, room thermostat and thermostatic radiator controls (TRV's)).
For more details, check the Energy Savings Trust website.
At the last step of booking your installation, you’ll see a “Discount code” box.
Simply fill it out, submit, and if it is valid it’ll auto apply to your order.
Only 1 code is allowed per order.
We offer 0% options on selected packages, subject to availability.
You can filter the results to show only interest-free options.
Or, you can also spread the cost with Klarna which have a range of interest-free options. It’s available on all packages.