Vaillant Boilers

Combination boilers are great but they’re not the correct solution for every household. Let’s consider the pros and cons of installing one in your home.

As condensing boilers, combis are cheap to run and good for the environment – check for yourself the high efficiency rating of every Vaillant boiler on this page. You will almost certainly save money on your utility bills.

Because there’s only one unit to fit (unlike with system and heat only boilers), combi boiler installation is quick and straightforward. You also have a lot of flexibility as a homeowner on where in your property you can install your boiler.

And combis deliver hot water on demand. No need to wait for a tank to fill up and get warm.

However, the fact that combis draw mains water is a disadvantage. The amount of water delivered to different points in your home is governed by local mains water pressure. What this means is that, if you and another family member want to use more than one tap at the same time, both taps will often suffer from a drop in pressure and temperature.

So, combis are generally only suitable for smaller properties with one bathroom and average hot water requirements. If you have more than one bathroom, a system boiler or regular boiler might actually be the better option.

Combi boilers source the water they heat up directly from the mains and distribute it around your property. With a regular boiler (sometimes referred to open vent boilers or heat only boilers), there’s a lot more involved – a hot water cylinder, a cold water tank (normally stored in the attic), and a variety of pumps and valves to distribute hot water to where it’s needed.

Regular boilers are suitable for larger homes with multiple bathrooms where there are regular spikes in demand for hot water. A combi boiler struggles to deliver hot water to two or more locations at once because the supply of water is constrained by mains pressure, central heating output levels, and flow rates.

Please click to see our range of Vaillant heat only boilers.

The price you see listed to each new Vaillant combi boiler is an indicative average price. You can actually consider them to be accurate average fitting costs.

Why do we put them on our site? We believe in sharing as much information with our potential customers as possible. We all have household budgets we have to work to and we think it’s right that, when you visit a site like ours, we should share with you the boilers that are within your financial target.

The prices shown next to each boiler are accurate estimates for the supply and installation of Vaillant boiler packs where there are no complications during the fitting. That’s true for 95% of our fits and, in those cases, the prices customers actually pay are within 5% either way of the indicative price shown on our website.

Where a fit is complicated, you should think of our indicative price as a base price. That’s because there will be extra labour and material charges. Situations where this may arise include if we:

• have to repair or remove pipes,
• replace one type of boiler (system boiler, for example) with another type of boiler (combi), or
• install your new boiler in a different location from the location of your existing boiler.

We talk with our customers every day about boilers. They tell us what they want from their boilers – the factors they consider to be most important. Since we began trading back in 2013, we’ve had tens of thousands of conversations with homeowners and the idea behind the PlumbProud percentage rating was based upon those conversations.

For us, client satisfaction before, during, and after installation is the most important benchmark for how we’re performing as a business. We thought a great way to start was to create an algorithm based upon what you told us was most important about what a boiler should have and then rank each boiler individually using their specifications.

So, what should you read into the scores? A boiler scoring 100% ticks every single box our customers want but no boiler has ever got there yet. The boilers whose scores are really close to 100% are those boilers which our customers, based upon what they told us, would consider as approaching “the perfect boiler”.

The entire current Ideal combi boiler and heating system range achieve the highest efficiency rating as determined by ERP and SEDBUK.

Not only will this reduce your carbon footprint but it will result in lower heating bills for your home.

Standard Vaillant warranties last between two and seven years. An extended warranty of 10 years is available on many of their current range of boilers – please ask our heating engineer for more information when we come to quote you.

Please note that you’ll need to have your boiler serviced every year as well as register its installation within thirty days for the warranty to remain operational.

Yes. We’re delighted to be able to offer customers a wide range of payment options including vendor finance, interest free loans, and more. Please ask our engineer for more information when they visit you to quote you.